Pub Date : 2020-09-01DOI: 10.1142/s0218301320300088
J. Gupta, J. Hamilton
The Kr isotopes lying in between the lighter isotopes of (Zn, Ge and Se) and the heavier isotopes of (Sr and Zr) in the [Formula: see text]–80 region exhibit very interesting spectral features. The spectra of [Formula: see text]Kr isotopes display a striking contrast from those of Zn, Ge and Se isotopes. The role of spherical and oblate and prolate deformed subshell gaps at specific [Formula: see text] and [Formula: see text] and the resulting re-inforcement are strikingly evident in these contrasting features, with variation in [Formula: see text] or [Formula: see text]. The evolution of the spectral features in Kr isotopes with [Formula: see text] as reflected in the quadrupole deformation, [Formula: see text]-band structures, [Formula: see text]0 decay, [Formula: see text]2) values, [Formula: see text]-softness of the nuclear core and odd–even staggering in [Formula: see text]-bands is studied to explore the role of the under lying nuclear interactions. The correlations with odd–[Formula: see text] isotopes are explored. The shape co-existence displayed in some Kr isotopes is studied. The large deformation observed in the ground bands of [Formula: see text]Kr, as exhibited in the [Formula: see text]2) values, is especially interesting.
{"title":"Shape phase changes with N in 72−84Kr isotopes","authors":"J. Gupta, J. Hamilton","doi":"10.1142/s0218301320300088","DOIUrl":"https://doi.org/10.1142/s0218301320300088","url":null,"abstract":"The Kr isotopes lying in between the lighter isotopes of (Zn, Ge and Se) and the heavier isotopes of (Sr and Zr) in the [Formula: see text]–80 region exhibit very interesting spectral features. The spectra of [Formula: see text]Kr isotopes display a striking contrast from those of Zn, Ge and Se isotopes. The role of spherical and oblate and prolate deformed subshell gaps at specific [Formula: see text] and [Formula: see text] and the resulting re-inforcement are strikingly evident in these contrasting features, with variation in [Formula: see text] or [Formula: see text]. The evolution of the spectral features in Kr isotopes with [Formula: see text] as reflected in the quadrupole deformation, [Formula: see text]-band structures, [Formula: see text]0 decay, [Formula: see text]2) values, [Formula: see text]-softness of the nuclear core and odd–even staggering in [Formula: see text]-bands is studied to explore the role of the under lying nuclear interactions. The correlations with odd–[Formula: see text] isotopes are explored. The shape co-existence displayed in some Kr isotopes is studied. The large deformation observed in the ground bands of [Formula: see text]Kr, as exhibited in the [Formula: see text]2) values, is especially interesting.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"21 1","pages":"2030008"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84040184","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}
Pub Date : 2020-09-01DOI: 10.1142/S0218301320500779
S. Kumar, Moirangthem Kiran Singh, R. Jain, Vb Singh
In the present analysis, we have focused on the emission characteristics of the projectile and target fragments produced from the interaction of [Formula: see text]Kr with nuclear emulsion at 1 A GeV. We have studied the variation of the fragmentation parameter for singly charged [Formula: see text], doubly charged [Formula: see text], lower multiple-charged [Formula: see text]–[Formula: see text], medium multiple-charged [Formula: see text]–[Formula: see text] and higher multiple-charged [Formula: see text], projectile fragments with respect to mass of the projectile and found that they are showing the different behaviors for different projectile fragments. We have also studied the emission behavior of shower particles, with respect to the black and gray particles. The present studies show that the production of shower particles strongly depends on the incident kinetic energy of the projectile and also depending on the interaction of the different types of target nuclei of nuclear emulsion.
{"title":"Characteristics of the projectile and target fragments produced in 84Kr36 — emulsion interaction at 1GeV per nucleon","authors":"S. Kumar, Moirangthem Kiran Singh, R. Jain, Vb Singh","doi":"10.1142/S0218301320500779","DOIUrl":"https://doi.org/10.1142/S0218301320500779","url":null,"abstract":"In the present analysis, we have focused on the emission characteristics of the projectile and target fragments produced from the interaction of [Formula: see text]Kr with nuclear emulsion at 1 A GeV. We have studied the variation of the fragmentation parameter for singly charged [Formula: see text], doubly charged [Formula: see text], lower multiple-charged [Formula: see text]–[Formula: see text], medium multiple-charged [Formula: see text]–[Formula: see text] and higher multiple-charged [Formula: see text], projectile fragments with respect to mass of the projectile and found that they are showing the different behaviors for different projectile fragments. We have also studied the emission behavior of shower particles, with respect to the black and gray particles. The present studies show that the production of shower particles strongly depends on the incident kinetic energy of the projectile and also depending on the interaction of the different types of target nuclei of nuclear emulsion.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"21 1","pages":"2050077"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82716128","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}
Pub Date : 2020-09-01DOI: 10.1142/s0218301320500755
A. Ibraheem, M. Farid, E. A. El-Rahman, Z. Mahmoud, S. R. Mokhtar
In this work, the elastic scattering of 6Li+[Formula: see text]Si system at wide range energies from 76 to 318[Formula: see text]MeV is analyzed. The analysis is carried out in the framework of the optical model (OM). Two different methods are adopted for nuclear optical potential of this system. The first method is the double folding cluster (DFC) for the real part supplied with an imaginary part in the Woods–Saxon (WS) form. In the second one, the double folding (DF) model based upon São Paulo potential (SPP) is used as real and imaginary parts each multiplied by a corresponding normalization factor. For [Formula: see text]Si, the full [Formula: see text]-cluster density is considered while the [Formula: see text]-deuteron ([Formula: see text]–[Formula: see text]) structure is considered for 6Li. Therefore, the DFC real central part is calculated by folding both [Formula: see text]–[Formula: see text] and [Formula: see text]–[Formula: see text] effective interaction between target and nuclei over the cluster densities of the target and projectile. The derived renormalized potentials give a successful description of the data. The present results are in good agreement with the previous work. This agreement confirms the validity of the present methods to generate nucleus–nucleus optical potentials.
{"title":"Different folding models for 6Li+28Si elastic scattering","authors":"A. Ibraheem, M. Farid, E. A. El-Rahman, Z. Mahmoud, S. R. Mokhtar","doi":"10.1142/s0218301320500755","DOIUrl":"https://doi.org/10.1142/s0218301320500755","url":null,"abstract":"In this work, the elastic scattering of 6Li+[Formula: see text]Si system at wide range energies from 76 to 318[Formula: see text]MeV is analyzed. The analysis is carried out in the framework of the optical model (OM). Two different methods are adopted for nuclear optical potential of this system. The first method is the double folding cluster (DFC) for the real part supplied with an imaginary part in the Woods–Saxon (WS) form. In the second one, the double folding (DF) model based upon São Paulo potential (SPP) is used as real and imaginary parts each multiplied by a corresponding normalization factor. For [Formula: see text]Si, the full [Formula: see text]-cluster density is considered while the [Formula: see text]-deuteron ([Formula: see text]–[Formula: see text]) structure is considered for 6Li. Therefore, the DFC real central part is calculated by folding both [Formula: see text]–[Formula: see text] and [Formula: see text]–[Formula: see text] effective interaction between target and nuclei over the cluster densities of the target and projectile. The derived renormalized potentials give a successful description of the data. The present results are in good agreement with the previous work. This agreement confirms the validity of the present methods to generate nucleus–nucleus optical potentials.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"1 1","pages":"2050075"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88671024","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}
Pub Date : 2020-09-01DOI: 10.1142/s0218301320500718
Saniya Monga, H. Kaur, S. Jain
We demonstrate that pairing phase transition (superfluid to normal) can be described quite generally in terms of the thermodynamical properties after verifying the obtained level densities with the available experimental data for [Formula: see text]- isotopes. Periodic-orbit theory conveniently connects the oscillatory part of level density to the underlying classical periodic orbits and hence, leads to the shell effects in the single-particle level density. Such methods incorporated with pairing effects can be used effectively to study the phase transitions in [Formula: see text]-isotopes. In addition to this, an interplay between pairing correlations and the shell effects has been understood by analyzing the results obtained for the critical temperatures and shell structure energies for [Formula: see text] isotopes. A relation between variation in critical temperatures caused by shell effects and the shell structure energies determined with and without pairing effects has been established. Furthermore, the systematics of the heat capacity (giving a clear signature of pairing phase transition) as function of temperature for these nuclei are investigated as well.
{"title":"Analysis of pairing phase transition in Sn-isotopes within semiclassical approach","authors":"Saniya Monga, H. Kaur, S. Jain","doi":"10.1142/s0218301320500718","DOIUrl":"https://doi.org/10.1142/s0218301320500718","url":null,"abstract":"We demonstrate that pairing phase transition (superfluid to normal) can be described quite generally in terms of the thermodynamical properties after verifying the obtained level densities with the available experimental data for [Formula: see text]- isotopes. Periodic-orbit theory conveniently connects the oscillatory part of level density to the underlying classical periodic orbits and hence, leads to the shell effects in the single-particle level density. Such methods incorporated with pairing effects can be used effectively to study the phase transitions in [Formula: see text]-isotopes. In addition to this, an interplay between pairing correlations and the shell effects has been understood by analyzing the results obtained for the critical temperatures and shell structure energies for [Formula: see text] isotopes. A relation between variation in critical temperatures caused by shell effects and the shell structure energies determined with and without pairing effects has been established. Furthermore, the systematics of the heat capacity (giving a clear signature of pairing phase transition) as function of temperature for these nuclei are investigated as well.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"36 1","pages":"2050071"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75512717","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}
Pub Date : 2020-08-28DOI: 10.1142/s0218301320500536
F. koyuncu, A. Soylu
The alpha decay (AD) chains of the nuclei having Z = 118, 119 and 120 have been investigated in terms of different theoretical models. Decay mode results that are presented in this study have been ...
用不同的理论模型研究了Z = 118,119和120的α衰变链。本研究中提出的衰减模式结果已经…
{"title":"The alpha-decay chains and decay mode predictions of the nuclei Z = 118, 119 and 120","authors":"F. koyuncu, A. Soylu","doi":"10.1142/s0218301320500536","DOIUrl":"https://doi.org/10.1142/s0218301320500536","url":null,"abstract":"The alpha decay (AD) chains of the nuclei having Z = 118, 119 and 120 have been investigated in terms of different theoretical models. Decay mode results that are presented in this study have been ...","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"1 1","pages":"2050053"},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77691364","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}
Pub Date : 2020-08-18DOI: 10.1142/s0218301320500494
R. Khan
Different event generators are used to simulate proton–proton collisions at the center-of-mass energy s = 7 TeV to predict the forward neutron energy spectra. The predictions from different models ...
{"title":"Forward neutron energy spectra at s = 7TeV","authors":"R. Khan","doi":"10.1142/s0218301320500494","DOIUrl":"https://doi.org/10.1142/s0218301320500494","url":null,"abstract":"Different event generators are used to simulate proton–proton collisions at the center-of-mass energy s = 7 TeV to predict the forward neutron energy spectra. The predictions from different models ...","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"13 1","pages":"2050049"},"PeriodicalIF":0.0,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84119236","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}
Pub Date : 2020-08-18DOI: 10.1142/s0218301320500457
U. Ghosh, B. Mukherjee, S. Rai
Shell model calculations have been performed in f5/2pg9/2 model space using two different interactions viz. jj44bpn and jun45pn to explore nuclear structure in 63,65,67Ga. Calculated excitation ene...
{"title":"Shell model study of nuclear structure in 63,65,67Ga","authors":"U. Ghosh, B. Mukherjee, S. Rai","doi":"10.1142/s0218301320500457","DOIUrl":"https://doi.org/10.1142/s0218301320500457","url":null,"abstract":"Shell model calculations have been performed in f5/2pg9/2 model space using two different interactions viz. jj44bpn and jun45pn to explore nuclear structure in 63,65,67Ga. Calculated excitation ene...","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"68 1","pages":"2050045"},"PeriodicalIF":0.0,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86073108","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}
Pub Date : 2020-08-18DOI: 10.1142/s0218301320500482
I. Ajeel, Mohammed J. R. Aldhuhaibat, K. S. Jassim
Coulomb C2 + C4 and C4 form factors to the 5/22+, 7/21+, 9/21+, 9/22+ and 11/2+ 1 states in 25Mg nuclei have been studied using shell model calculations. The universal sd-shell interaction A (USDA)...
{"title":"Coulomb form factors of 25Mg nuclei using Bohr–Mottelson collective model with Skyrme interaction potential","authors":"I. Ajeel, Mohammed J. R. Aldhuhaibat, K. S. Jassim","doi":"10.1142/s0218301320500482","DOIUrl":"https://doi.org/10.1142/s0218301320500482","url":null,"abstract":"Coulomb C2 + C4 and C4 form factors to the 5/22+, 7/21+, 9/21+, 9/22+ and 11/2+ 1 states in 25Mg nuclei have been studied using shell model calculations. The universal sd-shell interaction A (USDA)...","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"90 1","pages":"2050048"},"PeriodicalIF":0.0,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74205979","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}
Pub Date : 2020-08-12DOI: 10.1142/s0218301320500433
R. Rahul, B. Nandana, S. Mahadevan
The half-life and the Q-value of alpha decay in several super heavy elements are calculated. The nuclear potential is computed using the double-folding method. Using the S-matrix theory, the alpha ...
计算了几种超重元素α衰变的半衰期和q值。核势是用双折叠法计算的。利用s矩阵理论，
{"title":"Calculation of Q-value and half-life of alpha decay in super heavy elements using S-matrix theory","authors":"R. Rahul, B. Nandana, S. Mahadevan","doi":"10.1142/s0218301320500433","DOIUrl":"https://doi.org/10.1142/s0218301320500433","url":null,"abstract":"The half-life and the Q-value of alpha decay in several super heavy elements are calculated. The nuclear potential is computed using the double-folding method. Using the S-matrix theory, the alpha ...","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"6 1","pages":"2050043"},"PeriodicalIF":0.0,"publicationDate":"2020-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76949900","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}
Pub Date : 2020-08-01DOI: 10.1142/s0218301320500585
K. Olimov, K. Gulamov, A. K. Olimov, Gulmurod U. Khudaiberdyev, R. N. Bekmirzaev, S. L. Lutpullaev, B. Yuldashev, K. Olimov
In this paper, the new experimental data on interactions of neutrons with carbon nuclei at 4.2[Formula: see text]GeV/[Formula: see text] are presented. The comparative analysis of the average multiplicities and kinematical characteristics of the protons and charged pions in [Formula: see text]C and [Formula: see text]C collisions at 4.2[Formula: see text]GeV/[Formula: see text] is made.
{"title":"Comparative analysis of characteristics of protons in n12C and p12C collisions at 4.2GeV/c","authors":"K. Olimov, K. Gulamov, A. K. Olimov, Gulmurod U. Khudaiberdyev, R. N. Bekmirzaev, S. L. Lutpullaev, B. Yuldashev, K. Olimov","doi":"10.1142/s0218301320500585","DOIUrl":"https://doi.org/10.1142/s0218301320500585","url":null,"abstract":"In this paper, the new experimental data on interactions of neutrons with carbon nuclei at 4.2[Formula: see text]GeV/[Formula: see text] are presented. The comparative analysis of the average multiplicities and kinematical characteristics of the protons and charged pions in [Formula: see text]C and [Formula: see text]C collisions at 4.2[Formula: see text]GeV/[Formula: see text] is made.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"118 1","pages":"2050058"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88029914","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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