Pub Date : 2023-04-21DOI: 10.1142/S0218301323500192
Daren Sitchepping Fosso, L. Zamick, C. Fan
We show 2 matrices that have identical eigenvalues but different eigenfunctions. This shows that in obtaining two body nuclear matrix elements empirically, it is not sufficient to consider only energy levels. Other quantities like transitions must also be included.
{"title":"Comparisons of Matrices with Different Elements but Identical Eigenvalues","authors":"Daren Sitchepping Fosso, L. Zamick, C. Fan","doi":"10.1142/S0218301323500192","DOIUrl":"https://doi.org/10.1142/S0218301323500192","url":null,"abstract":"We show 2 matrices that have identical eigenvalues but different eigenfunctions. This shows that in obtaining two body nuclear matrix elements empirically, it is not sufficient to consider only energy levels. Other quantities like transitions must also be included.","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47582169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-21DOI: 10.1142/s0218301323500209
Omar A. Alswaidawi, A. Alzubadi
{"title":"Hamiltonian Sensitivity in Calculating the Electromagnetic Moments and Electroexcitation Form Factor for the sd Nuclei Using Shell-Model with Skyrme-Hartree-Fock","authors":"Omar A. Alswaidawi, A. Alzubadi","doi":"10.1142/s0218301323500209","DOIUrl":"https://doi.org/10.1142/s0218301323500209","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44607266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-20DOI: 10.1142/S0218301323500180
B. Ali, Sweta Singh, A. Chandra, S. Ahmad
Event-by-event (ebe) multiplicity fll and cor amongst the charged particles emitted in the forward-backward symmetric pseudorapidity (et) windows of varying widths and positions are investigated by analyzing the experimental data on $^{197}$Au-AgBr collisions at 11.6A GeV/c. The findings are compared with the predictions of relativistic transport model, urq and independent particle emission (or mixed event) model. It is observed that the fll in ebe mean pseudorapidity values and those reflected from the fll strength measure, (Phi) are relatively higher as compared to those expected from the statistically independent particle emission model. The study of the variance, (sigma_c^2) of a suitably defined forward-backward asymmetry variable (C) as a function of et window width and position indicates the presence of strong short-range correlations, which might arise due to isotropic decay of cluster-like objects either in forward or backward et region. Furthermore, analyses of events having ring and jet substructures, carried out separately, suggest that the major contribution to the observed fll in the data sample are due to ring-like events, while the contributions from the jet events appear to be rather small. The observed difference in the behavior of correlation strengths from the two types of events might be due to the enhanced emission of Cherenkov gluons, giving rise to the ring substructure. The mixed event analysis further confirms that the observed fll are the distinct feature of the data, which disappear after event mixing.
{"title":"Event-by-event multiplicity fluctuations and correlations in ring-like and jet like events in 197Au-AgBr collisions at 11.6A GeV/c","authors":"B. Ali, Sweta Singh, A. Chandra, S. Ahmad","doi":"10.1142/S0218301323500180","DOIUrl":"https://doi.org/10.1142/S0218301323500180","url":null,"abstract":"Event-by-event (ebe) multiplicity fll and cor amongst the charged particles emitted in the forward-backward symmetric pseudorapidity (et) windows of varying widths and positions are investigated by analyzing the experimental data on $^{197}$Au-AgBr collisions at 11.6A GeV/c. The findings are compared with the predictions of relativistic transport model, urq and independent particle emission (or mixed event) model. It is observed that the fll in ebe mean pseudorapidity values and those reflected from the fll strength measure, (Phi) are relatively higher as compared to those expected from the statistically independent particle emission model. The study of the variance, (sigma_c^2) of a suitably defined forward-backward asymmetry variable (C) as a function of et window width and position indicates the presence of strong short-range correlations, which might arise due to isotropic decay of cluster-like objects either in forward or backward et region. Furthermore, analyses of events having ring and jet substructures, carried out separately, suggest that the major contribution to the observed fll in the data sample are due to ring-like events, while the contributions from the jet events appear to be rather small. The observed difference in the behavior of correlation strengths from the two types of events might be due to the enhanced emission of Cherenkov gluons, giving rise to the ring substructure. The mixed event analysis further confirms that the observed fll are the distinct feature of the data, which disappear after event mixing.","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45037434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-07DOI: 10.1142/s0218301323400050
{"title":"Fission within dinuclear system approach","authors":"","doi":"10.1142/s0218301323400050","DOIUrl":"https://doi.org/10.1142/s0218301323400050","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46184859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-07DOI: 10.1142/s0218301323500179
S. A. Seyyedi, A. Razmara, A. Akhond
{"title":"Effect of nuclear incompressibility on the fine structure of odd-odd superheavy nuclei","authors":"S. A. Seyyedi, A. Razmara, A. Akhond","doi":"10.1142/s0218301323500179","DOIUrl":"https://doi.org/10.1142/s0218301323500179","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":"8 28","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41243147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-07DOI: 10.1142/s0218301323500167
B. Park, A. Park, S. Lee, J. Lee, C. Kim
{"title":"Monte Carlo Simulation Study on Simultaneous Detection of Neutrons and Gamma-Rays with a GdI3:Ce Scintillator Detector","authors":"B. Park, A. Park, S. Lee, J. Lee, C. Kim","doi":"10.1142/s0218301323500167","DOIUrl":"https://doi.org/10.1142/s0218301323500167","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44453765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-06DOI: 10.1142/s021830132350009x
In this paper, the energy, and wavefunctions of the low-lying bound and resonance states of [Formula: see text]Ca and [Formula: see text]Ca are studied. For [Formula: see text]Ca we adopted [Formula: see text]Ca two-body cluster model while for [Formula: see text]Ca we adopted [Formula: see text]Ca three-body cluster model. Two models of potentials, namely SH: Hulthén type and WS: Woods–Saxon type potentials, each having a spin-orbit coupling term is chosen for the [Formula: see text]-nucleus pair while three-range Gaussian (TRG) Nijmegen hardcore and softcore potential models are chosen for [Formula: see text] pair. The resulting few-body (two- and three-body) Schrödinger equations are solved numerically to get the bound state energies and wavefunctions. For the three-body calculation, we used hyperspherical coordinates. The formalism of supersymmetric quantum mechanics is applied to construct a one-parameter family of isospectral potential to investigate the resonance states of the [Formula: see text]Ca ([Formula: see text]Ca) core-[Formula: see text] two-body system. To study the effect of replacement of the outer core valence nucleon(s) of [Formula: see text]Ca by [Formula: see text] hyperon(s), two- and three-body cluster model calculations for the bound states of [Formula: see text]Ca and [Formula: see text]Ca are also carried out using the same set of two-body potentials, as used for [Formula: see text]Ca and [Formula: see text]Ca respectively. And a clear enhancement in the one- and two-[Formula: see text] separation energies and a shrinking of the overall size of the nucleus is indicated. The computed results are compared with some of those found in the literature.
{"title":"Low-lying bound and resonance states in Λ61Ca and ΛΛ62Ca","authors":"","doi":"10.1142/s021830132350009x","DOIUrl":"https://doi.org/10.1142/s021830132350009x","url":null,"abstract":"In this paper, the energy, and wavefunctions of the low-lying bound and resonance states of [Formula: see text]Ca and [Formula: see text]Ca are studied. For [Formula: see text]Ca we adopted [Formula: see text]Ca two-body cluster model while for [Formula: see text]Ca we adopted [Formula: see text]Ca three-body cluster model. Two models of potentials, namely SH: Hulthén type and WS: Woods–Saxon type potentials, each having a spin-orbit coupling term is chosen for the [Formula: see text]-nucleus pair while three-range Gaussian (TRG) Nijmegen hardcore and softcore potential models are chosen for [Formula: see text] pair. The resulting few-body (two- and three-body) Schrödinger equations are solved numerically to get the bound state energies and wavefunctions. For the three-body calculation, we used hyperspherical coordinates. The formalism of supersymmetric quantum mechanics is applied to construct a one-parameter family of isospectral potential to investigate the resonance states of the [Formula: see text]Ca ([Formula: see text]Ca) core-[Formula: see text] two-body system. To study the effect of replacement of the outer core valence nucleon(s) of [Formula: see text]Ca by [Formula: see text] hyperon(s), two- and three-body cluster model calculations for the bound states of [Formula: see text]Ca and [Formula: see text]Ca are also carried out using the same set of two-body potentials, as used for [Formula: see text]Ca and [Formula: see text]Ca respectively. And a clear enhancement in the one- and two-[Formula: see text] separation energies and a shrinking of the overall size of the nucleus is indicated. The computed results are compared with some of those found in the literature.","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47022191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-05DOI: 10.1142/s0218301323500155
Shigetaka Hamada, A. Al-Ghamdi, Arafa A. Alholaisi, A. Ibraheem, N. Amangeldi, Y. Abdou
{"title":"Analysis of elastic scattering of 6,7Li and 20Ne from 24Mg nucleus using microscopic potentials","authors":"Shigetaka Hamada, A. Al-Ghamdi, Arafa A. Alholaisi, A. Ibraheem, N. Amangeldi, Y. Abdou","doi":"10.1142/s0218301323500155","DOIUrl":"https://doi.org/10.1142/s0218301323500155","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49222050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-30DOI: 10.1142/s0218301323400037
X. Han, C. Liu, S. Y. Wang
This review presents the nuclei with octupole correlations in the [Formula: see text] mass region. The status of experimental data on the behavior of the energy displacement, the [Formula: see text] transition probability and intrinsic electric dipole moment have been reviewed. The evolutions of the octupole strength with the numbers of protons and neutrons are discussed.
{"title":"Experimental review of octupole correlations in the A≈80 mass region","authors":"X. Han, C. Liu, S. Y. Wang","doi":"10.1142/s0218301323400037","DOIUrl":"https://doi.org/10.1142/s0218301323400037","url":null,"abstract":"This review presents the nuclei with octupole correlations in the [Formula: see text] mass region. The status of experimental data on the behavior of the energy displacement, the [Formula: see text] transition probability and intrinsic electric dipole moment have been reviewed. The evolutions of the octupole strength with the numbers of protons and neutrons are discussed.","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44448016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-24DOI: 10.1142/s0218301323500143
Keivan Darooyi Divshali, M. Shojaei
{"title":"Cluster Model for Calculation Binding Energy of 222,224Ra","authors":"Keivan Darooyi Divshali, M. Shojaei","doi":"10.1142/s0218301323500143","DOIUrl":"https://doi.org/10.1142/s0218301323500143","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41418271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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