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Halo Neutrons and the Beta Decay of Li-11

Sarazin, F, Al-Khalili, J S, Ball, G C, Hackman, G, Walker, P M, Austin, R A, Eshpeter, B, Finlay, P, Garrett, P E, Grinyer, G F, Koopmans, K A, Kulp, W D, Leslie, J R, Melconian, D, Osborne, C J, Schumaker, M A, Scraggs, H C, Schwarzenberg, J, Smith, M B, Svensson, C E, Waddington, J C and Wood, J L (2004) Halo Neutrons and the Beta Decay of Li-11 Physical Review C, 70 (3). ISSN 0556-2813


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The beta decay of Li-11 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 Be-10 gamma spectrum, both the half-lives of states in Be-10 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 Be-11 with uncertainties comparable to those obtained from neutron spectroscopy experiments. These data suggest that the beta decay to the 8.81 MeV state in Be-11 occurs in the Li-9 core and that one neutron comprising the halo of Li-11 survives in a halolike configuration after the beta-delayed neutron emission from this level.

Item Type: Article
Additional Information: Published in <i>Physical Review C,</i> Vol. 70, Iss. 3. Copyright 2004 American Physical Society. Click <a href=>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27

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