Polarization transfer in (p, n) reactions

1987 ◽  
Vol 65 (6) ◽  
pp. 557-565 ◽  
Author(s):  
T. N. Taddeucci
Keyword(s):  
Nuclear Structure ◽  
Impulse Approximation ◽  
Intermediate Energy ◽  
Polarization Transfer ◽  
Final States ◽  
High Excitation ◽  
Distorted Wave ◽  
Indiana University ◽  
Excitation Energies ◽  
Distorted Wave Impulse Approximation

Polarization-transfer studies for (p, n) reactions with normally polarized (N-type) beams have been pursued at the Indiana University Cyclotron Facility, Bloomington, IN, since 1983. A variety of targets having values of A ranging from 2 to 90 have been studied at 0° for bombarding energies between 80 and 200 MeV. Transitions to well-resolved final states in the lighter nuclei have yielded data that lend plausibility to distorted-wave impulse approximation interpretations of intermediate-energy nucleon–nucleus reactions. Measurements on heavier nuclei have revealed interesting nuclear-structure effects at high excitation energies.

Photoproduction of positive pions from 16O at medium energies

1980 ◽  
Vol 58 (8) ◽  
pp. 1151-1162 ◽  
Author(s):  
V. Devanathan ◽  
V. Girija ◽  
G. N. Sivarama Prasad
Keyword(s):  
Experimental Data ◽  
Nuclear Structure ◽  
Cross Sections ◽  
Impulse Approximation ◽  
Wave Functions ◽  
Fair Agreement ◽  
Free Nucleon ◽  
Distorted Wave ◽  
Distorted Wave Impulse Approximation ◽  
Γ Ray

The reaction 16O(γ,π+)16N has been studied in the distorted wave impulse approximation (DWIA) using the free-nucleon photopion amplitude. The nuclear distortion effects on the emitted pion and also the effect of nuclear structure are investigated in detail. The effect of nuclear distortion is found to be small at lower energies but is of great importance resulting in large absorption of pions around the (3,3) resonance. Using realistic nuclear wave functions, it is found that the DWIA yields cross sections in fair agreement with the experimental data at γ-ray energies above 230 MeV but higher values at lower energies.

Analyzing powers for theC12(p→,p′)C12reaction at 120 MeV and a test of the distorted-wave impulse approximation

1981 ◽  
Vol 24 (5) ◽  
pp. 1834-1843 ◽  
Author(s):  
J. R. Comfort ◽  
G. L. Moake ◽  
C. C. Foster ◽  
P. Schwandt ◽  
C. D. Goodman ◽  
...  
Keyword(s):  
Impulse Approximation ◽  
Distorted Wave ◽  
Analyzing Powers ◽  
Distorted Wave Impulse Approximation

Distorted-wave impulse-approximation evaluation of sum rule for hypernuclear formation in forward (K−,π−)

1978 ◽  
Vol 17 (4) ◽  
pp. 1501-1504 ◽  
Author(s):  
G. N. Epstein ◽  
F. Tabakin ◽  
C. M. Vincent ◽  
A. Gal ◽  
L. S. Kisslinger
Keyword(s):  
Impulse Approximation ◽  
Distorted Wave ◽  
Sum Rule ◽  
Distorted Wave Impulse Approximation

Distorted-wave impulse approximation and coupled-channels analysis of inelastic pion scattering fromO18

1987 ◽  
Vol 35 (6) ◽  
pp. 2197-2211 ◽  
Author(s):  
S. Chakravarti ◽  
D. Dehnhard ◽  
M. A. Franey ◽  
S. J. Seestrom-Morris ◽  
D. B. Holtkamp ◽  
...  
Keyword(s):  
Impulse Approximation ◽  
Distorted Wave ◽  
Pion Scattering ◽  
Coupled Channels ◽  
Distorted Wave Impulse Approximation
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