A detailed study of nuclear structure of odd-mass Pm isotopes near N = 82 shell closure

• Published in: European physical journal plus Vol. 136; no. 1; p. 22
• Main Authors: Rani, Veerta, Kumar, Amit, Singh, Suram, Rajput, Manvi, Bharti, Arun, Bhat, G. H., Sheikh, J. A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-01-2021; Springer Nature B.V
• Subjects: Angular momentum; Applied and Technical Physics; Atomic; Complex Systems; Condensed Matter Physics; Experimental data; Isotopes; Magnetic transitions; Mathematical and Computational Physics; Molecular; Nuclear structure; Optical and Plasma Physics; Parity; Physics; Physics and Astronomy; Regular Article; Spectrum analysis; Theoretical; Wave functions
• ISSN: 2190-5444; 2190-5444
• DOI: 10.1140/epjp/s13360-020-00974-9

A systematic study of the positive as well as negative parity yrast structure for the odd-mass
145−149
Pm isotopes is carried out by using the angular momentum projection technique implemented in the projected shell model (PSM). By assuming an axial symmetry in the deformed basis, we have been able to calculate the yrast states up to a maximum spin of 47/2 for both positive and negative parity, and as a result, a good agreement is obtained with available experimental data for all isotopes. The intrinsic structure of positive and negative parity yrast states has been found to be built on
πg
7
/
2
⊗
νh
11
/
2
and
πh
11
/
2
⊗
νh
11
/
2
configurations, respectively. The phenomenon of back-bending has also been discussed in the present work. Reduced electric and magnetic transitions probabilities [
B(E
2
)
and
B(M
1
)
] are also calculated using the PSM wave functions. Since experimental data on
B(E
2
)
and
B(M
1
)
are not available, these results can serve as motivation for experimentalists to look for these data. However, the theoretical values of transition strength ratio
B(M
1
)/B(E
2
)
have been found to be matching excellently with the experimental ones.