Increased isomeric lifetime of hydrogen-like Os-192m

doi:10.1103/PhysRevC.91.031301

	Increased isomeric lifetime of hydrogen-like Os-192m
	Akber, A.1; Reed, M. W.1; Walker, P. M.2; Litvinov, Yu. A.3,4; Lane, G. J.1; Kibedi, T.1; Blaum, K.3; Bosch, F.4; Brandau, C.5,6,7; Carroll, J. J.8
刊名	PHYSICAL REVIEW C
	2015-03-27
卷号	91
ISSN号	0556-2813
DOI	10.1103/PhysRevC.91.031301
文献子类	Article
英文摘要	An excited metastable nuclear state of Os-192 in a hydrogen-like charge state has been studied for the first time. It was populated in projectile fragmentation of a Au-197 beam on a Be-9 target with the UNILAC-SIS accelerators at GSI. Fragmentation products in the region of interest were passed through the fragment separator and injected into the experimental storage ring (ESR). Cooling of the injected beam particles enabled Schottky mass spectrometry to be performed. Analysis shows the lifetime of the state to be considerably longer than that of the neutral ion [tau(neut) = 8.5(14) s]; this change is attributed to hindrance of internal conversion in hydrogen-like Os-192. Calculations have been performed to estimate the lifetime, and the result has been compared with that measured experimentally. There is good agreement between the expected [tau(H-like) = 13.0(24) s] and measured lifetimes (tau(rest) = 15.1(-1.3)(+1.5) s) from the internal decay of Os-192m. This provides a test for the reliability of the values obtained from internal conversion coefficient calculations in highly ionized systems and is the first measurement of its kind to be performed using the ESR setup.
资助项目	Science and Technology Facilities Council[ST/G008787/1] ; Science and Technology Facilities Council[ST/J000051/1] ; Science and Technology Facilities Council[ST/L005794/1] ; Science and Technology Facilities Council[ST/L005743/1] ; Science and Technology Facilities Council[ST/J000159/1]
WOS关键词	SCHOTTKY MASS-SPECTROMETRY ; HEAVY-ION STORAGE ; CONVERSION COEFFICIENTS ; COOLER RING ; ESR ; DEPENDENCE ; NUCLEI ; TRAPS ; STATE ; FRS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000351733200001
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47901]
专题	中国科学院近代物理研究所
通讯作者	Akber, A.
作者单位	1.Australian Natl Univ, Dept Nucl Phys, RSPE, Canberra, ACT 0200, Australia 2.Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England 3.Max Planck Inst Kernphys, D-69117 Heidelberg, Germany 4.GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany 5.ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany 6.GSI Helmholtzzentrum Schwerionenforsch, Div Res, D-64291 Darmstadt, Germany 7.Univ Giessen, Inst Atom & Mol Phys, D-35392 Giessen, Germany 8.US Army Res Lab, Adelphi, MD 20783 USA 9.Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England 10.Youngstown State Univ, Youngstown, OH 44555 USA
推荐引用方式 GB/T 7714	Akber, A.,Reed, M. W.,Walker, P. M.,et al. Increased isomeric lifetime of hydrogen-like Os-192m[J]. PHYSICAL REVIEW C,2015,91.
APA	Akber, A..,Reed, M. W..,Walker, P. M..,Litvinov, Yu. A..,Lane, G. J..,...&Yamaguchi, T..(2015).Increased isomeric lifetime of hydrogen-like Os-192m.PHYSICAL REVIEW C,91.
MLA	Akber, A.,et al."Increased isomeric lifetime of hydrogen-like Os-192m".PHYSICAL REVIEW C 91(2015).