ANALOGOUS NEGATIVE-PARITY SPECTRA OF XE-125 AND XE-127

Citation
I. Wiedenhover et al., ANALOGOUS NEGATIVE-PARITY SPECTRA OF XE-125 AND XE-127, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 350(4), 1995, pp. 287-288
Citations number
5
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
ISSN journal
09397922
Volume
350
Issue
4
Year of publication
1995
Pages
287 - 288
Database
ISI
SICI code
0939-7922(1995)350:4<287:ANSOXA>2.0.ZU;2-R
Abstract
The low spin states of the nucleus Xe-127 have been investigated with the (alpha, 2n) reaction by means of in-beam-gamma-spectroscopy, using the OSIRIS-cube-spectrometer at the FN TANDEM accelerator facility of the University of Cologne. In the negative parity system, four excite d states for each of the spins 11/2(-)..15/2(-) and two 5/2(-)..9/2(-) - states could be established at excitation energies up to approximat e to 1MeV above the Yrast line. With this new data, we are able to com pare the non-Yrast states and their decay properties to the correspond ing states of Xe-125, which had been studied with similar methods in C ologne. The almost one-to-one correspondence between the states of the se neighboring neutron-odd nuclei is a clear indication that their exc itations at low spin remain collective well above the Yrast line.