Pseudospin partner bands in Ba130

Abstract

The high-spin states in 130 Ba have been investigated using the 122 Sn( 13 C,5n) reaction and the GALILEO array coupled to the EUCLIDES and Neutron Wall ancillary detectors. The level scheme has been extended to an excitation energy of ∼ 12 MeV and spin 28. Two sets of pseudospin partner bands have been identified built on πh 11/2 (g 7/2 , d 5/2 ) and νh 11/2 (s 1/2 , d 3/2 ) configurations. The assignments are supported by the calculation using the projected shell model.

Systematic study of magnetic and antimagnetic rotational bands

“…Up to now, 253 magnetic rotational bands in 123 nuclei have been reported in the A ∼ 60 [18,19,[37][38][39][40][41][42], 80 [16,, 110 [26,30,, 140 [13,17,, and 190 [6,7,20,35, mass regions. In contrast, the experimental observation of AMR bands is scarce and so far only 40 antimagnetic rotational bands are reported in 29 nuclei and mainly distributed in the A ∼ 60 [19,42,278], 110 [21, 23-26, 29-31, 40, 110, 112, 115, 119, 130, 279-313], and 140 [156,215,[314][315][316][317][318] In order to promote the study of magnetic and antimagnetic rotations, the systematics of MR and AMR bands are required. In this paper, we mainly focus on the discussion of spin I, kinematic moment-of-inertia  (1) = I/ω, and dynamic moment-of-inertia  ( 2 ) versus rotational frequency ω, as well as energy staggering parameter S(I), the magnetic dipole reduced transition probability B(M1), the electric quadrupole reduced transition probability B(E2) and the B(M1)/B(E2) ratio versus spin I in the A ∼ 60, 80, 110, 140, and 190 mass regions for MR bands.…”

Exploration of origin and breaking mechanism of pseudospin symmetry in relativistic point-coupling model with similarity renormalization group

“…The two single-particle levels with the quantum numbers (n − 1, l + 2, j = l + 3/2) and (n, l, j = l + 1/2) are approximately degeneracy, and are marked as pseudospin partners (n n l l j l 1, 1, 1 2 ˜˜= -= + =  ) [4,5]. The introduction of PSS has been considerably successful in describing many nuclear phenomena, such as magnetic moments [6], identical bands [7][8][9], and pseudospin partner bands [10][11][12].…”