Halo neutrons and the {beta} decay of {sup 11}Li
- Department of Physics, Colorado School of Mines, Golden, Colorado 80401 (United States)
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4K1 (Canada)
- Department of Physics, University of Guelph, Guelph, Ontario, N1G 2W1 (Canada)
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
- Department of Physics, Queen's University, Kingston, Ontario, K7L 3N6 (Canada); and others
The {beta} decay of {sup 11}Li has been investigated at TRIUMF-ISAC using a high-efficiency array of Compton suppressed HPGe detectors. From a line-shape analysis of the Doppler-broadened peaks observed in the {sup 10}Be {gamma} spectrum, both the half-lives of states in {sup 10}Be and the energies of the {beta}-delayed neutrons feeding those states were obtained. Furthermore, it was possible to determine the excitation energies of the parent states in {sup 11}Be with uncertainties comparable to those obtained from neutron spectroscopy experiments. These data suggest that the {beta} decay to the 8.81 MeV state in {sup 11}Be occurs in the {sup 9}Li core and that one neutron comprising the halo of {sup 11}Li survives in a halolike configuration after the {beta}-delayed neutron emission from this level.
- OSTI ID:
- 20695493
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 70, Issue 3; Other Information: DOI: 10.1103/PhysRevC.70.031302; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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