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Shape coexistence at high spin in the N = Z+2 nucleus Se-70

Rainovski, G; Schnare, H; Schwengner, R; Plettner, C; Kaubler, L; Donau, F; Ragnarsson, Ingemar LU ; Eberth, J; Steinhardt, T and Thelen, O, et al. (2002) In Journal of Physics G: Nuclear and Particle Physics 28(10). p.2617-2625
Abstract
The nucleus Se-70 was studied using the Ca-40(Ca-40, 2alpha2p) reaction at a beam energy of 185 MeV. Gamma rays were measured with the EUROBALL III spectrometer. The known positive-parity bands have been extended and one new band of positive parity and two of negative parity have been identified. These bands are interpreted in terms of the cranked Nilsson-Strutinsky approach. Calculations suggest that the two negative-parity bands, which have the same signature, are both based on a configuration with two protons and three neutrons lifted from the fp shell to the g(9/2) orbital, but at different nuclear shapes. This represents a shape coexistence at high spin.
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publication status
published
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in
Journal of Physics G: Nuclear and Particle Physics
volume
28
issue
10
pages
2617 - 2625
publisher
IOP Publishing
external identifiers
  • wos:000178940300009
  • scopus:0036388209
ISSN
0954-3899
DOI
10.1088/0954-3899/28/10/307
language
English
LU publication?
yes
id
b42b98c7-c598-4ceb-8fa8-24ea8d9a3c23 (old id 324424)
date added to LUP
2007-11-09 08:11:20
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2017-12-10 04:30:19
@article{b42b98c7-c598-4ceb-8fa8-24ea8d9a3c23,
  abstract     = {The nucleus Se-70 was studied using the Ca-40(Ca-40, 2alpha2p) reaction at a beam energy of 185 MeV. Gamma rays were measured with the EUROBALL III spectrometer. The known positive-parity bands have been extended and one new band of positive parity and two of negative parity have been identified. These bands are interpreted in terms of the cranked Nilsson-Strutinsky approach. Calculations suggest that the two negative-parity bands, which have the same signature, are both based on a configuration with two protons and three neutrons lifted from the fp shell to the g(9/2) orbital, but at different nuclear shapes. This represents a shape coexistence at high spin.},
  author       = {Rainovski, G and Schnare, H and Schwengner, R and Plettner, C and Kaubler, L and Donau, F and Ragnarsson, Ingemar and Eberth, J and Steinhardt, T and Thelen, O and Hausmann, M and Jungclaus, A and Lieb, KP and Muller, A and de Angelis, G and Gadea, A and Napoli, DR and Algora, A and Jenkins, DG and Wadsworth, R and Wilson, A and Andrejtscheff, W and Dimitrov, VI},
  issn         = {0954-3899},
  language     = {eng},
  number       = {10},
  pages        = {2617--2625},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics G: Nuclear and Particle Physics},
  title        = {Shape coexistence at high spin in the N = Z+2 nucleus Se-70},
  url          = {http://dx.doi.org/10.1088/0954-3899/28/10/307},
  volume       = {28},
  year         = {2002},
}