Search for the (15)Be ground state
Document Type
Article
Publication Date
10-12-2011
Publication Source
Physical Review C
Volume Number
84
Issue Number
4
First Page
044309
Publisher
American Physical Society
ISSN
0556-2813
Abstract
A two-proton knockout reaction from a (17)C beam at 55 MeV/u was used to produce the unbound nucleus (15)Be. No significant number of events were observed for the decay of (15)Be into a neutron and a (14)Be fragment. An upper limit for the (14)Be production cross section of 0.079 +/- 0.038 mb was extracted, which is more than an order of magnitude smaller than the predicted two-proton knockout reaction cross section. Based on these results we conclude that any populated states in (15)Be decay through three sequential neutron decays into (12)Be, via the unbound first excited state of (14)Be. Therefore, these states in (15)Be must be neutron unbound by more than 1.54 MeV, which is the location of the first excited 2(+) state in (14)Be.
Recommended Citation
Published in: Physical Review C, Volume 84, Issue 4, October 12, 2011, pages 044309-. Copyright © 2011 American Physical Society, College Park, MD. The final published version is available at: http://dx.doi.org/10.1103/PhysRevC.84.044309
