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On the mixing strength in the two lowest 0- states in 208Pb

A. Heusler, G. Graw, R. Hertenberger, F. Riess, H. -F. Wirth, R. Kruecken, P. von Brentano

nucl-exarXiv:nucl-ex/0611013

Abstract

With a resolution of 3 keV, the two lowest 0- states in 208Pb are identified by measurements of the reaction 207Pb(d, p) with the Muenchen Q3D magnetic spectrograph in a region where the average level spacing is 6 keV. Precise relative spectroscopic factors are determined. Matrix elements of the residual interaction among one-particle one-hole configurations in a two-level scheme are derived for the two lowest 0- states in 208Pb. The off-diagonal mixing strength is determined as 105 +-10(experimental) +-40(systematic) keV. Measurements of the reaction 208Pb(p,p') via isobaric analog resonances in 209Bi support the structure information obtained.

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