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Observation of five high-spin members of the g9/2f7/2 multiplet in 208Pb.

Authors :: Heusler, A.
Graw, G.
Faestermann, Th.
Hertenberger, R.
Krücken, R.
Scholl, C.
Wirth, H.-F.
von Brentano, P.
Source :: European Physical Journal A -- Hadrons & Nuclei; May2010, Vol. 44 Issue 2, p233-238, 6p, 2 Charts, 5 Graphs
Publication Year :: 2010
Abstract: In the doubly magic nucleus <superscript>208</superscript>Pb , five states are observed at 5648, 5658, 5686, 5694, 5836keV by <superscript>208</superscript>Pb ( p, p′) via isobaric analog resonances in <superscript>209</superscript>Bi . The 5686, 5694, 5836 states with spins 6<superscript>-</superscript>, 7<superscript>-</superscript>, 8<superscript>-</superscript> are shown to contain almost the full strength of the particle-hole configuration g<subscript>9/2</subscript> f<subscript>7/2</subscript> . The 5658 5<superscript>-</superscript> state contains a major g<subscript>9/2</subscript> f<subscript>7/2</subscript> fragment with admixtures of d<subscript>5/2</subscript> f<subscript>5/2</subscript> , d<subscript>5/2</subscript> f<subscript>7/2</subscript> . The 5648, 5649keV states observed in a quintuplet at E<subscript>x</subscript> = 5.63 - 5.65 MeV are preliminarily identified to have spins (4)<superscript>-</superscript> and 6<superscript>+</superscript> to 9<superscript>+</superscript>. The 5648keV (4)<superscript>-</superscript> state contains almost half of the g<subscript>9/2</subscript> f<subscript>7/2</subscript> strength and half of the h<subscript>9/2</subscript> d<subscript>5/2</subscript> strength with admixtures of d<subscript>5/2</subscript> f<subscript>5/2</subscript> , d<subscript>5/2</subscript> p<subscript>3/2</subscript> , d<subscript>5/2</subscript> f<subscript>7/2</subscript> . [ABSTRACT FROM AUTHOR]