학술논문
Multiple particle break-up study of low excited states in 9Be: The ghost peak in the 8Be excitation energy spectrum visited
Document Type
Article
Author
Source
European Physical Journal Special Topics; November 2007, Vol. 150 Issue: 1 p137-138, 2p
Subject
Language
ISSN
19516355
Abstract
The aim of this work is to find out the origin of the anomalous resonance in 8Be seen in the reactions through excited states in 9Be. We have populated the 9Be excited states by ?-decay of 9Li. Energy and direction of the two ? particles has been detected and the neutron spectra reconstructed. In our work we identified the ?anomalous resonance" in 8Be observed in several reaction studies as coming from the decay of the 2.43 and 2.78 MeV states in 9Be. This anomalous resonance appears when the two detected ? particles are assumed to form a resonance in 8Be. We argued that the main decaying channels for these two levels in 9Be do not involve 8Be.