E. A. Kolesnik, V. Ripenko, S. Dzyadukh, E. Lipatov
Using optical spectroscopy in the spectral range from 200 to 300 nm, the absorption edge and transmission spectra of 7 samples of synthetic diamond of IIa type in the temperature range from 12 K to 470 K was studied. Using numerical methods, the temperature dependences of optical absorption into the free exciton state were obtained for negative and positive phonon branches.
{"title":"Temperature dependence of the absorption edge of synthetic diamond","authors":"E. A. Kolesnik, V. Ripenko, S. Dzyadukh, E. Lipatov","doi":"10.1117/12.2616516","DOIUrl":"https://doi.org/10.1117/12.2616516","url":null,"abstract":"Using optical spectroscopy in the spectral range from 200 to 300 nm, the absorption edge and transmission spectra of 7 samples of synthetic diamond of IIa type in the temperature range from 12 K to 470 K was studied. Using numerical methods, the temperature dependences of optical absorption into the free exciton state were obtained for negative and positive phonon branches.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116085577","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}
The influence of the structure of phosphonic acid esters on the stability of their terbium complexes was studied. It was shown that one complex particle was formed irrespective the nature of the side ester chain, and the metal-ligand stoichiometry of the complex was 1:1. The stability constants of the terbium complexes were determined. An increase in the size of the bulky substituent leads to an increase in the stability of the complexes.
{"title":"Study of the complexation reaction between substituted [2,2'-bipyridine]-6,6'-diyl(phosphonates) and terbium ions","authors":"Tsagana B. Sumyanova, N. Borisova, A. Kirsanova","doi":"10.1117/12.2613666","DOIUrl":"https://doi.org/10.1117/12.2613666","url":null,"abstract":"The influence of the structure of phosphonic acid esters on the stability of their terbium complexes was studied. It was shown that one complex particle was formed irrespective the nature of the side ester chain, and the metal-ligand stoichiometry of the complex was 1:1. The stability constants of the terbium complexes were determined. An increase in the size of the bulky substituent leads to an increase in the stability of the complexes.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122369978","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}
The heating dynamics a micron-sized two-layer capsules simulating transport microcontainers with water-containing load and light-absorbing composite shell exposed to a near-IR laser pulse (wavelength 800 nm) is theoretically studied. Both single microcapsules and the microassemblies of particles with various spatial shapes and different packing densities are considered. Using FDTD and FEM calculations, the numerical simulations of the optical field distribution inside and near the microcapsules are carried out, and the temporal dynamics of the temperature profiles of microparticles shells is obtained. Based on the simulation results, one can conclude that the particle morphology introduces specificity in the spatial profile of the optical field and the distribution of light absorption regions. Variation in the geometric shape of a capsule leads to dramatic changes in the distribution of absorbed light energy and, accordingly, particle temperature field. In order to increase the efficiency of absorption of optical radiation in capsule volume and to obtain the maximum heating of absorbing shells, the capsules of cubic, cylindrical and partly rectangular shapes are preferable. Thus, having a 100-fs laser pulse with energy of only 20 μJ it becomes possible to heat a cylindrical microcapsule to the temperature of thermal destruction of its polymeric shell (~ 410 K). Worthwhile notice, the water-filling of a capsule core remains cold. At the same conditions, the ellipsoid-shaped capsule is heated to multiple lower temperatures (~ 340 K).
{"title":"Numerical simulation of the optical radiation absorption by dielectric microcapsules of different spatial shapes","authors":"Y. Geints, E. K. Panina","doi":"10.1117/12.2601285","DOIUrl":"https://doi.org/10.1117/12.2601285","url":null,"abstract":"The heating dynamics a micron-sized two-layer capsules simulating transport microcontainers with water-containing load and light-absorbing composite shell exposed to a near-IR laser pulse (wavelength 800 nm) is theoretically studied. Both single microcapsules and the microassemblies of particles with various spatial shapes and different packing densities are considered. Using FDTD and FEM calculations, the numerical simulations of the optical field distribution inside and near the microcapsules are carried out, and the temporal dynamics of the temperature profiles of microparticles shells is obtained. Based on the simulation results, one can conclude that the particle morphology introduces specificity in the spatial profile of the optical field and the distribution of light absorption regions. Variation in the geometric shape of a capsule leads to dramatic changes in the distribution of absorbed light energy and, accordingly, particle temperature field. In order to increase the efficiency of absorption of optical radiation in capsule volume and to obtain the maximum heating of absorbing shells, the capsules of cubic, cylindrical and partly rectangular shapes are preferable. Thus, having a 100-fs laser pulse with energy of only 20 μJ it becomes possible to heat a cylindrical microcapsule to the temperature of thermal destruction of its polymeric shell (~ 410 K). Worthwhile notice, the water-filling of a capsule core remains cold. At the same conditions, the ellipsoid-shaped capsule is heated to multiple lower temperatures (~ 340 K).","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646918","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}
I. Egorov, A. Klimkin, A. Poloskov, D. Pomazkin, M. Serebrennikov, M. Trigub
A possibility of monitoring of the operating mode of the plasma emitter of electrons of a pulsed accelerator (300 keV, 0.5 μs) is considered on the basis of the analysis of the visible radiation spectrum in the region of the accelerating gap. The spectrum was recorded using the optical system of a complex diagnostic device for controlling the parameters of the vacuum diode of the accelerator and spectrometer, the optical probe of which is mounted opposite the accelerating gap and is protected from the direct action of an electron beam. Characteristic visible spectra were recorded in the region of the accelerating gap for cathodes made of common structural materials (copper, graphite, and stainless steel), which makes it possible to distinguish between the electron beam generation mode and vacuum gap short-circuiting mode.
{"title":"Comparison of visible spectra of the accelerating gap of a pulsed electron accelerator in a vacuum diode with cathodes made of different materials","authors":"I. Egorov, A. Klimkin, A. Poloskov, D. Pomazkin, M. Serebrennikov, M. Trigub","doi":"10.1117/12.2616673","DOIUrl":"https://doi.org/10.1117/12.2616673","url":null,"abstract":"A possibility of monitoring of the operating mode of the plasma emitter of electrons of a pulsed accelerator (300 keV, 0.5 μs) is considered on the basis of the analysis of the visible radiation spectrum in the region of the accelerating gap. The spectrum was recorded using the optical system of a complex diagnostic device for controlling the parameters of the vacuum diode of the accelerator and spectrometer, the optical probe of which is mounted opposite the accelerating gap and is protected from the direct action of an electron beam. Characteristic visible spectra were recorded in the region of the accelerating gap for cathodes made of common structural materials (copper, graphite, and stainless steel), which makes it possible to distinguish between the electron beam generation mode and vacuum gap short-circuiting mode.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131956699","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}
Multiple filamentation in air of high-power ultrashort laser radiation with transverse intensity profile resembling a “corona-beam” (CB) composed by incoherent combining of several annularly distributed independent top-hat sub-beams is theoretically considered. Through the numerical solution of time-averaged nonlinear Schrodinger equation, we study the spatio-angular dynamics of synthesized near infrared CB along the optical path by varying the number and peak power of the beamlets. The evident advances in the multiple-filamentation region manipulating of synthesized CB are demonstrated. Particularly, by adjusting the number and aperture of the constituting sub-beams it makes possible to significantly delay the filamentation onset distance and increase the filamentation length in air.
{"title":"Femtosecond filamentation dynamics of synthesized coronary profile laser beam in air: numerical simulations","authors":"Y. Geints, A. Zemlyanov","doi":"10.1117/12.2601461","DOIUrl":"https://doi.org/10.1117/12.2601461","url":null,"abstract":"Multiple filamentation in air of high-power ultrashort laser radiation with transverse intensity profile resembling a “corona-beam” (CB) composed by incoherent combining of several annularly distributed independent top-hat sub-beams is theoretically considered. Through the numerical solution of time-averaged nonlinear Schrodinger equation, we study the spatio-angular dynamics of synthesized near infrared CB along the optical path by varying the number and peak power of the beamlets. The evident advances in the multiple-filamentation region manipulating of synthesized CB are demonstrated. Particularly, by adjusting the number and aperture of the constituting sub-beams it makes possible to significantly delay the filamentation onset distance and increase the filamentation length in air.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121832414","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. Shikhovtsev, A. Kiselev, D. Kolobov, P. Kovadlo, I. Russkih, E. Kopylov
One of the approach to calculate the characteristics of the air refractive index fluctuations along line of sight for multiconjugated adaptive optics is based on the triangulating the wavefront distortions or/and scintillation amplitudes analysis. The description of the experiments aimed to measurements of the wavefront distortions and scintillation fluctuations is given. The scheme for recovering the optical distortions (wavefront) at the different heights is discussed. The results of changes of the wavefront distortions measured by Shack-Hartmann sensor in the spaced regions of images are discussed. The results obtained may be used for estimation of the real amplitudes of the wavefront distortions in crossed optical beams at the different heights using such method as SDimm+[ 5].
{"title":"The calculation of the characteristics of the air refractive index fluctuations along line of sight for multiconjugated adaptive optics","authors":"A. Shikhovtsev, A. Kiselev, D. Kolobov, P. Kovadlo, I. Russkih, E. Kopylov","doi":"10.1117/12.2554697","DOIUrl":"https://doi.org/10.1117/12.2554697","url":null,"abstract":"One of the approach to calculate the characteristics of the air refractive index fluctuations along line of sight for multiconjugated adaptive optics is based on the triangulating the wavefront distortions or/and scintillation amplitudes analysis. The description of the experiments aimed to measurements of the wavefront distortions and scintillation fluctuations is given. The scheme for recovering the optical distortions (wavefront) at the different heights is discussed. The results of changes of the wavefront distortions measured by Shack-Hartmann sensor in the spaced regions of images are discussed. The results obtained may be used for estimation of the real amplitudes of the wavefront distortions in crossed optical beams at the different heights using such method as SDimm+[ 5].","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126997613","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}
Quang Manh Do, B. Kozlov, T. N. Mai, A. Y. Payurov, A. Yastrebkov
There are described some constructions and generation characteristics of small–sized sealed–off metal–ceramic CO2-lasers working at super atmospheric pressures with active discharge volumes V1 =18×0.8×0.8 cm3 and V2 =7×0.8×0.8 cm3 and resonator length 20÷46 cm. The main goal of this work was determination of main interrelations between gas discharge parameters, parameters of optical resonator and laser energy per pulse and laser pulse duration. There are achieved radiation pulses with a maximum energy per pulse up to 50÷150 mJ and with minimal durations 5÷8 nanoseconds at pulse repetition rates up to 20 Hz.
{"title":"Super-atmospheric pressure CO2 lasers with duration of radiation pulses less than 10 nanoseconds and pulse repetition rates up to 20 Hz","authors":"Quang Manh Do, B. Kozlov, T. N. Mai, A. Y. Payurov, A. Yastrebkov","doi":"10.1117/12.2550678","DOIUrl":"https://doi.org/10.1117/12.2550678","url":null,"abstract":"There are described some constructions and generation characteristics of small–sized sealed–off metal–ceramic CO2-lasers working at super atmospheric pressures with active discharge volumes V1 =18×0.8×0.8 cm3 and V2 =7×0.8×0.8 cm3 and resonator length 20÷46 cm. The main goal of this work was determination of main interrelations between gas discharge parameters, parameters of optical resonator and laser energy per pulse and laser pulse duration. There are achieved radiation pulses with a maximum energy per pulse up to 50÷150 mJ and with minimal durations 5÷8 nanoseconds at pulse repetition rates up to 20 Hz.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116071158","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. Khomyakov, P. Pinaev, Aleksandr Smirnov, P. Statsenko, G. N. Grachev
This paper presents the results of experimental research concerning the laser-plasma coating of steel substrate with the following powder grades: AP-FeCr4MnSiB (Fe71.75C4.81Cr3.33Si3.54B14.10Mn1.74V0.73), AP-FeCr11Mn4SiB (Fe66.8Mn2.84C2.85Si5.3B11.42Cr10.79), AP-FeNi19Mn10SiB (Fe56.12Ni15.82C1.65Si4.92B12.82Mn8.66) and AP-G14 (Fe29.4Ni32.24C5.32Cr14.78Si4.06B10.22Mo2.8W1.16). As a focusing head was used self-made lateral nozzle for feeding powder. The nozzle was used in conjunction with scanning the laser radiation in the direction perpendicular to the movement of the focusing head. Coated tracks with various nozzle head movement speed (7-20 mm/s) was obtained. The elemental compositions of the resulting coatings were studied. Alloying elements are uniform distributed throughout the coating. During surfacing the powder particles are completely melted and partially mixed with the base material. This leads to increased iron content in the resulting coatings compared with the original powder. The hardness and thickness of the deposited layers were measured depending on the speed of the process. The hardness of the coatings is in the range of 7-12 GPa, the thickness is 0.15-0.7 mm. The wear resistance of the resulting coatings is up to 10 times higher than that of a steel substrate.
{"title":"Obtaining of micro-powder coatings from Fe-Ni and Fe-Cr alloys by pulse-periodic laser action","authors":"M. Khomyakov, P. Pinaev, Aleksandr Smirnov, P. Statsenko, G. N. Grachev","doi":"10.1117/12.2550426","DOIUrl":"https://doi.org/10.1117/12.2550426","url":null,"abstract":"This paper presents the results of experimental research concerning the laser-plasma coating of steel substrate with the following powder grades: AP-FeCr4MnSiB (Fe71.75C4.81Cr3.33Si3.54B14.10Mn1.74V0.73), AP-FeCr11Mn4SiB (Fe66.8Mn2.84C2.85Si5.3B11.42Cr10.79), AP-FeNi19Mn10SiB (Fe56.12Ni15.82C1.65Si4.92B12.82Mn8.66) and AP-G14 (Fe29.4Ni32.24C5.32Cr14.78Si4.06B10.22Mo2.8W1.16). As a focusing head was used self-made lateral nozzle for feeding powder. The nozzle was used in conjunction with scanning the laser radiation in the direction perpendicular to the movement of the focusing head. Coated tracks with various nozzle head movement speed (7-20 mm/s) was obtained. The elemental compositions of the resulting coatings were studied. Alloying elements are uniform distributed throughout the coating. During surfacing the powder particles are completely melted and partially mixed with the base material. This leads to increased iron content in the resulting coatings compared with the original powder. The hardness and thickness of the deposited layers were measured depending on the speed of the process. The hardness of the coatings is in the range of 7-12 GPa, the thickness is 0.15-0.7 mm. The wear resistance of the resulting coatings is up to 10 times higher than that of a steel substrate.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116135372","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}
The contribution of the indirect mechanism to the inactivation of microorganisms by long wavelength VUV radiation (λ>170 nm) was investigated in this work. For these purposes dry spores of microscopic fungi Rhodotorula colostri and Saccharomyces cerevisiae were irradiated by Xe excilamp (λ= 173 nm).To determine the contribution of indirect action to the microfungi inactivation, the survival probabilities of the samples grown on a nutrient medium containing antioxidant (I2) and without it were carried out. The results have shown, that the survival probabilities of the spores containing antioxidant increases by no less than 20-25% compared to control ones. The increase value depends on VUV irradiation dose and microorganism type. It should be emphasized, that due to the masking of microfungi survival by I2 bactericidal action, the obtained survival probability increase values should be considered as a lower estimate. Electrophoresis of microfungi DNA have shown, that VUV irradiation of spores containing antioxidants leads to less DNA destruction and heaver DNA fragments appearance. The latter may indicate a decrease of reactive oxygen species effect on DNA in the presence of antioxidants. Atomic force microscopy and IR spectroscopy haven’t shown influence of antioxidant on cell wall destruction. This can indicate, that in contrast to wet spores, in the case of VUV irradiation of dry ones, the indirect mechanism of cell wall destruction is absent or weakly expressed.
{"title":"Indirect action of VUV radiation on micro-organisms","authors":"G. Zvereva, I. Y. Kirtsidely, E. Machs, E. Letova","doi":"10.1117/12.2548657","DOIUrl":"https://doi.org/10.1117/12.2548657","url":null,"abstract":"The contribution of the indirect mechanism to the inactivation of microorganisms by long wavelength VUV radiation (λ>170 nm) was investigated in this work. For these purposes dry spores of microscopic fungi Rhodotorula colostri and Saccharomyces cerevisiae were irradiated by Xe excilamp (λ= 173 nm).To determine the contribution of indirect action to the microfungi inactivation, the survival probabilities of the samples grown on a nutrient medium containing antioxidant (I2) and without it were carried out. The results have shown, that the survival probabilities of the spores containing antioxidant increases by no less than 20-25% compared to control ones. The increase value depends on VUV irradiation dose and microorganism type. It should be emphasized, that due to the masking of microfungi survival by I2 bactericidal action, the obtained survival probability increase values should be considered as a lower estimate. Electrophoresis of microfungi DNA have shown, that VUV irradiation of spores containing antioxidants leads to less DNA destruction and heaver DNA fragments appearance. The latter may indicate a decrease of reactive oxygen species effect on DNA in the presence of antioxidants. Atomic force microscopy and IR spectroscopy haven’t shown influence of antioxidant on cell wall destruction. This can indicate, that in contrast to wet spores, in the case of VUV irradiation of dry ones, the indirect mechanism of cell wall destruction is absent or weakly expressed.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122795092","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. Ionin, I. Kinyaevskiy, Y. Klimachev, A. Kotkov, A. Kozlov, A. Kurnosov, D. Mokrousova, D. Sinitsyn
Analysis of experimental data obtained in study of cryogenic CO laser with glow discharge and cryogenic slab CO laser with RF discharge showed that oxygen concentration in laser mixture is much less than in initial gas mixture. With low oxygen content, ozone plays role of supplier of electrons in cryogenic discharge. Since ionization potential of ozone is somewhat higher than that of oxygen, and ozone quickly condenses on cold walls of cryogenic discharge, conversion of O2 to O3 is accelerated. In addition, in plasma-chemical reactions, ozone regenerates carbon monoxide after dissociation. Acceleration of ozone generation in cryogenic barrier discharge was experimentally demonstrated.
{"title":"Role of ozone in cryogenic plasma of carbon monoxide laser","authors":"A. Ionin, I. Kinyaevskiy, Y. Klimachev, A. Kotkov, A. Kozlov, A. Kurnosov, D. Mokrousova, D. Sinitsyn","doi":"10.1117/12.2543514","DOIUrl":"https://doi.org/10.1117/12.2543514","url":null,"abstract":"Analysis of experimental data obtained in study of cryogenic CO laser with glow discharge and cryogenic slab CO laser with RF discharge showed that oxygen concentration in laser mixture is much less than in initial gas mixture. With low oxygen content, ozone plays role of supplier of electrons in cryogenic discharge. Since ionization potential of ozone is somewhat higher than that of oxygen, and ozone quickly condenses on cold walls of cryogenic discharge, conversion of O2 to O3 is accelerated. In addition, in plasma-chemical reactions, ozone regenerates carbon monoxide after dissociation. Acceleration of ozone generation in cryogenic barrier discharge was experimentally demonstrated.","PeriodicalId":205170,"journal":{"name":"Atomic and Molecular Pulsed Lasers","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122464724","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：