Title

Spectroscopy of neutron-unbound F-27,F-28

Document Type

Article

Publication Date

3-22-2012

Publication Source

Physical Review C

Volume Number

85

Issue Number

3

Publisher

American Physical Society

ISSN

0556-2813

Abstract

The ground state of F-28 has been observed as an unbound resonance 220 keV above the ground state of F-27. A comparison of this result with USDA/USDB shell model predictions leads to the conclusion that the F-28 ground state is primarily dominated by sd-shell configurations. Here we present a detailed report on the experiment in which the ground state resonance of F-28 was first observed. Additionally, we report the first observation of a neutron-unbound excited state in F-27 at an excitation energy of 2500(220) keV.

Keywords

Article stability, Rich nuclei, Sweeper magnet, Fragmentation, Search, System, O-26, N=20, NSCL

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