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On the b-decay of 9C

Bergmann, U.C. ; Borge, M.J.G. ; Boutami, R. ; Fraile, L.M. ; Fynbo, H.O.U. ; Hornshoj, P. ; Jonson, Björn ; Markenroth Bloch, Karin LU orcid ; Martel, I.I. and Mukha, I. (2001) In Nuclear Physics A 692(3-4). p.427-450
Abstract
In β-decay experiments on 9C at CERN/ISOLDE the β-strength was determined to the ground state, the 12.2 MeV excited state and the Isobaric Analog State (IAS) at 14.655 MeV in 9B. A large β-strength asymmetry is deduced for the mirror transitions of 9C and 9Li to states around 12 MeV excitation energy. A satisfactory description of the three-body decay from a narrow energy region around the 12.2 MeV resonance is obtained within a sequential model involving the ground and first-excited states of 5Li and 8Be. From the study of angular correlations the spin of the 12.2 MeV state is determined as 5/2−. For the first time the population of the IAS is observed in β-decay and new information on the decay of this state is obtained. The advantages... (More)
In β-decay experiments on 9C at CERN/ISOLDE the β-strength was determined to the ground state, the 12.2 MeV excited state and the Isobaric Analog State (IAS) at 14.655 MeV in 9B. A large β-strength asymmetry is deduced for the mirror transitions of 9C and 9Li to states around 12 MeV excitation energy. A satisfactory description of the three-body decay from a narrow energy region around the 12.2 MeV resonance is obtained within a sequential model involving the ground and first-excited states of 5Li and 8Be. From the study of angular correlations the spin of the 12.2 MeV state is determined as 5/2−. For the first time the population of the IAS is observed in β-decay and new information on the decay of this state is obtained. The advantages of a closely packed, highly segmented detector setup are demonstrated. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics A
volume
692
issue
3-4
pages
427 - 450
publisher
Elsevier
external identifiers
  • scopus:0035944275
DOI
10.1016/S0375-9474(01)00650-9
language
English
LU publication?
yes
id
69f000c1-849d-434f-bec8-bfc6267b98de (old id 1122052)
date added to LUP
2016-04-04 09:58:30
date last changed
2022-01-29 19:32:07
@article{69f000c1-849d-434f-bec8-bfc6267b98de,
  abstract     = {{In β-decay experiments on 9C at CERN/ISOLDE the β-strength was determined to the ground state, the 12.2 MeV excited state and the Isobaric Analog State (IAS) at 14.655 MeV in 9B. A large β-strength asymmetry is deduced for the mirror transitions of 9C and 9Li to states around 12 MeV excitation energy. A satisfactory description of the three-body decay from a narrow energy region around the 12.2 MeV resonance is obtained within a sequential model involving the ground and first-excited states of 5Li and 8Be. From the study of angular correlations the spin of the 12.2 MeV state is determined as 5/2−. For the first time the population of the IAS is observed in β-decay and new information on the decay of this state is obtained. The advantages of a closely packed, highly segmented detector setup are demonstrated.}},
  author       = {{Bergmann, U.C. and Borge, M.J.G. and Boutami, R. and Fraile, L.M. and Fynbo, H.O.U. and Hornshoj, P. and Jonson, Björn and Markenroth Bloch, Karin and Martel, I.I. and Mukha, I.}},
  language     = {{eng}},
  number       = {{3-4}},
  pages        = {{427--450}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Physics A}},
  title        = {{On the b-decay of 9C}},
  url          = {{http://dx.doi.org/10.1016/S0375-9474(01)00650-9}},
  doi          = {{10.1016/S0375-9474(01)00650-9}},
  volume       = {{692}},
  year         = {{2001}},
}