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Published March 1, 1982 | public
Journal Article Open

Test of time-reversal invariance in 131Xe


An experiment has been performed to test the time-reversal symmetry in the emission of the mixed E2 and M1 364 keV γ transition in 131Xe. The phase angle η between the multipole transition amplitudes was measured by observing the angular distribution of the linear polarization of the γ ray emitted from a 131I source polarized at low temperature (30 mK obtained with a dilution refrigerator). A Compton polarimeter was used to measure linear polarization. The 131Xe transition was selected to minimize atomic final state effects which simulate time-reversal violation. A value sinη=(-1.1±1.1)×10^-3 was obtained for the transition, consistent with time-reversal invariance.

Additional Information

©1982 The American Physical Society. Received 3 August 1981. We wish to acknowledge the assistance of N.H. Kwong and E. Redden with the experiment. Thanks are due to P. Herczeg and P. Vogel for many helpful discussions. This work was supported by the U.S. Department of Energy under Contract No. DE-AT03-81-ER40002.


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