A Level-Structure Study of ^<108>Ag and ^<108>Ag with the(p,nγ)Reactions
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概要
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Properties of excited states in ^<108>Ag and ^<110>Ag were studied using the ^<108>Pd(p, ny)^<108>Ag and ^<110>Pd(p, ny) ^<110>Ag reactions. The low-lying level schemes of ^<108>Ag and ^<110>Ag were built from the y-ray excitation functions. Spins were assigned by comparing the measured y-ray angular distributions ans excitation functions with predictions of the statistical compound-nucleus model. The following spin-parity assingments were obtained for the levels and nuclei indicated: 192.7 keV, 1^+ or (2^+); 206.2keV, 2^+;215.1keV, 3^+294.5keV, 2^<(+)>;324.4keV, 3^+;338.4keV, 3^- and 379.4keV, 1^- for ^<108>Ag and 118.7keV, 3^+;191.2keV, 3;198.3keV, 2 and 267.0keV, (0, 1, 2) for ^<110>Ag. With the methods of pulsed-beam delayed coincidence and pulsed-beam DPAD, lifetimes and g-factors of isomeric states in both nuclei were measured. The results are T_<1/2>=45.8±0.7 ns and g=+1.301±0.011 for the 215.1-keV state of ^<108>Ag and T_<1/2>=36.7±0.7 ns and g=+1.242±0.012 for the 118.7-keV state of ^<110>Ag. NUCLEAR REACTIONS: ^<108>Pd(p, ny), E_p=2.6-3.95MeV and ^<110>Pd(p, ny), E_p=1.6-3.95MeV; measured σ(E; E_y, θ_y), E_y, I_y. Enriched targets. ^<108>Ag and ^<110>Ag deduced levels, J, π, y-mixing ratio, T_<1/2>, g.
- 1976-12-15
著者
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HATTORI Toshiyuki
Department of Applied Physics, Tokyo Institute of Technology
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ADACHI Minoru
Department of Applied Physics, Tokyo Institute of Technology
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TAKETANI Hiroshi
Department of Applied Physics, Tokyo Institute of Technology
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Adachi Minoru
Department Of Applied Physics Tokyo Institute Of Technology
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Hattori Toshiyuki
Department Of Applied Physics Tokyo Institute Of Technology:(present Address) Institute For Nuclear
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Hattori T
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Taketani H
Department Of Applied Physics Tokyo Institute Of Technology
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Taketani Hiroshi
Department Of Applied Physics Tokyo Institute Of Technology
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Hattori Toshiyuki
Department Of Applied Physics Tokyo Institute Of Technology
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Adachi Minoru
Department of Applied Physics,Tokyo Institute of Technology
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