Quasielastic proton-nucleus scattering in a relativistic plane-wave impulse approximation

Journal Article · Sun May 01 00:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.37.2032· OSTI ID:5307355

Horowitz, C J; Murdock, D P

Proton-nucleus quasielastic scattering cross sections and spin observables are calculated in a relativistic plane-wave impulse approximation for nuclei from /sup 12/C to /sup 208/Pb at energies of 300 to 800 MeV. Relativistic effects are incorporated by using Dirac spinors with enhanced lower components characterized by an effective mass from 0.8 to 0.9M. The analyzing power is found to decrease significantly from free NN values when relativistic spinors are used. This reduction is in good agreement with data. Little change in polarization transfer coefficients D/sub i//sub '//sub j/ is found at 500 MeV. However, predictions of enhanced D/sub s//sub '//sub s/ and D/sub l//sub '//sub l/ are made at lower energies. Calculations are also presented for (p,n) quasifree charge exchange reactions. Here the analyzing power is almost unchanged but large changes in cross section and polarization transfer coefficients are possible. These changes depend on how pion contributions to the NN amplitudes are treated. Suggestions for future theoretical and experimental work are made.

• Research Organization: Nuclear Theory Center and Department of Physics, Indiana University, Bloomington, Indiana 47405
• OSTI ID: 5307355
• Journal Information: Phys. Rev. C; (United States), Vol. 37:5
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12 TARGET
PROTON REACTIONS
LEAD 208 TARGET
CHARGE-EXCHANGE REACTIONS
QUASI-ELASTIC SCATTERING
ANALYZING POWER
CROSS SECTIONS
EFFECTIVE MASS
IMPULSE APPROXIMATION
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
POLARIZATION
RELATIVITY THEORY
SPIN
SPINORS
ANGULAR MOMENTUM
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
CHARGED-PARTICLE REACTIONS
DIRECT REACTIONS
ENERGY RANGE
FIELD THEORIES
GENERAL RELATIVITY THEORY
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MASS
MEV RANGE
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
QUASI-FREE REACTIONS
SCATTERING
TARGETS
653003* - Nuclear Theory- Nuclear Reactions & Scattering