Signature inversion in doubly odd {sup124}La.

Journal Article · Mon Jul 01 04:00:00 EDT 2002 · Phys. Rev. C

OSTI ID:949611

Chantler, H J; Paul, E S; Boston, A J; Carpenter, M P; Charity, R; Chiara, C J; Choy, P T. W.; Davids, C N; Devlin, M; Fletcher, A M; Fossan, D B; Jenkins, D G; Kelsall, N S; Koike, T; LaFosse, D R; Nolan, P J; Sarantites, D G; Seweryniak, D; Smith, J F; Starosta, K ; Wadsworth, R; Wilson, A N

High-spin states have been studied in neutron-deficient {sup 124}{sub 57}La{sub 67}, populated through the {sup 64}Zn({sup 64}Zn,3pn) reaction at 260 MeV. The Gammasphere {gamma}-ray spectrometer has been used in conjunction with the Microball charged-particle detector, the Neutron Shell, and the Argonne Fragment Mass Analyzer, in order to select evaporation residues of interest. The known band structures have been extended and new bands found. Most of the bands are linked together, allowing more consistent spin and parity assignments. Comparison of band properties to cranking calculations has allowed configuration assignments to be made and includes the first identification of the g{sub 9/2} proton-hole in an odd-odd lanthanum isotope. Two bands have been assigned a {pi}h{sub 11/2}{circle_times}{nu}h{sub 11/2} structure; the yrast one exhibits a signature inversion in its level energies below I=18.5{Dirac_h}, while the excited one exhibits a signature inversion above I=18.5{Dirac_h}.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; FOR; NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 949611
• Report Number(s): ANL/PHY/JA-42527
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: 1 ; Jul. 2002 Vol. 66; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONFIGURATION
EVAPORATION
LANTHANUM ISOTOPES
NEUTRONS
PARITY
RESIDUES
SPECTROMETERS
SPIN