Title of article
Production cross-sections of light neutron-rich nuclei from 40Ar fragmentation at about I GeV/nucleon
Author/Authors
Ozawa، A. نويسنده , , Bochkarev، O. نويسنده , , Chulkov، L. نويسنده , , Cortina، D. نويسنده , , Geissel، H. نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
-410
From page
411
To page
0
Abstract
High-spin states have been populated in 114 45Xe via the 58Ni(58Ni, 2p) reaction at 210 MeV, using the JUROSPHERE gamma-ray spectrometer to record gamma-ray coincidences. The known level scheme has been significantly extended and includes two positive-parity and three negative-parity structures. At the highest spins, one of the negative-parity bands becomes yrast and shows the characteristics of a smoothly terminating band. Quadrupole moments for two of the bands at high spin have been estimated through a Doppler-broadened lineshape analysis; the terminating band has a reduced quadrupole moment implying that it is not far from full termination into a noncollective oblate state. Extracted B(E1) strengths are discussed in terms of possible octupole collectivity.
Keywords
NUCLEAR REACTIONS 9Be(40Ar, X), E = ~l A GeV , Measured production sigma for mass 10-30 , Semi-empirical parametrization , Deduced particle instability of 26O
Journal title
NUCLEAR & HADRONIC PHYSICS
Serial Year
2000
Journal title
NUCLEAR & HADRONIC PHYSICS
Record number
44679
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