Eur. Phys. J. A (2016) 52: 11
https://doi.org/10.1140/epja/i2016-16011-8

Regular Article - Theoretical Physics

Nature of the E_n = 1.24 MeV state in ¹²Be

Department of Physics and Astronomy, University of Pennsylvania, 19104, Philadelphia, Pennsylvania, USA

^* e-mail: fortune@physics.upenn.edu

Received: 17 August 2015
Accepted: 14 December 2015
Published online: 20 January 2016

Abstract

I suggest that a new state (Phys. Rev. C 90, 024309 (2014)) observed in ¹²Be, with a neutron decay energy of 1243keV, is likely to be , rather than the previously suggested (, ( )). Primary p-wave decay is then to the first excited state of ¹¹Be, but a possible d-wave g.s. branch could be as large as about 10%.