The quasifree ([ital [rvec p]],[ital [rvec n]]) reaction

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.R2162· OSTI ID:5916095

Sams, T ^[1]

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1. Niels Bohr Institute, Blegdamsvej 17, DK-2100 O (Denmark)

The ratio of unnatural to natural parity exchange in quasifree excitation of nuclei is calculated in the eikonal scattering limit. Calculations with and without random phase approximation (RPA) correlations in the nuclear response function are compared with the ratio deduced from a recent ([ital [rvec p]],[ital [rvec n]]) experiment at LAMPF at 495 MeV bombarding energy and 1.7 fm[sup [minus]1] momentum transfer. At small energy transfers the cross section is well described both with and without correlations. In this region, the RPA calculation predicts a strong enhancement of the spin-longitudinal reaction channel which reflects itself in an enhanced ratio of unnatural to natural parity exchange. The spin-transfer data from LAMPF provide no support for the hypothesis of correlations in the spin-longitudinal channel as implied by the RPA calculations.

• OSTI ID: 5916095
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:5; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663300* -- Nuclear Reactions & Scattering
General-- (1992-)
663430 -- Nucleon-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
BEAMS
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIRECT REACTIONS
EIKONAL APPROXIMATION
ELEMENTARY PARTICLES
ENERGY TRANSFER
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PARITY
PARTICLE PROPERTIES
POLARIZATION
POLARIZED BEAMS
PROTON REACTIONS
QUASI-FREE REACTIONS
RANDOM PHASE APPROXIMATION
RESPONSE FUNCTIONS