Comparison of polarization and analyzing power for the 15N(p, n)15O reaction
The analyzing power Ay(θ) and polarization Py(θ) for the 15N(p, n0)15O reaction have been measured for Ep = 4.5-11.3 MeV. The values of the two observables are nearly the same above 11 MeV, where a "quasi-elastic" view of the (p, n) reaction to the analog state should be applicable. Below 10 MeV, however, large spin-flip amplitudes and isospin-mixing ratios provide the two major conditions needed to obtain Py(θ) ≠ Ay(θ), and dramatic differences between the two observables are observed. The size of the differences and their dependence on energy are similar to the results predicted by shell-model calculations. The Py(θ) and Ay(θ) measurements have been combined with existing cross-section data to provide information about spin-flip processes. We also comment on the connection between comparisons of Py (θ) and Ay (θ) in charge-symmetric (p, n) reactions and the recent controversial measurements of a difference between the values of Py(θ) for a reaction and Ay(θ) for the inverse reaction. © 1983.
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- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5106 Nuclear and plasma physics
- 5101 Astronomical sciences
- 0206 Quantum Physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0201 Astronomical and Space Sciences
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5106 Nuclear and plasma physics
- 5101 Astronomical sciences
- 0206 Quantum Physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0201 Astronomical and Space Sciences