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2006年04月10日

【期刊论文】Properties of the πi13/2⊗vi13/2 band in odd-odd 184Au

张玉虎， Y. H. Zhang，， Y. D. Fang， G. de Angelis， N. Marginean， A. Gadea， D. R. Napoli， M. Axiotis， C. Rusu， T. Martinez， H. L. Wang， X. H. Zhou， W. T. Guo， M. L. Liu， Y. X. Guo， X. G. Lei， M. Oshima， and Y. Toh

PHYSICAL REVIEW C 70, 057303 (2004)，-0001，（）：

-1年11月30日

摘要

High-spin level structure in 184Au has been reinvestigated using the multidetector array of GASP via the 159Tbs29Si,4n gd184Au reaction at a beam energy of 140 MeV. The ground-state band and the excited πi13/2⊗vi13/2 2-qp band have been extended up to lower and higher spin states. An upbend has been observed in the excited band at hω～0.25 MeV and is interpreted as resulting from a pair of πh9/2 alignment. This lowfrequency (πh9/2)2 alignment is supported by the measured B(M1)/B(E2) ratios and alignment properties in neighboring odd-A nuclei. The linking transitions between the two bands and to the ground state have been established leading to a firm spin-and-parity assignment for the πi13/2⊗vi13/2 band in 184Au. This result provides strong evidence for the low-spin signature inversion in the πi13/2⊗vi13/2 bands of odd-odd nuclei in the A,180 mass region.

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2006年04月10日

【期刊论文】Observation of signature inversion in odd-odd 178Ir

张玉虎， Y.H. Zhang， a， T. Hayakawa， M. Oshima， Y. Toh， J. Katakura， Y. Hatsukawa， M. Matsuda， N. Shinohara， T. Ishii， H. Kusakari， M. Sugawara， and T. Komatsubara

Eur. Phys. J. A 8, 439-442 (2000)，-0001，（）：

-1年11月30日

摘要

High spin states in 178Ir have been studied via the 152Sm (31P,5nγ) 178Ir reaction through excitation functions, X-γ and γ-γ-t coincidence measurements. According to the band structure characteristics and the measured intraband B(M1)/B(E2) ratios, two rotational bands are identiﬁed and assigned to be associated with the πh9/2⊗νi13/2 and πh11/2⊗νi13/2 conﬁgurations, respectively. Both bands show the signature inversion feature.

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2006年04月10日

【期刊论文】High-spin states of an odd-odd 184Au nucleus

张玉虎， Y H Zhang， Y D Fang， G de Angelis，， N Marginean， A Gadea， D R Napoli， M Axiotis， C Rusu， T Martinez， H LWang， X H Zhou， W T Guo， M L Liu， Y X Guo， X G Lei， MOshima， Y Toh and F R Xu

J. Phys. G: Nucl. Part. Phys. 31 (2005) S1545-S1549，-0001，（）：

-1年11月30日

摘要

High-spin band structures in 184Au have been re-investigated using the multidetector array of GASP following the 149Sm (29Si, 4nγ) 184Au reaction. Four previously observed bands built on prolate configurations have been extended significantly up to high spins and two weakly populated bands are newly identified. Structure properties of these bands are briefly discussed.

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2006年04月10日

【期刊论文】High-spin level scheme of 183Au

张玉虎， L. T. Song，， X. H. Zhou， Y. H. Zhang， G. de Angelis， N. Marginean， A. Gadea， D. R. Napoli， M. Axiotis， C. Rusu， T. Martinez， Y. X. Guo， X. G. Lei， Y. Zheng， and M. L. Liu

PHYSICAL REVIEW C 71, 017302 (2005)，-0001，（）：

-1年11月30日

摘要

High-spin states in 183Au have been studied experimentally using the 159Tb(29Si, 5n)183Au reaction at a beam energy of 140 MeV. Three- or higherfold γ-ray coincidences have been measured using the detector array of GASP. The level scheme of 183Auwas revised and extended.Arotational band proposed as the unfavored signature branch of the πi13/2 band has been observed for 183Au. Interaction properties between the two negative-signature bands of the πh9/2-π7/2 system have been discussed for the light odd-A Au nuclei.

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2006年04月10日

【期刊论文】Search for Signature Inversion in the πil3/2⊗νil3/2 Band in Odd-Odd 178Ir*

张玉虎， ZHANG Yu-Hu， T. Hayakawa， M Oshima， Y. TOh， J. Katakura， Y. Hatsukawa， M Matsuda， N. Shinohara， T. Ishii， H Kusakari， M. Sugawara， T. Komatsubara， K. Furune

CHIN. PHYSLETT. Vol 18．No.10 (2001)，-0001，（）：

-1年11月30日

摘要

The soarch for the πi13/2⊗νi13/2 band in 178Ir has been conducted through the 152Sm (31P, 5nγ)178Ir reaction and thc excitation functions，x-γ and γ-γ-t coincidence mcasurements. Five rotational bands have been nowly identified The low-spin signaturc inversion in the πi13/2⊗νi13/2 band has been confirmed by the observations of linking transitions and signaturc crossing at I=25.5h. The inversion phenonJenon in πh11/2⊗νi13/2, rcho/2⊗νi13/2 and πi13/2⊗νi13/2 structulcs in 178Ir provides a unique testing ground for diffbrent theorctical interpretations.

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