Two Coils Resonant Ramsey's Method for the Measurement of Time Reversal Invariance Violation in Neutron Transmission.
It is proposed within the framework of Ramsey's method to register two-dimensional spectra, depending on the neutron phase and neutron energy, for measuring parity (P) and time (T) violating amplitudes of the interaction of polarized neutrons with polarized (139)La nuclei in region of the p-wave resonance. The form of the phase spectrum and corresponding expressions for the asymmetries are obtained on the basis of a formalism of a spin density matrix. It is shown that the ratio of the P,T,-violating to P-violating imaginary amplitudes can be obtained from the measurements of the neutron phase spectrum with polarized and unpolarized (139)La target.
St. Petersburg Nuclear Physics Institute RAD, 188350, Gatchina, Leningrad District, Russia.
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Loukachevitch
St. Petersburg Nuclear Physics Institute RAD, 188350, Gatchina, Leningrad District, Russia.
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Aldushchenkov
Ramsey’s method; T-violation; asymmetries; density matrix; evolution operators; scattering amplitude