Forbidden transitions in the $sup 48$Ca(d,p)$sup 49$Ca reaction

Journal Article · Mon Sep 01 04:00:00 EDT 1975 · Phys. Rev., C, v. 12, no. 3, pp. 827-844

OSTI ID:4145911

Metz, W D; Callender, W D; Bockelman, C K

In a measurement of the angular distribution of proton groups from the $sup 48$Ca(d,p)$sup 49$Ca reaction at E/subd/=20 MeV, particular emphasis is placed on the observation of seven weak transitions to states below 5 MeV excitation. These distributions are analyzed using distorted-wave Born- approximation (DWBA) parameters fixed by fitting, at E/subd/=13.0, 16.0, and 19.3 MeV, the angular distributions of the elastically scattered deuterons and the protons populating the single-particle 2p$sub 3$$/$$sub 2$, 2p$sub 1$$/$$sub 2$, and 1f$sub 5$$/$$sub 2$ states. The DWBA model also fits the (d,p) data of other investigators at E/subd/=7.0 and 10.0 MeV. The same model is then applied to the seven weak transitions, for which earlier data are available at 7.5 and 10.0 MeV in addition to the new E/subd/=20 MeV data. New partial angular distributions at 9.0 MeV are helpful in resolving some discrepancies. For three of the weak transitions, older l assignments are confirmed, for two of them new l assignments are made, and for two transitions the observed behavior is incompatible with any reasonable DWBA model. All seven transitions can be explained as populating 2p- 1h states formed by coupling a neutron to excited states of the $sup 48$Ca core.

• Research Organization: Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520
• NSA Number: NSA-33-004379
• OSTI ID: 4145911
• Journal Information: Phys. Rev., C, v. 12, no. 3, pp. 827-844, Journal Name: Phys. Rev., C, v. 12, no. 3, pp. 827-844; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

642403*
ANGULAR DISTRIBUTION-- CALCIUM 48-- CROSS SECTIONS-- DEUTERON REACTIONS-- DWBA-- MEV RANGE 01-10-- MEV RANGE 10-100-- OPTICAL MODELS-- PROTONS-- STRIPPING
FORBIDDEN TRANSITIONS-- SHELL MODELS
N68531* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
39 <= A <= 58--Energy Levels & Transitions
N68551 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
39 <= A <= 58--Nuclear Reactions & Scattering