$sup 208$Pb($sup 16$O,$sup 15$O)$sup 209$Pb reaction

Journal Article · Mon Sep 01 04:00:00 EDT 1975 · Phys. Rev., C, v. 12, no. 3, pp. 894-900

OSTI ID:4144933

Becchetti, F D; Harvey, B G; Kovar, D; Mahoney, J; Maguire, C; Scott, D K

The neutron levels in $sup 209$Pb have been studied with the $sup 208$Pb($sup 16$O,$sup 15$O) reaction at a bomdarding energy of 139 MeV. Spectroscopic factors (S) have been deduced using a finite-range distorted-wave Born approximation (DWBA) with recoil. The 2g$sub 9$$/$$sub 2$, 1i$sub 11$$/$$sub 2$, 2g$sub 7$$/$$sub 2$, and 3d$sub 3$$/$$sub 2$ levels are found to have S approximately-greater-than 0.9 while S approx. = 0.7 for the 1j$sub 15$$/$$sub 2$ level at 1.4 MeV excitation. Evidence is found for other 1j$sub 15$$/$$sub 2$ fragments being at 3.05 MeV and approx. 3.8 MeV with S approx. = 0.08 and 0.26, respectively, which would place the centroid of the 1j$sub 15$$/$$sub 2$ level at E/ subx/ approx. = 2.2 MeV. DWBA predicts a shift in the maxima of the angular distributions as a function of Q value which is not observed experimentally. A comparison with the proton transfer reaction $sup 208$Pb($sup 16$O,$sup 15$N)$sup 209$Bi has been used to deduce the geometrical parameters of a neutron shell model potential appropriate for nuclei with A approximately-greater-than 200. The parameters of this Wood-Saxon potential are: V/subR/=-50.5 MeV,r/subR/=1.19 fm, a/subR/=0.75 fm, V)=-5.5 MeV, r)=1.01 fm, and a)=0.75 fm.

• Research Organization: Cyclotron Laboratory, Department of Physics, The University of Michigan, Ann Arbor, Michigan 48104 and Lawrence Berkeley Laboratory, Berkeley, California 94720
• NSA Number: NSA-33-004446
• OSTI ID: 4144933
• Journal Information: Phys. Rev., C, v. 12, no. 3, pp. 894-900, Journal Name: Phys. Rev., C, v. 12, no. 3, pp. 894-900; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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