Possible assignment of chiral twin bands in {sup 188}Ir

High-spin states in the doubly-odd Z=77 nucleus {sup 188}Ir were populated in the {sup 186}W({sup 7}Li,5n) reaction at 52 MeV. Two nearly degenerate {delta}I=1 sequences with the same parity were established. Both bands have been assigned the {pi}h{sub 9/2}x{nu}i{sub 13/2} configuration, based on th...

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Veröffentlicht in:	Physical review. C, Nuclear physics Nuclear physics, 2004-10, Vol.70 (4)
Hauptverfasser:	Balabanski, D.L., Danchev, M., Faculty of Physics, St. Kliment Ohridski University of Sofia, BG-1164 Sofia, Hartley, D.J., Zeidan, O., Zhang Jingye, Riedinger, L.L., Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Barton, C.J., Beausang, C.W., Caprio, M.A., Casten, R.F., Cooper, J.R., Hecht, A.A., Kruecken, R., Novak, J.R., Zyromski, K.E., Zamfir, N.V., Clark University, Worcester, Massachusetts 10610, National Institute for Physics and Nuclear Engineering, Bucharest-Magurele
Format:	Artikel
Sprache:	eng
Schlagworte:	CHIRAL SYMMETRY CHIRALITY E2-TRANSITIONS EXCITATION HIGH SPIN STATES IRIDIUM 188 LITHIUM 7 REACTIONS M1-TRANSITIONS MEV RANGE NUCLEAR PHYSICS AND RADIATION PHYSICS PARITY SPIN TUNGSTEN 186 TARGET
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Zusammenfassung:	High-spin states in the doubly-odd Z=77 nucleus {sup 188}Ir were populated in the {sup 186}W({sup 7}Li,5n) reaction at 52 MeV. Two nearly degenerate {delta}I=1 sequences with the same parity were established. Both bands have been assigned the {pi}h{sub 9/2}x{nu}i{sub 13/2} configuration, based on the systematic behavior of these excitations in the Ir nuclei and on the measured values for the B(M1)/B(E2) ratios, and they are suggested as candidates for a chiral doublet.
ISSN:	0556-2813 1089-490X
DOI:	10.1103/PhysRevC.70.044305