This paper deals with the development of a vacuum compatible probe for in situ measurement (PRISM) of work function and cesium dynamics on a surface under ion source relevant vacuum conditions. The work function estimation is based on the measurement of the onset of the photoelectric signal after laser irradiation on the caesiated surface of the probe. Moreover, the PRISM is uniquely designed such that it can operate as a surface ionisation probe also for the measurement of cesium flux. In addition, cesium coverage on the same surface can be estimated using infrared imaging.
{"title":"Probe for in situ measurement of work function in correlation with cesium dynamics suitable for ion source applications","authors":"Pranjal Singh, M. Bandyopadhyay","doi":"10.1063/5.0057406","DOIUrl":"https://doi.org/10.1063/5.0057406","url":null,"abstract":"This paper deals with the development of a vacuum compatible probe for in situ measurement (PRISM) of work function and cesium dynamics on a surface under ion source relevant vacuum conditions. The work function estimation is based on the measurement of the onset of the photoelectric signal after laser irradiation on the caesiated surface of the probe. Moreover, the PRISM is uniquely designed such that it can operate as a surface ionisation probe also for the measurement of cesium flux. In addition, cesium coverage on the same surface can be estimated using infrared imaging.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79406201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Kumari, D. Maneiah, A. R. Reddy, M. Baig, G. Vamshi
The main objective of this paper is to perform the CFD analysis in the VCR system which is taken in the combination of Methanol and Diesel in the combustion chamber. Alcohol beverages like methanol are used to reduce the emission of soot. The alcoholic fuels have good combustion and emission characteristics. When the combination of diesel and methanol in the combustion chamber are applied they reduce the time taken for the combustion process. The thermal efficiency provided is high than with only diesel. If the methanol fuel is used the peak pressure value will be improved. The results which are mentioned are checked with the experimental values and they provide us the results. When this type of fuel is used in the bikes they provide mileage and improve the efficiency of the engine.
{"title":"CFD analysis of diesel-methanol blend in 4-stroke variable compression ratio internal combustion engine","authors":"K. Kumari, D. Maneiah, A. R. Reddy, M. Baig, G. Vamshi","doi":"10.1063/5.0058761","DOIUrl":"https://doi.org/10.1063/5.0058761","url":null,"abstract":"The main objective of this paper is to perform the CFD analysis in the VCR system which is taken in the combination of Methanol and Diesel in the combustion chamber. Alcohol beverages like methanol are used to reduce the emission of soot. The alcoholic fuels have good combustion and emission characteristics. When the combination of diesel and methanol in the combustion chamber are applied they reduce the time taken for the combustion process. The thermal efficiency provided is high than with only diesel. If the methanol fuel is used the peak pressure value will be improved. The results which are mentioned are checked with the experimental values and they provide us the results. When this type of fuel is used in the bikes they provide mileage and improve the efficiency of the engine.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80292660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tatsuhiro Tokai, Y. Shimabukuro, Hidenori Takahashi, Keita Bito, M. Wada
The efficiency of negative hydrogen (H−) ion surface production in an ion source should be highly dependent upon the velocity distribution of atomic hydrogen (H0) striking the extraction electrode. A measurement system to observe the change in the H0 velocity distribution functions depending upon the method to excite the plasma has been designed, built and, is having its performance improved. The system equips a rotating blade neutral beam chopper to modulate the intensity of the neutral flux passing through the skimmer that separates the downstream chamber for time-of-flight analysis from the ion source discharge. After about 45 cm free flying vacuum space an electron impact type ionizer converts neutral particles to positive ions. A magnetic deflection type mass separator guides the produced protons and molecular ions to a secondary electron multiplier detector. The system demonstrated the existence of a high-speed component in the H0 time-of-flight (ToF) spectrum when it was tested with an ECR plasma source. Although the temperature change of hydrogen atoms obtained from the ToF spectra and that of hydrogen molecules were unclear, some hint of the particle acceleration due to discharge was observed.
{"title":"Velocity distribution function of hydrogen atoms in ion source discharges","authors":"Tatsuhiro Tokai, Y. Shimabukuro, Hidenori Takahashi, Keita Bito, M. Wada","doi":"10.1063/5.0057452","DOIUrl":"https://doi.org/10.1063/5.0057452","url":null,"abstract":"The efficiency of negative hydrogen (H−) ion surface production in an ion source should be highly dependent upon the velocity distribution of atomic hydrogen (H0) striking the extraction electrode. A measurement system to observe the change in the H0 velocity distribution functions depending upon the method to excite the plasma has been designed, built and, is having its performance improved. The system equips a rotating blade neutral beam chopper to modulate the intensity of the neutral flux passing through the skimmer that separates the downstream chamber for time-of-flight analysis from the ion source discharge. After about 45 cm free flying vacuum space an electron impact type ionizer converts neutral particles to positive ions. A magnetic deflection type mass separator guides the produced protons and molecular ions to a secondary electron multiplier detector. The system demonstrated the existence of a high-speed component in the H0 time-of-flight (ToF) spectrum when it was tested with an ECR plasma source. Although the temperature change of hydrogen atoms obtained from the ToF spectra and that of hydrogen molecules were unclear, some hint of the particle acceleration due to discharge was observed.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86962424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vipin Shukla, Debrup Mukhopadhyay, A. Pandey, M. Bandyopadhyay, V. Pandya
In the present work, a deep-learning model is developed for a permanent magnet-based helicon plasma source. Non-invasive cavity ring-down spectroscopy (CRDS) characterizes the HELEN ion source as a negative hydrogen ion source. This paper discusses different deep learning techniques for modelling the ion source and subsequently predicts the ion source density. Experiments were conducted measuring the plasma density for different ranges of hydrogen gas pressure, magnetic field and RF power. Consequently, experimental data trains the deep learning model. The performance of various deep learning models has been assessed by the root mean squared error and the coefficient of determination values. The deep learning techniques also develop a correlation between the electron temperature and plasma densities. It reasonably mimics the behaviour of the HELEN ion source and can classify the helicon plasma generation at a high RF power range (800-850 W). Also, the influence of other input parameters such as gas pressure and the magnetic field is assessed using the correlation matrix.
{"title":"Prediction of negative hydrogen ion density in permanent magnet-based helicon ion source (HELEN) using deep learning techniques","authors":"Vipin Shukla, Debrup Mukhopadhyay, A. Pandey, M. Bandyopadhyay, V. Pandya","doi":"10.1063/5.0057431","DOIUrl":"https://doi.org/10.1063/5.0057431","url":null,"abstract":"In the present work, a deep-learning model is developed for a permanent magnet-based helicon plasma source. Non-invasive cavity ring-down spectroscopy (CRDS) characterizes the HELEN ion source as a negative hydrogen ion source. This paper discusses different deep learning techniques for modelling the ion source and subsequently predicts the ion source density. Experiments were conducted measuring the plasma density for different ranges of hydrogen gas pressure, magnetic field and RF power. Consequently, experimental data trains the deep learning model. The performance of various deep learning models has been assessed by the root mean squared error and the coefficient of determination values. The deep learning techniques also develop a correlation between the electron temperature and plasma densities. It reasonably mimics the behaviour of the HELEN ion source and can classify the helicon plasma generation at a high RF power range (800-850 W). Also, the influence of other input parameters such as gas pressure and the magnetic field is assessed using the correlation matrix.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73489306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Maneiah, M. Shunmugasundaram, A. P. Kumar, D. Mishra, M. A. Kumar
Metal based aluminum matrix composites now show a crucial part in today’s industry. Aluminum based is used in automobile industries to maximizing the millage by reducing the weight of automobiles. In this investigation, the hybrid aluminum based metal matrix composite is developed by selected by aluminum, copper and nickel as matrix material and boron nitride as reinforcement materials. The abrasive water jet machining is employed to make the hole in developed composite by considering the rate of feed, distance stand of nozzle from material and stream rate of water with abrasive as input machining parameters and material removal rate as output parameters. Taguchi approach based L9 array method is employed to find nine set of machining parameters and optimizing for maximizing material removal rate. Analysis of variance table is employed to check the consequenceof input machining parameters and the surface plot, contour graphis adopted to identify the influence of input machiningvariables on the output. The optimized machining parameters are rate of feed is 20mm/min, distance of stand by nozzle 3mm and the flow rate of abrasive water with 400 gm/min for maximizing the material removal rate.
{"title":"Influence of abrasive water jet machining parameters on material removal rate of hybrid metal matrix composites","authors":"D. Maneiah, M. Shunmugasundaram, A. P. Kumar, D. Mishra, M. A. Kumar","doi":"10.1063/5.0057898","DOIUrl":"https://doi.org/10.1063/5.0057898","url":null,"abstract":"Metal based aluminum matrix composites now show a crucial part in today’s industry. Aluminum based is used in automobile industries to maximizing the millage by reducing the weight of automobiles. In this investigation, the hybrid aluminum based metal matrix composite is developed by selected by aluminum, copper and nickel as matrix material and boron nitride as reinforcement materials. The abrasive water jet machining is employed to make the hole in developed composite by considering the rate of feed, distance stand of nozzle from material and stream rate of water with abrasive as input machining parameters and material removal rate as output parameters. Taguchi approach based L9 array method is employed to find nine set of machining parameters and optimizing for maximizing material removal rate. Analysis of variance table is employed to check the consequenceof input machining parameters and the surface plot, contour graphis adopted to identify the influence of input machiningvariables on the output. The optimized machining parameters are rate of feed is 20mm/min, distance of stand by nozzle 3mm and the flow rate of abrasive water with 400 gm/min for maximizing the material removal rate.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85669001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Committes: Seventh International Symposium on Negative Ions, Beams and Sources","authors":"BelchenkoYuri, FairclothDan, LawrieScott, TarvainenOlli, WadaMotoi","doi":"10.1063/12.0005454","DOIUrl":"https://doi.org/10.1063/12.0005454","url":null,"abstract":"","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80340199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Zelenski, G. Atoian, T. Lehn, D. Raparia, J. Ritter
The AGS-RHIC pre-injector complex includes a high-intensity (magnetron type) H− ion source, an Optically Pumped Polarized Ion Source (OPPIS); 750 keV RFQ and 200 MeV Linac. In this paper we will focus on the recent Linac pre-injector upgrade with three sources: two magnetron sources and OPPIS. We also present the recent magnetron development to higher duty factor and reliability. Both magnetron sources produce 120-130 mA current (maximum 150 mA, 600-1000 us pulse duration, 7 Hz repetition rate). The LEBT improvement resulted in beam intensity increase (after RFQ at 750 keV) to 80 mA (maximum 90 mA). The polarized beam efficiency transport will be also improved due to shorter LEBT line and electrostatic Einzel lenses replacement with the magnetic quadrupole lenses. The experience of the two sources layout operation (one source in operation the second source in standby) might be useful for facilities with the high downtime cost (like high-energy collider LHC or multi-user facilities like SNS).
{"title":"High-intensity polarized and un-polarized sources and injector developments at BNL Linac","authors":"A. Zelenski, G. Atoian, T. Lehn, D. Raparia, J. Ritter","doi":"10.1063/5.0057677","DOIUrl":"https://doi.org/10.1063/5.0057677","url":null,"abstract":"The AGS-RHIC pre-injector complex includes a high-intensity (magnetron type) H− ion source, an Optically Pumped Polarized Ion Source (OPPIS); 750 keV RFQ and 200 MeV Linac. In this paper we will focus on the recent Linac pre-injector upgrade with three sources: two magnetron sources and OPPIS. We also present the recent magnetron development to higher duty factor and reliability. Both magnetron sources produce 120-130 mA current (maximum 150 mA, 600-1000 us pulse duration, 7 Hz repetition rate). The LEBT improvement resulted in beam intensity increase (after RFQ at 750 keV) to 80 mA (maximum 90 mA). The polarized beam efficiency transport will be also improved due to shorter LEBT line and electrostatic Einzel lenses replacement with the magnetic quadrupole lenses. The experience of the two sources layout operation (one source in operation the second source in standby) might be useful for facilities with the high downtime cost (like high-energy collider LHC or multi-user facilities like SNS).","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91468469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Vishnudev, D. Parmar, H. Shishangiya, A. Gahlaut, V. Mahesh, M. Bandyopadhyay, A. Chakraborty
Neutral beam injectors inject multi megawatt neutral beams, several tens of amperes and energies from few 100 kV to MV, into the tokamak for heating and diagnostic purposes. The neutral beams are produced through the route of neutralization of ion beams. The ion beams of machines like ITER shall use large area RF based negative ion sources, for plasma production, coupled to multi-grid (3-7), extractor and accelerator systems. Depending on the energy requirements and the beam optics the gaps between the extractor and accelerator stages can range between a few mm to few tens of mm. The multi-aperture multi-grid extractor accelerator systems also provide the route for the gas being fed in the ion source for the plasma production to escape to the surroundings. As a result, the gas density in the gaps is high and can lead to breakdowns often referred to as Paschen breakdowns. A major source of stored energy could be the inter conductor stray capacitance of the high voltage transmission line. These breakdowns could lead to damage of the grid segments and thereby considerable down time of the injector. One of the possible routes to reduce the stored energy could be to reduce the inter conductor stray capacitance by increasing the distance between the conductor and the outer ground cover. This will result in a transmission line with a complex geometry and direct estimation of inter conductor stray capacitance of such complex geometry is difficult. Hence a technique is proposed to estimate the inter conductor stray capacitance of a complex geometry transmission line. A study has been carried out to estimate the inter conductor stray capacitance for various configurations of the transmission line using the method of stored energy in the COMSOL platform. The estimates for one such configuration have been validated experimentally from measured values of capacitance for a 1 m long prototype element. The results of these studies and the experimental observations shall be presented and discussed.
{"title":"Estimation of inter-conductor stray capacitance for HVDC transmission line of negative neutral beam injector","authors":"M. Vishnudev, D. Parmar, H. Shishangiya, A. Gahlaut, V. Mahesh, M. Bandyopadhyay, A. Chakraborty","doi":"10.1063/5.0057755","DOIUrl":"https://doi.org/10.1063/5.0057755","url":null,"abstract":"Neutral beam injectors inject multi megawatt neutral beams, several tens of amperes and energies from few 100 kV to MV, into the tokamak for heating and diagnostic purposes. The neutral beams are produced through the route of neutralization of ion beams. The ion beams of machines like ITER shall use large area RF based negative ion sources, for plasma production, coupled to multi-grid (3-7), extractor and accelerator systems. Depending on the energy requirements and the beam optics the gaps between the extractor and accelerator stages can range between a few mm to few tens of mm. The multi-aperture multi-grid extractor accelerator systems also provide the route for the gas being fed in the ion source for the plasma production to escape to the surroundings. As a result, the gas density in the gaps is high and can lead to breakdowns often referred to as Paschen breakdowns. A major source of stored energy could be the inter conductor stray capacitance of the high voltage transmission line. These breakdowns could lead to damage of the grid segments and thereby considerable down time of the injector. One of the possible routes to reduce the stored energy could be to reduce the inter conductor stray capacitance by increasing the distance between the conductor and the outer ground cover. This will result in a transmission line with a complex geometry and direct estimation of inter conductor stray capacitance of such complex geometry is difficult. Hence a technique is proposed to estimate the inter conductor stray capacitance of a complex geometry transmission line. A study has been carried out to estimate the inter conductor stray capacitance for various configurations of the transmission line using the method of stored energy in the COMSOL platform. The estimates for one such configuration have been validated experimentally from measured values of capacitance for a 1 m long prototype element. The results of these studies and the experimental observations shall be presented and discussed.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79301923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
One of the oldest problems in computational biology is biological sequences in which similar portion of two DNA sequence is searched. Global alignment is designed for the same and Longest Common Subsequence (LCS), one of the most basic algorithms in the field of computer science, provides the best solution global alignment irrespective of the shape of its input sequences. The Longest common Subsequence problem with a variable number of strings is variable and strictly more than 2 is known as Multiple Longest Common Subsequence problem (MLCS) and it is an NP-hard problem. Dynamic Programming Algorithm can be employed to solve the same within polynomial time provided the number of strings is known. In this work, using python GUI-library tkinter, the GUI has been built with the code of the LCS problem embedded within the GUI application. This would not only help to see how the strings are being matched inside the program but also the way the optimal solution is produced.
{"title":"Graphic user interface based implementation of longest common subsequence problem in DNA sequencing","authors":"Arpan Kumar, Sarbajit Manna","doi":"10.1063/5.0057916","DOIUrl":"https://doi.org/10.1063/5.0057916","url":null,"abstract":"One of the oldest problems in computational biology is biological sequences in which similar portion of two DNA sequence is searched. Global alignment is designed for the same and Longest Common Subsequence (LCS), one of the most basic algorithms in the field of computer science, provides the best solution global alignment irrespective of the shape of its input sequences. The Longest common Subsequence problem with a variable number of strings is variable and strictly more than 2 is known as Multiple Longest Common Subsequence problem (MLCS) and it is an NP-hard problem. Dynamic Programming Algorithm can be employed to solve the same within polynomial time provided the number of strings is known. In this work, using python GUI-library tkinter, the GUI has been built with the code of the LCS problem embedded within the GUI application. This would not only help to see how the strings are being matched inside the program but also the way the optimal solution is produced.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75394577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Suneel Laxmipuram, Somalaxmi Vasa, V. C. Sekhar, P. N. Kumar
Trigonal habituation partitioning beam forming (OFDM) is antiophthalmic factor better-known model for top news pace trackless coefficient. OFDM perhaps collude wedding reception separator crystals at sensational radio transmitter furthermore honoree to create spectacular variety earn and maybe even step up suspenseful frame cut-off date in the week time-variation along with return fact stations, bringing abouts peculiar curriculum numerous move over (MIMO) frame of reference. the aforementioned one insubstantial appoints variant valid ozonosphere research project troubles made MIMO-OFDM pelmet network topology, as well as valid epithelial duct indices as well as eschewing, acuminate thrust back metalworking ways employing virtuoso dinner nuclear reactor objects, space–time systems given that MIMO-OFDM, bungle valvular committal to writing equipment, OFDM premise together with sheaf time table, furthermore alert scheduling probabilities utilised in the interest of per- shaping future also return synchronizing, ductus deferens judgment, also straight-from-the-shoulder under mentioned successful MIMO-OFDM systems. At long last, striking insubstantial remembers blood group piece goods radio receiver slaying consisting of MIMO-OFDM.
{"title":"High performance of broadband MIMO-OFDM wireless communications","authors":"Suneel Laxmipuram, Somalaxmi Vasa, V. C. Sekhar, P. N. Kumar","doi":"10.1063/5.0058227","DOIUrl":"https://doi.org/10.1063/5.0058227","url":null,"abstract":"Trigonal habituation partitioning beam forming (OFDM) is antiophthalmic factor better-known model for top news pace trackless coefficient. OFDM perhaps collude wedding reception separator crystals at sensational radio transmitter furthermore honoree to create spectacular variety earn and maybe even step up suspenseful frame cut-off date in the week time-variation along with return fact stations, bringing abouts peculiar curriculum numerous move over (MIMO) frame of reference. the aforementioned one insubstantial appoints variant valid ozonosphere research project troubles made MIMO-OFDM pelmet network topology, as well as valid epithelial duct indices as well as eschewing, acuminate thrust back metalworking ways employing virtuoso dinner nuclear reactor objects, space–time systems given that MIMO-OFDM, bungle valvular committal to writing equipment, OFDM premise together with sheaf time table, furthermore alert scheduling probabilities utilised in the interest of per- shaping future also return synchronizing, ductus deferens judgment, also straight-from-the-shoulder under mentioned successful MIMO-OFDM systems. At long last, striking insubstantial remembers blood group piece goods radio receiver slaying consisting of MIMO-OFDM.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75513691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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