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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 LU ; Markenroth Bloch, Karin LU ; 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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author
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
2008-06-24 14:30:19
date last changed
2016-11-17 15:50:59
@misc{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    = {ARRAY(0x81762b0)},
  series       = {Nuclear Physics A},
  title        = {On the b-decay of 9C},
  url          = {http://dx.doi.org/10.1016/S0375-9474(01)00650-9},
  volume       = {692},
  year         = {2001},
}