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International Journal of Modern Physics E-nuclear Physics最新文献

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A systematic study of α decay half-lives for Ac, Th, Pa, U and Np isotopes with A = 205-245 using the modified generalized liquid drop model 用改进的广义液滴模型系统地研究了A = 205 ~ 245的Ac、Th、Pa、U和Np同位素α衰变半衰期
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-09 DOI: 10.1142/s0218301323500477
K. P. Santhosh, Dashty T. Akrawy, Tinu Ann Jose, Ali H. Ahmed, H. Hassanabadi, S. S. Hosseini, V. Zanganah, L. Sihver
{"title":"A systematic study of α decay half-lives for Ac, Th, Pa, U and Np isotopes with A = 205-245 using the modified generalized liquid drop model","authors":"K. P. Santhosh, Dashty T. Akrawy, Tinu Ann Jose, Ali H. Ahmed, H. Hassanabadi, S. S. Hosseini, V. Zanganah, L. Sihver","doi":"10.1142/s0218301323500477","DOIUrl":"https://doi.org/10.1142/s0218301323500477","url":null,"abstract":"The Modified Generalized Liquid Drop Model (MGLDM) has been used for calculating the ground-to-ground states of [Formula: see text]-decay half-lives for various Ac, Th, Pa, U and Np isotopes in the mass number range of [Formula: see text]. To account for the nuclear proximity energy, the potential of Blocki et al. 74 [J. Blocki, J. Randrup, W. J. Swiatecki and C. F. Tsang, Ann. Phys. NY 105 (1977) 427] is used. The experimental [Formula: see text] values are used to evaluate the [Formula: see text]-decay half-lives. It can be observed that the logarithm of [Formula: see text]-decay half-life increases with increasing neutron number ([Formula: see text]), with evident minimum at the magic number 126, where the neutron shell is closed. The calculated results are compared with available experimental data and with the predictions of different empirical formulae such as, ARF, MARF, Royer, AKRE, Akrawy, NRB, VS, MVS, YQZR and MYQZR. It is found that the MGLDM is able to predict the experimental half-lives with a standard deviation of 0.6892 (the lowest one among all the other applied empirical formulae), and is therefore suitable for predicting the [Formula: see text]-decay half-lives for unknown and new heavy nuclei.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":" 76","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191129","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}
引用次数: 0
Analytical solution for nuclear plus atomic Hulthen potential-A perturbative approach 核加原子Hulthen势的解析解- a微扰方法
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-09 DOI: 10.1142/s0218301323500520
M. Majumder, U. Laha, A. Panigrahi
{"title":"Analytical solution for nuclear plus atomic Hulthen potential-A perturbative approach","authors":"M. Majumder, U. Laha, A. Panigrahi","doi":"10.1142/s0218301323500520","DOIUrl":"https://doi.org/10.1142/s0218301323500520","url":null,"abstract":"In this work, we construct the analytical solution of the Schrödinger equation for a combined nuclear plus atomic Hulthén potential with different range parameters, using the Frobenius method. The atomic Hulthén potential acts as the screened Coulomb potential to represent the very short-range electromagnetic interaction. It is intended to emphasize how the impact of the combined potential in these situations is routinely examined within the context of nuclear physics. The Jost function is calculated from its integral representation in terms of the regular solution. From the phase of the Jost function, the scattering phase shifts for different partial waves, and further differential scattering cross-section and total cross-sections are calculated for alpha-proton and proton–proton systems. On comparing with the existing experimental data, we conclude that the results obtained are in close conformity with the previous works that exist in the literature.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":" 92","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191834","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}
引用次数: 0
Double Folding Analysis of the α+28Si Elastic Scattering System α+28Si弹性散射系统的双折叠分析
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-09 DOI: 10.1142/s0218301323500490
Ahmed Hammad Amer
{"title":"Double Folding Analysis of the α+<sup>28</sup>Si Elastic Scattering System","authors":"Ahmed Hammad Amer","doi":"10.1142/s0218301323500490","DOIUrl":"https://doi.org/10.1142/s0218301323500490","url":null,"abstract":"Using the double folding model (DFM), we reanalyzed 20 sets of experimental angular distributions for the elastic scattering [Formula: see text]+[Formula: see text]Si system in a wide energy range of [Formula: see text]-particles from 12.7[Formula: see text]MeV to 240[Formula: see text]MeV. We used three effective nucleon–nucleon (NN) interactions that are CDM3Y6, São Paulo Potential (SPP2), and Brazilian Nuclear Potential (BNP) to generate the DF potentials. The data analysis was performed using semi-microscopic (SM) and fully microscopic (FM) methods. In the SM approach, the real part of the optical potential (OP) is created with the DFM, and the Woods–Saxon (WS) potential is considered for the imaginary part of the OP. In the FM approach, the DF potential renormalization factors [Formula: see text] and [Formula: see text] for the real and imaginary parts of the OP were extracted. We investigated the energy dependencies of the [Formula: see text] and [Formula: see text] factors, as well as of nuclear potential volume integrals and reaction cross-sections. We reasonably reproduced the data using [Formula: see text] and [Formula: see text] factors obtained from their energy-dependent functions.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":" 84","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191124","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}
引用次数: 0
Role of equation of state and clusterization algorithms on nuclear vaporization 状态方程和聚类算法在核汽化中的作用
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-08 DOI: 10.1142/s0218301323500532
Navjot K. Dhillon, Sejal Ahuja, Rajat Rana, Sakshi Gautam
{"title":"Role of equation of state and clusterization algorithms on nuclear vaporization","authors":"Navjot K. Dhillon, Sejal Ahuja, Rajat Rana, Sakshi Gautam","doi":"10.1142/s0218301323500532","DOIUrl":"https://doi.org/10.1142/s0218301323500532","url":null,"abstract":"By using the Quantum Molecular Dynamics (QMD) model, a study on the nuclear vaporization in [Formula: see text] collision is presented for different nuclear equations of state along with a systematic comparison of different clusterization methods based on simple spatial correlations, spatial-momentum correlations, mass dependent binding energy cuts and Simulated Annealing Clusterization Algorithm (SACA). The effect of different nuclear equations of state i.e., Soft, Hard and Soft with Momentum Dependent (SMD) interactions on the energy of onset of vaporization for [Formula: see text] collisions is predicted by investigating gas/liquid content and probability of vaporization versus incident energy behavior. These two observables probe the critical point of nuclear vaporization very well. Further outcome of different clusterization algorithms on the energy of onset of nuclear vaporization is also probed and a comparison of calculations with the experimental data for [Formula: see text] and [Formula: see text] collisions is carried out for different clusterization algorithms.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":" 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293267","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}
引用次数: 0
Classification of pairing phase transition in the hot nucleus 热核中配对相变的分类
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-08 DOI: 10.1142/s0218301323500507
Yuhang Gao, Yanlong Lin, Lang Liu
{"title":"Classification of pairing phase transition in the hot nucleus","authors":"Yuhang Gao, Yanlong Lin, Lang Liu","doi":"10.1142/s0218301323500507","DOIUrl":"https://doi.org/10.1142/s0218301323500507","url":null,"abstract":"The hot nucleus [Formula: see text] is investigated using covariant density functional theory, where the shell-model-like approach treats the pairing correlation. Lee–Yang’s theorem is applied to classify the pairing phase transition by analyzing the distribution of zeros of the partition function in the complex temperature plane. The distribution of zeros of the partition function converges with increasing particle numbers and illustrates the characteristics of the phase transition. In our calculations, we determine the first-order of the phase transition near the critical temperature. Different seniority states show the pairing phase transition from a superfluid to a normal phase, ranging from fully paired states to completely unpaired states.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":" 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293376","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}
引用次数: 0
QCD vacuum and baryon masses QCD真空和重子质量
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-03 DOI: 10.1142/s021830132350060x
Igor A. Mazur, Youngman Kim, Masayasu Harada, Hyun Kyu Lee
{"title":"QCD vacuum and baryon masses","authors":"Igor A. Mazur, Youngman Kim, Masayasu Harada, Hyun Kyu Lee","doi":"10.1142/s021830132350060x","DOIUrl":"https://doi.org/10.1142/s021830132350060x","url":null,"abstract":"We propose a novel approach to study a possible role of the quantum chromodynamics vacuum in nuclear and hadron physics. Our proposal is essentially to introduce a candidate of the QCD vacuum through a gluon background field and calculate physical quantities as a function of the background field. In the present work we adopt the Copenhagen (spaghetti) vacuum. As a first application of the our approach, we investigate the effects of the Copenhagen vacuum on the ground-state baryon masses. We find that the baryon mass does depend on a parameter that characterizes the Copenhagen vacuum and satisfies the Gell-Mann-Okubo mass relation for the baryon octet. We also estimate the value of the parameter and discuss the chiral invariant nucleon mass in our framework.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"10 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135868014","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}
引用次数: 0
Kinetic theory of overpopulated gluon systems with inelastic processes 具有非弹性过程的稠密胶子系统的动力学理论
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-03 DOI: 10.1142/s0218301323500611
Zhengyu Chen
{"title":"Kinetic theory of overpopulated gluon systems with inelastic processes","authors":"Zhengyu Chen","doi":"10.1142/s0218301323500611","DOIUrl":"https://doi.org/10.1142/s0218301323500611","url":null,"abstract":"In this work, the role of inelastic processes in the formation of a transient Bose-Einstein condensation (BEC) is investigated based on kinetic theory. We calculate the condensation rate for an overpopulated gluon system which is assumed to be in thermal equilibrium and with the presence of a BEC. The matrix elements of the inelastic processes are chosen as the isotropic one and the gluons are considered to have a finite mass. Our calculations indicate that the inelastic processes can hinder the formation of a BEC since the negatively infinite net condensation rate can destroy any BEC instantly.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"88 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135868976","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}
引用次数: 0
Search for a three-proton resonance state in d+12C, α+12C and 12C+12C collisions at 3.37 A GeV 在3.37 a GeV的d+12C， α+12C和12C+12C碰撞中寻找三质子共振态
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-11-02 DOI: 10.1142/s0218301323500519
Kosim Olimov, Otamurod Esanmurodov, Khusniddin K. Olimov, Sherzod Kholbutaev, Bekhzod S. Yuldashev
{"title":"Search for a three-proton resonance state in <i>d</i>+<sup>12</sup>C, <i>α</i>+<sup>12</sup>C and <sup>12</sup>C+<sup>12</sup>C collisions at 3.37 <i>A</i> GeV","authors":"Kosim Olimov, Otamurod Esanmurodov, Khusniddin K. Olimov, Sherzod Kholbutaev, Bekhzod S. Yuldashev","doi":"10.1142/s0218301323500519","DOIUrl":"https://doi.org/10.1142/s0218301323500519","url":null,"abstract":"The new experimental results on the search and study of formation of a possible three-proton resonance state in a target fragmentation region in the total ensemble of collisions of deuterons ( 2 H), [Formula: see text]-particles ( 4 He), and carbon-12 nuclei with target carbon-12 nuclei at incident kinetic energy 3.37[Formula: see text]GeV per nucleon are presented. The narrow peak structure of a possible three-proton resonance state was observed with a four-sigma statistical significance in the spectrum of invariant masses of three protons in the analyzed ensemble of collisions in the collision events with four protons in the final state. The peak structure was not visible in the other channels with the number of protons equal 3, 5, and [Formula: see text]. The mass and width of this possible three-proton resonance state were estimated to be [Formula: see text][Formula: see text]MeV/[Formula: see text] and [Formula: see text][Formula: see text]MeV/[Formula: see text]. The inclusive cross-section of formation of this possible resonance state was estimated to be [Formula: see text][Formula: see text]mb. It was deduced that the three-proton resonances could possibly be formed as a result of capture by a two-proton resonance (with mass [Formula: see text][Formula: see text]MeV/[Formula: see text]) of one more proton with a close velocity. The observed three-proton as well as two-proton resonances are likely to be the hadronic molecules. Taking into account an alpha cluster structure of carbon-12 nuclei, one of the possible mechanisms of formation of three-proton resonances could be the effective fusing of pair of protons with opposite spins, from one fragmenting alpha cluster, with a proton, originating from the second fragmenting alpha cluster.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"61 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135874127","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}
引用次数: 0
Jost function analysis of elastic and inelastic nucleon-nucleon scattering with a new model potential 基于新模型势的弹性和非弹性核子-核子散射的约斯函数分析
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-10-27 DOI: 10.1142/s0218301323500581
P. Sahoo, B. Swain, U. Laha
{"title":"Jost function analysis of elastic and inelastic nucleon-nucleon scattering with a new model potential","authors":"P. Sahoo, B. Swain, U. Laha","doi":"10.1142/s0218301323500581","DOIUrl":"https://doi.org/10.1142/s0218301323500581","url":null,"abstract":"","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"16 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262588","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}
引用次数: 0
Generator coordinate method for nuclear octupole excitations: status and perspectives 核八极激励的发电机坐标法:现状与展望
International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-10-27 DOI: 10.1142/s0218301323400116
E. F. Zhou, J. M. Yao
{"title":"Generator coordinate method for nuclear octupole excitations: status and perspectives","authors":"E. F. Zhou, J. M. Yao","doi":"10.1142/s0218301323400116","DOIUrl":"https://doi.org/10.1142/s0218301323400116","url":null,"abstract":"","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":"40 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136261907","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}
引用次数: 0
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