Study of parity and time reversal violation in neutron-nucleus interactions

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:10115388

Yen, Yi-Fen; Bowman, J D; Frankle, C M ^[1]; Crawford, B E ^[2]

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1. Los Alamos National Lab., NM (United States)
2. Duke Univ., Durham, NC (United States)

The parity and time-reversal symmetries can be studies in neutron-nucleus interactions. Parity non-conserving asymmetries have been observed for many p-wave resonances in a compound nucleus and measurements were performed on several nuclei in the mass region of A{approximately}100 and A{approximately}230. The statistical model of the compound nucleus provides a theoretical basis for extracting mean-squared matrix elements from the experimental asymmetry data, and for interpreting the mean-squared matrix elements. The constraints on the weak meson-exchange couplings calculated from the compound-nucleus asymmetry data agree qualitatively with the results from few-body and light-nuclei experiments. The tests of time-reversal invariance in various experiments using thermal, epithermal and MeV neutrons are being developed.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10115388
• Report Number(s): LA-UR--94-4242; CONF-9409103--14; ON: DE95005158
• Country of Publication: United States
• Language: English

Related Subjects

662120
662340
663430
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPOUND NUCLEI
HADRON INTERACTIONS
MATRIX ELEMENTS
NEUTRON REACTIONS
NUCLEON-INDUCED REACTIONS AND SCATTERING
P INVARIANCE
SYMMETRY BREAKING
SYMMETRY
CONSERVATION LAWS
CURRENTS AND THEIR PROPERTIES
T INVARIANCE
TESTING