Yazar "Kumar, Pawan" seçeneğine göre listele

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    A way forward towards the improvement of tensor force in pf-shell
    (Elsevier, 2020) Jha, Kanhaiya; Kumar, Pawan; Sarkar, Shahariar; Raina, P. K.; Aydin, Sezgin
    In many shell model interactions, the tensor force monopole matrix elements are observed to retain sys-tematic trends originating in the bare tensor force. In this work, however, we note for GX-interactions of pf-shell that the seven out of ten T = 1 tensor force monopole matrix elements do not share these systematic. We ameliorate this disparity making use of Yukawa-type tensor force and spin-tensor decomposition. Furthermore, we have modified the single-particle energy of 1(p3/2) orbit and two TBMEs of 0f-orbit, and the revised interaction has been tested from Ca to Ge isotopes with various physics viewpoints. The results are found to be satisfactory with respect to the experimental data. (c) 2020 Elsevier B.V. All rights reserved.
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    Four pseudo-mirror nuclei in the left-lower part of the nuclear chart
    (Elsevier, 2022) Kumar, Pawan; Gautam, Ratindra; Aydin, Sezgin; Ozfidan, Aysel
    In the present work, we have reported four new pseudo-mirror nuclei Fe-64-Zn-70 and Cr-60-Ge-74. We have discussed the symmetry in their ground state energy band and kinematic moment of inertia. Further, we have discussed the pseudo-spin coupling in the view of pseudo-mirror nuclei. (C) 2022 Elsevier B.V. All rights reserved.
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    Pseudo-mirror nuclei in A-80 mass region
    (Elsevier, 2021) Kumar, Pawan; Aydin, Sezgin
    In the present work, an investigation of pseudo-mirror nuclei is extended to A-80 mass region. Within the limits of N-p N-n approximation, nuclei Ge-72-Sr-84, Se-76-Kr-80, Se-74-Sr-82, and Kr-76-Sr-80 are identified as pseudo-mirror nuclei. A systematic comparison of their ground-state energy spectra, kinematic moment of inertia, and reduced transition probability B(E2) is presented. Furthermore, we have discussed the purview of the permitted range of N-p N-n approximation for pseudo-mirror nuclei. (C) 2021 Elsevier B.V. All rights reserved.