Alpha-cluster states in O-18*

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Goldberg VZ, Kallman KM, Lonnroth T, Manngard P, Skorodumov BB
Publisher: MAIK NAUKA/INTERPERIODICA/SPRINGER
Publication year: 2005
Journal: Physics of Atomic Nuclei / Yadernaya Fizika
Journal acronym: PHYS ATOM NUCL+
Volume number: 68
Issue number: 7
Start page: 1079
End page: 1086
Number of pages: 8
ISSN: 1063-7788
eISSN: 1562-692X


Abstract

The excitation function of elastic a-particle scattering on C-14 has been measured in the laboratory energy range 16.3-19.2 MeV using a backscattering technique with a thick target. These data were analyzed together with the old low-energy data of G.L. Morgan et al. in the framework of the R-matrix formalism. Spin-parity assignments were made for 32 states in O-18 in the excitation range 9-20 MeV The estimates of the widths of the states are also presented. The 0(+) and 0(-) alpha-cluster bands appeared to be well separated by 5.6 MeV (as in O-16 and Ne-20). We have not found a confirmation of existence of the negative-parity molecular states proposed by M. Gai et al. We observed an effect of a doubling of a-cluster levels in O-18 similar to that found in Ne-22. (c) 2005 Pleiades Publishing, Inc.

Last updated on 2020-24-02 at 03:13