First identification of excited states in {sup 169}Ir

Journal Article · Tue May 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.054321· OSTI ID:20995283

Sandzelius, M; Cederwall, B; Andgren, K; Baeck, T; Hadinia, B; Johnson, A; Lagergren, K; Wyss, R ^[1]; Scholey, C; Eeckhaudt, S; Grahn, T; Greenlees, P T; Jones, P M; Julin, R; Juutinen, S; Kettunen, H; Leino, M; Leppaenen, A -P; Nieminen, P; Pakarinen, J ^[2]

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1. Department of Physics, Royal Institute of Technology, SE-10691 Stockholm (Sweden)
2. Department of Physics, University of Jyvaeskylae, P.O. Box 35 (YFL), FIN-40014 Jyvaeskylae (Finland)

Gamma rays populating the {alpha}-decaying isomeric state in {sup 169}Ir have been observed for the first time. The experiment employed the recoil-decay tagging method using the JUROGAM {gamma}-ray spectrometer, the RITU gas-filled recoil separator and the GREAT spectrometer located at the RITU focal plane. The {gamma}-ray cascade feeding the isomeric {alpha}-decaying state exhibits a rotational structure consistent with a h{sub 11/2} proton coupled to a triaxially deformed core. The experimental results are compared with predictions from total Routhian surface calculations.

• OSTI ID: 20995283
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
EXCITED STATES
GAMMA RADIATION
GAMMA SPECTROMETERS
IRIDIUM 169
PROTONS