Back to Search Start Over

Evolution of nuclear structure in neutron-rich odd-Zn isotopes and isomers.

Authors :
Wraith, C.
Yang, X.F.
Xie, L.
Babcock, C.
Bieroń, J.
Billowes, J.
Bissell, M.L.
Blaum, K.
Cheal, B.
Filippin, L.
Garcia Ruiz, R.F.
Gins, W.
Grob, L.K.
Gaigalas, G.
Godefroid, M.
Gorges, C.
Heylen, H.
Honma, M.
Jönsson, P.
Kaufmann, S.
Source :
Physics Letters B. Aug2017, Vol. 771, p385-391. 7p.
Publication Year :
2017

Abstract

Collinear laser spectroscopy was performed on Zn ( Z = 30 ) isotopes at ISOLDE, CERN. The study of hyperfine spectra of nuclei across the Zn isotopic chain, N = 33 – 49 , allowed the measurement of nuclear spins for the ground and isomeric states in odd- A neutron-rich nuclei up to N = 50 . Exactly one long-lived (>10 ms) isomeric state has been established in each 69 – 79 Zn isotope. The nuclear magnetic dipole moments and spectroscopic quadrupole moments are well reproduced by large-scale shell–model calculations in the f 5 pg 9 and fpg 9 d 5 model spaces, thus establishing the dominant term in their wave function. The magnetic moment of the intruder I π = 1 / 2 + isomer in 79 Zn is reproduced only if the ν s 1 / 2 orbital is added to the valence space, as realized in the recently developed PFSDG-U interaction. The spin and moments of the low-lying isomeric state in 73 Zn suggest a strong onset of deformation at N = 43 , while the progression towards 79 Zn points to the stability of the Z = 28 and N = 50 shell gaps, supporting the magicity of 78 Ni. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03702693
Volume :
771
Database :
Academic Search Index
Journal :
Physics Letters B
Publication Type :
Academic Journal
Accession number :
124141127
Full Text :
https://doi.org/10.1016/j.physletb.2017.05.085