An investigation of the deuteron-nucleus tensor interaction in sup 90 Zr( rvec d , rvec d ) sup 90 Zr elastic scattering

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1990

OSTI ID:7234767

Abbott, D J

An investigation of the role of the deuteron-nucleus tensor interaction is made through measurement of angular distributions of the cross section, analyzing powers and the polarization transfer observable (PTO) 3K{sub y}{sup z}{prime}{sup z}{prime} + K{sub y}{sup z}{prime}{sub y}{sup z}{prime} for deuteron elastic scattering from {sup 90}Zr at 15 MeV. Two compact and efficient deuteron polarimeters based on the {sup 3}He(d,p){sup 4}He reaction were designed and built to perform the polarization transfer measurements. The observable K{sub y}{sup z}{prime}{sup z}{prime} proved to be very sensitive to the presence of a T{sub {tau}}-type tensor interaction and also to provide information which cannot be obtained through measurement of tensor analyzing powers. The measurement of PTO and of the tensor analyzing power A{sub xx} provide a particularly effective means of parameterizing the tensor interaction. Phenomenological optical model calculations give a real T{sub {tau}} potential which differs significantly from folding model predictions, in that it is weaker and predominantly surface-peaked. The imaginary T{sub {tau}} potential, however, is in qualitative agreement with the folding model. In addition to the optical model analysis, finite-range coupled-channels calculations were performed coupling the three most strongly populated {sup 90}Zr(d,p){sup 91}Zr states to the elastic channel in order to gauge the contribution of the (d,p) channel to the deuteron-nucleus tensor interaction. Coupling effects on the observables were found to be small and equivalent to that of an imaginary T{sub {tau}} tensor potential 1/5 of that used in the optical model analysis.

• Research Organization: North Carolina Univ., Chapel Hill, NC (United States)
• OSTI ID: 7234767
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DEUTERON REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
OPTICAL MODELS
POTENTIALS
SCATTERING
TARGETS
TENSOR FORCES
ZIRCONIUM 90 TARGET