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Identification of Excited States in 61Ga: Mirror Nuclei in the Upper fp Shell

Andersson, Lise-Lotte LU ; Johansson, Emma LU ; Ekman, Jörgen LU ; Rudolph, Dirk LU ; du Rietz, Rickard LU ; Fahlander, Claes LU ; Gross, CJ; Hausladen, PA; Radford, DC and Hammond, G (2005) In Physical Review C (Nuclear Physics) 71(1).
Abstract
In the fusion-evaporation reaction Ca-40+Mg-24 at 104 MeV beam energy, excited states have been observed for the first time in the isotope Ga-31(61)30. The experimental setup comprised the Ge array CLARION, a recoil mass spectrometer and, in its focal plane, an ionization chamber. Five transitions in Ga-61 are identified, out of which a cascade of three transitions has been established by means of recoil-gammagamma coincidences. The strong transitions at 271 keV in Ga-61 and 124 keV in Zn-61 are viewed as the "mirror" 5/2(-)-->3/2(-) ground-state transitions. The rather large energy difference of 150 keV is suggested to arise from Coulomb monopole contributions. Shell-model calculations support this interpretation.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
71
issue
1
publisher
American Physical Society
external identifiers
  • wos:000226701900003
  • scopus:18244398422
ISSN
0556-2813
DOI
10.1103/PhysRevC.71.011303
language
English
LU publication?
yes
id
76bd51b4-b703-4ed4-a3ee-1a3055bf34eb (old id 254117)
date added to LUP
2007-08-14 16:48:44
date last changed
2017-10-22 04:44:53
@article{76bd51b4-b703-4ed4-a3ee-1a3055bf34eb,
  abstract     = {In the fusion-evaporation reaction Ca-40+Mg-24 at 104 MeV beam energy, excited states have been observed for the first time in the isotope Ga-31(61)30. The experimental setup comprised the Ge array CLARION, a recoil mass spectrometer and, in its focal plane, an ionization chamber. Five transitions in Ga-61 are identified, out of which a cascade of three transitions has been established by means of recoil-gammagamma coincidences. The strong transitions at 271 keV in Ga-61 and 124 keV in Zn-61 are viewed as the "mirror" 5/2(-)-->3/2(-) ground-state transitions. The rather large energy difference of 150 keV is suggested to arise from Coulomb monopole contributions. Shell-model calculations support this interpretation.},
  articleno    = {011303(R)},
  author       = {Andersson, Lise-Lotte and Johansson, Emma and Ekman, Jörgen and Rudolph, Dirk and du Rietz, Rickard and Fahlander, Claes and Gross, CJ and Hausladen, PA and Radford, DC and Hammond, G},
  issn         = {0556-2813},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Identification of Excited States in 61Ga: Mirror Nuclei in the Upper fp Shell},
  url          = {http://dx.doi.org/10.1103/PhysRevC.71.011303},
  volume       = {71},
  year         = {2005},
}