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Mechanism of the (/sup 6/Li, /sup 6/He) reaction at intermediate energies and its suitability as a spin probe

Journal Article · · Phys. Rev. C; (United States)
; ; ; ; ; ; ; ;
Angular distributions have been measured for the (/sup 6/Li, /sup 6/He) reaction on targets of /sup 7/Li, /sup 12,14/C, /sup 26/Mg, and /sup 90/Zr at bombarding energies of 35, 25, and 14 MeV/nucleon. The ratios of observed cross sections for states in /sup 14/N and /sup 7/Be suggest that the reaction mechanism is predominantly one-step at 35 and 25 MeV/nucleon with an increasing contribution from sequential transfer at lower energies. Measured forward-angle cross sections for Gamow-Teller transitions are found to be accurately proportional to the corresponding B(GT) values from ..beta../sup -/ decay or from (p,n) data. This calibration will allow the measurement of spin-transfer strength with the (/sup 6/Li, /sup 6/He) reaction at intermediate energies. One-step distorted-wave Born approximation calculations, which used Yukawa central and r/sup 2/ x Yukawa tensor potentials, are consistent with the data at 35 and 25 MeV/nucleon except for theta/sub c.m./<3/sup 0/, and give a central force strength, V/sub sigma//sub tau/, in reasonable agreement with that obtained in (p,n) studies at similar energies per nucleon.
Research Organization:
National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
OSTI ID:
6004094
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 35:5; ISSN PRVCA
Country of Publication:
United States
Language:
English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ANGULAR DISTRIBUTION
BERYLLIUM 7
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORN APPROXIMATION
CARBON 12 TARGET
CARBON 14 TARGET
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
DWBA
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
GAMOW-TELLER RULES
HEAVY ION REACTIONS
HELIUM 6
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
LITHIUM 6 REACTIONS
LITHIUM 7 TARGET
MAGNESIUM 26 TARGET
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NITROGEN 14
NITROGEN ISOTOPES
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
POTENTIALS
RADIOISOTOPES
STABLE ISOTOPES
TARGETS
TENSOR FORCES
YUKAWA POTENTIAL
ZIRCONIUM 90 TARGET