High-spin states and neutron-hole influence in 209At

Sjoreen, T. P. ; Schatz, G. ; Bhattacherjee, S. K. ; Brown, B. A. ; Fossan, D. B. ; Lesser, P. M. S. (1976) High-spin states and neutron-hole influence in 209At Physical Review C, 14 (3). pp. 1023-1032. ISSN 0556-2813

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Official URL: http://prc.aps.org/abstract/PRC/v14/i3/p1023_1

Related URL: http://dx.doi.org/10.1103/PhysRevC.14.1023


The properties of high-spin states in 209At have been studied with the 206Pb(6Li,3nγ)209At At reaction. In-beam measurements with Ge(Li) detectors of γ-ray excitation functions, γ-γ coincidences, γ-ray angular distributions, and pulsed beam-γ timing were made to establish decay schemes, level energies, spin-parity assignments, isomeric lifetimes, and magnetic moments. High-spin states involving three valence protons in the 1h9/2, 2f7/2, or 1i13/2 orbitals were identified. The electromagnetic properties observed in 209At were compared with those in the closed-neutron core nucleus 211At to examine the influence of the two neutron holes on the proton structure; microscopic calculations of this influence were carried out in perturbation theory.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:3482
Deposited On:12 Oct 2010 04:31
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