Compound-nuclear tests of time reversal invariance in the nucleon-nucleon interaction
The theory for the effects of time-reversal noninvariance (TRNI) in complex systems is reviewed. Applied to the compound-nuclear data for energy-level, width and cross-section fluctuations (the latter for detailed-balance pairs of reactions proceeding through the compound nucleus) this gives bounds on multiparticle TRNI Hamiltonian matrix elements. Using a fluctuation-free form of statistical spectroscopy the results are reduced to bounds on ..cap alpha.., the relative magnitude of the TRNI nucleon-nucleon interaction. The level and width analyses for heavy nuclei gave ..cap alpha.. less than or equal to 2 x 10/sup -3/ at high (approx.99%) statistical confidence; preliminary calculations for detailed balance with /sup 24/Mg(..cap alpha..,p)/sup 27/Al and its inverse gives ..cap alpha.. less than or equal to 4 x 10/sup -3/ at the same high confidence, but less than or equal to0.2 x 10/sup -3/ at 80% confidence. Suggestions are made about experiments which should yield sharper bounds. 28 refs., 1 tab.
- Research Organization:
- Rochester Univ., NY (USA). Dept. of Physics and Astronomy
- DOE Contract Number:
- AC02-76ER02171
- OSTI ID:
- 5855321
- Report Number(s):
- DOE/ER/02171-225; CONF-8704152-3; UR-1018; ON: DE87014044
- Resource Relation:
- Conference: Workshop on tests of time reversal invariance in neutron physics, Chapel Hill, NC, USA, 17 Apr 1987; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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STATISTICAL MODELS
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URANIUM 236
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