Research Interests:
Research Interests:
Research Interests:
Nuclear structure studies for even-even nuclei in the mass region ∼130, have been performed, with a special focus around N or Z = 64. On the onset of deformation and lying between two closed shell, these nuclei have attracted attention in... more
Nuclear structure studies for even-even nuclei in the mass region ∼130, have been performed, with a special focus around N or Z = 64. On the onset of deformation and lying between two closed shell, these nuclei have attracted attention in a number of studies. A revisit to these experimentally accessible nuclei has been made via the relativistic mean field. The role of pairing and density depletion in the interior has been specially investigated. Qualitative analysis between two versions of relativistic mean field suggests that there is no significant difference between the two approaches. Moreover, the role of the filling s1/ 2 orbital in density depletion towards the centre has been found to be consistent with our earlier work on the subject Shukla and Aberg (2014 Phys. Rev. C 89 014329). (Less)
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Research Interests:
Research Interests:
Abstract.Proton capture reactions play a very important role in the understanding of nucleosynthesis. In the present work, p-capture reactions have been studied coherently with nuclear structure for the nuclei under consideration. We have... more
Abstract.Proton capture reactions play a very important role in the understanding of nucleosynthesis. In the present work, p-capture reactions have been studied coherently with nuclear structure for the nuclei under consideration. We have calculated proton capture cross sections and S-factor for relevant isotopes of molybdenum and cadmium in the energy range 2.0 to 4.5 Mev. Calculated results for nuclear structure as well reaction rates are compared with the available experimental and theoretical results and are found to be in good agreement.
Research Interests:
Research Interests:
The formation of the chemical elements and understanding their abundance has been one of the most puzzling problems. The subject gained initial momentum from remarkable work of E. M. Burbidge, G. R. Burbidge, W. A. Fowler, F. Hoyle, and... more
The formation of the chemical elements and understanding their abundance has been one of the most puzzling problems. The subject gained initial momentum from remarkable work of E. M. Burbidge, G. R. Burbidge, W. A. Fowler, F. Hoyle, and A. Cameron. Majority of chemical elements heavier than iron are expected to be formed by neutron capture reactions in sor rprocess. Still, there exist about 35 proton rich nuclides, which are heavier than Iron (lying between Se and Hg), occurring naturally, can not be produced by sor r-process. Abundance of these p-nuclei is 10-1000 times lesser in comparison to s or r-isotopes (nuclei formed through s and r process) in the solar system. There are thousands of nuclear reaction involving stable and unstable nuclei, needed for the detailed modelling of p-process nucleosynthesis. There are number of ongoing experiments to study capture reactions via differernt type of technique. Particularly, the number of nuclear reactions that can be studied experimen...
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New shapes and structure of nuclei have been fascinating to nuclear physicists since long, however these have renewed attraction due to advancement in the experimental facilities and increasing accessibility to nuclei lying at extremes in... more
New shapes and structure of nuclei have been fascinating to nuclear physicists since long, however these have renewed attraction due to advancement in the experimental facilities and increasing accessibility to nuclei lying at extremes in the nuclear landscape. The advancements in experimental nuclear physics facilities have led our experimental access to many new shapes and structures in the nuclear physics, which exists in nuclear chart but do not occur naturally. This has been quite helpful in developing our understanding for some of the fundamental questions of astrophysics as well as nuclear physics and bridging the both. Because of these various possibilities, a thorough study of the stability of a bubble nucleus is called for. Possibility of the formation of bubble nuclei has been explored through different nuclear models and in different mass regions. The major concern in all these investigations has been to find out the reason for anomalous depletion of density in the cente...
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Almost all the nuclei heavier than the iron are formed by the neutron capture s and r process but there exist thirty five neutron deficient nuclei between 74 Se to 196 Hg, which are not synthesized by neutron capture processes, supposed... more
Almost all the nuclei heavier than the iron are formed by the neutron capture s and r process but there exist thirty five neutron deficient nuclei between 74 Se to 196 Hg, which are not synthesized by neutron capture processes, supposed to be synthesized by the p-process, are called as pnuclei. Photodisintegrations reactions such as (γ, n), (γ, p) and (γ, α) with very high temperature in the stellar environment have been preferred for the synthesis of p-nuclei by the rigorous studies. The detailed modeling of the p-process nucleosynthesis is highly needed to know the abundance of the p-nuclei. To describe the pprocess network simulation, thousands of nuclei involving a large reaction network of thousands of reaction rates (which are obtained by the cross sections) is required. There are various experimental techniques employed for the measurement of cross-section data within the Gamow window such as activation technique, In beam method (angular distribution method and γ-summing tech...
In recent past, number of experimental and theoretical efforts has been devoted to understand the astrophysical p-process mechanism of stellar nucleosynthesis, due to its larger significance in the context of astrophysical network... more
In recent past, number of experimental and theoretical efforts has been devoted to understand the astrophysical p-process mechanism of stellar nucleosynthesis, due to its larger significance in the context of astrophysical network calculations. Almost all the nuclei above iron are synthesized by the neutron capture s and r process. There are only thirty five nuclei between Se to Hg, which are not synthesized by neutron capture processes, expected to be formed by p-process so called p-nuclei [1]. It has been suggested that the photodisintegrations reactions such as (γ, n), (γ, p) and (γ, α) are responsible for the production of p-nuclei with very high temperature in the stellar environment, yet the exact process of the formation of p-nuclei is to be confirmed. The detailed modeling of the p-process is highly desired to know the abundance of the pprocess. A large reaction network of thousands of reaction rates (which are calculated by the cross sections) involving thousands of nuclei ...
Research Interests:
Nuclear structure studies for even-even nuclei in the mass region ∼130, have been performed, with a special focus around N or Z = 64. On the onset of deformation and lying between two closed shell, these nuclei have attracted attention in... more
Nuclear structure studies for even-even nuclei in the mass region ∼130, have been performed, with a special focus around N or Z = 64. On the onset of deformation and lying between two closed shell, these nuclei have attracted attention in a number of studies. A revisit to these experimentally accessible nuclei has been made via the relativistic mean field. The role of pairing and density depletion in the interior has been specially investigated. Qualitative analysis between two versions of relativistic mean field suggests that there is no significant difference between the two approaches. Moreover, the role of the filling s1/ 2 orbital in density depletion towards the centre has been found to be consistent with our earlier work on the subject Shukla and Aberg (2014 Phys. Rev. C 89 014329). (Less)
Research Interests:
Research Interests:
Abstract.Proton capture reactions play a very important role in the understanding of nucleosynthesis. In the present work, p-capture reactions have been studied coherently with nuclear structure for the nuclei under consideration. We have... more
Abstract.Proton capture reactions play a very important role in the understanding of nucleosynthesis. In the present work, p-capture reactions have been studied coherently with nuclear structure for the nuclei under consideration. We have calculated proton capture cross sections and S-factor for relevant isotopes of molybdenum and cadmium in the energy range 2.0 to 4.5 Mev. Calculated results for nuclear structure as well reaction rates are compared with the available experimental and theoretical results and are found to be in good agreement.