Advanced

Evidence for a new low-lying resonance state in 7He

Meister, M; Markenroth Bloch, Karin LU ; Aleksandrov, D; Aumann, T; Axelsson, L; Baumann, T; Borge, M J G; Chulkov, L V; Dostal, W and Eberlein, B, et al. (2002) In Physical Review Letters 88(10).
Abstract
Low-lying resonance states in 7He(6He+n), formed after fragmentation reactions of a 227 MeV/nucleon 8He beam on a carbon target, have been studied. Coincidences between 6He nuclei and neutrons, corresponding to the one-neutron knockout channel in 8He, were selected. The relative energy spectrum in the 6He+n system shows a structure, which is interpreted as the 7He ( Ipi = 3/2(-)) ground state, unbound with 0.43(2) MeV relative to the 6He+n system and a width of Gamma = 0.15(8) MeV overlapping with an excited ( Ipi = 1/2(-)) state observed at 1.0(1) MeV with a width of Gamma = 0.75(8) MeV.
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
publishing date
type
Contribution to journal
publication status
published
in
Physical Review Letters
volume
88
issue
10
publisher
American Physical Society
external identifiers
  • pmid:11909350
  • scopus:0037061218
ISSN
1079-7114
DOI
10.1103/PhysRevLett.88.102501
language
English
LU publication?
no
id
db69ae1e-b08e-493a-86ad-c341a7d91e06 (old id 1125279)
date added to LUP
2008-05-27 13:52:25
date last changed
2017-12-10 03:51:38
@article{db69ae1e-b08e-493a-86ad-c341a7d91e06,
  abstract     = {Low-lying resonance states in 7He(6He+n), formed after fragmentation reactions of a 227 MeV/nucleon 8He beam on a carbon target, have been studied. Coincidences between 6He nuclei and neutrons, corresponding to the one-neutron knockout channel in 8He, were selected. The relative energy spectrum in the 6He+n system shows a structure, which is interpreted as the 7He ( Ipi = 3/2(-)) ground state, unbound with 0.43(2) MeV relative to the 6He+n system and a width of Gamma = 0.15(8) MeV overlapping with an excited ( Ipi = 1/2(-)) state observed at 1.0(1) MeV with a width of Gamma = 0.75(8) MeV.},
  articleno    = {102501},
  author       = {Meister, M and Markenroth Bloch, Karin and Aleksandrov, D and Aumann, T and Axelsson, L and Baumann, T and Borge, M J G and Chulkov, L V and Dostal, W and Eberlein, B and Elze, Th W and Emling, H and Forssen, C and Geissel, H and Hellström, Margareta and Holzmann, R and Jonson, B and Kratz, J V and Kulessa, R and Leifels, Y and Leistenschneider, A and Mukha, I and Münzenberg, G and Nickel, F and Nilsson, T and Nyman, G and Richter, A and Riisager, K and Scheidenberger, C and Schrieder, G and Simon, H and Tengblad, O and Zhukov, M V},
  issn         = {1079-7114},
  language     = {eng},
  number       = {10},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Evidence for a new low-lying resonance state in 7He},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.88.102501},
  volume       = {88},
  year         = {2002},
}