Quenching of Gamow-Teller strength

Conference · Thu Dec 10 04:00:00 EST 1987 · AIP Conf. Proc.; (United States)

OSTI ID:5462013

Towner,

It is becoming increasingly evident that nuclear Gamow-Teller matrix elements determined from ..beta..-decay and charge exchange reactions are significantly quenched compared to simple shell-model estimates based on one-body operators and free-nucleon coupling constants. Here we will briefly discuss the theoretical origins of this quenching giving examples from three mass regions: (a) in light nuclei near LS-closed shells, such as /sup 16/O and /sup 40/Ca, (b) in heavy nuclei near jj-closed shells, such as /sup 208/Pb, (c) in proton-rich nuclei near shell or sub-shell closures, such aS /sup 100/Sn and /sup 146/Gd.

• Research Organization: Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada K0J 1J0
• OSTI ID: 5462013
• Report Number(s): CONF-870970-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 164:1
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSON-EXCHANGE MODELS
GAMOW-TELLER RULES
ISOBAR MODEL
MATHEMATICAL MODELS
NUCLEAR MODELS
OSCILLATION MODES
PARTICLE MODELS
PERIPHERAL MODELS
RANDOM PHASE APPROXIMATION
SHELL MODELS
SINGLE-PARTICLE MODES