scholarly journals NUCLEAR STRUCTURE STUDY WITH CORE EXCITATIONS IN Ni REGION: FOR fpg9/2 SPACE

2012 ◽  
Vol 27 (13) ◽  
pp. 1250061 ◽  
Author(s):  
P. C. SRIVASTAVA

Shell model calculations for Ni, Cu and Zn isotopes by modifying fpg interaction due to Sorlin et al. [Phys. Rev. Lett. 88, 092501 (2002)] have been reported. In the present work, 28 two-body matrix elements of the earlier interaction have been modified. Present interaction is able to explain new experimental results for this region.

2012 ◽  
Vol 21 (01) ◽  
pp. 1250007 ◽  
Author(s):  
P. C. SRIVASTAVA ◽  
I. MEHROTRA

Yrast levels of Ni , Cu and Zn isotopes for 40 ≤ N ≤ 50 have been described by state-of-the-art shell model calculations with three recently available interactions using 56 Ni as a core in the f5/2pg9/2 model space. The results are unsatisfactory viz. large E(2+) for very neutron-rich nuclei, small B(E2) values in comparison to experimental values. These results indicate an importance of inclusion of πf7/2 and νd5/2 orbitals in the model space to reproduce collectivity in this region.


1969 ◽  
Vol 27 (2) ◽  
pp. 504-504 ◽  
Author(s):  
Toshiyuki Ishimatsu ◽  
Haruko Ohmura ◽  
Takashi Awaya ◽  
Takemi Nakagawa ◽  
Hikonojo Orihara ◽  
...  

1977 ◽  
Vol 42 (4) ◽  
pp. 1098-1105 ◽  
Author(s):  
Masaharu Hoshi ◽  
Mamoru Fujiwara ◽  
Yasukazu Yoshizawa

2021 ◽  
Vol 66 (4) ◽  
pp. 293
Author(s):  
A.A. Al-Sammarraie ◽  
F.A. Ahmed ◽  
A.A. Okhunov

The negative-parity states of 24Mg nucleus are investigated within the shell model. We are based on the calculations of energy levels, total squared form factors, and transition probability using the p-sd-pf (PSDPF) Hamiltonian in a large model space (0 + 1) hW. The comparison between the experimental and theoretical states showed a good agreement within a truncated model space. The PSDPF-based calculations successfully reproduced the data on the total squared form factors and transition probabilities of the negative-parity states in 24Mg nucleus. These quantities depend on the one-body density matrix elements that are obtained from the PSDPF Hamiltonian. The wave functions of radial one-particle matrix elements calculated with the harmonic-oscillator potential are suitable to predict experimental data by changing the center-of-mass corrections.


1970 ◽  
Vol 1 (1) ◽  
pp. 346-349 ◽  
Author(s):  
James J. Kent ◽  
C. Fred Moore ◽  
Charles E. Watson

2018 ◽  
Vol 178 ◽  
pp. 02019
Author(s):  
He Wang ◽  
Nori Aoi ◽  
Satoshi Takeuchi ◽  
Masafumi Matsushita ◽  
Pieter Doornenbal ◽  
...  

The neutron-rich nuclei 136Sn and 132Cd have been studied in the purpose of nuclear structure for the nuclei beyond the doubly-magic nucleus 132Sn. The 2+1 → 0+ gs transitions were identified for these two nuclei using in-beam γ-ray spectroscopy in coincidence with one- and two-proton removal reactions, respectively, at the RIKEN Radioactive Isotope Beam Factory. The 2+ 1 state in 136Sn is found to be similar to that for 134Sn indicating the seniority scheme may also hold for the heavy tin isotopes beyond N = 82. For 132Cd, the 2+ 1 state provides the first spectroscopic information in the even-even nuclei locating in the region “southeast” of 132Sn and the result is discussed in terms of proton-neutron configuration mixing. In both these two nuclei, it was found that the valence neutrons play an essential role in their low-lying excitations.


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