M. L. Seely

Test of parity-conserving time-reversal invariance using polarized neutrons and nuclear spin aligned holmium.

A test of parity-conserving, time-reversal noninvariance (PC TRNI) has been performed in 5.9 MeV polarized neutron transmission through nuclear spin aligned holmium. The experiment searches for the T-violating fivefold correlation via a double modulation technique{emdash}flipping the neutron spin while rotating the alignment axis of the holmium. Relative cross sections for spin-up and spin-down neutrons are found to be equal to within 1.2{times}10{sup {minus}5} (80{percent} confidence). This is a two orders of magnitude improvement compared to traditional detailed balance studies of time reversal, and represents the most precise test of PC TRNI in a dynamical process, to our knowledge. {copyright} {ital 1997} {ital The American Physical Society}

Measurements of the total cross section for the scattering of polarized neutrons from polarized {sup 3}He

Measurements of polarized-neutron--polarized

The scattering of polarized neutrons from statically polarized solid 3He

{mathrm{ensuremath{-}}}^{3}

An experimental test of parity‐even time reversal invariance with MeV neutrons

He scattering are reported. The target consisted of cryogenically polarized solid

A polarized solid 3He target for neutron transmission experiments

^{3}mathrm{He}

Testing P‐even time reversal invariance with MeV neutrons

, with thickness 0.04 atom/b and polarization ensuremath{sim}0.4. Polarized neutrons were produced via the

Measurement of the polarized neutron—polarized 3He total cross section

^{3}mathrm{H}

A statically polarized solid 3He Target

(pensuremath{rightarrow},nensuremath{rightarrow}

New measurements of spin-dependent n-p cross sections

{)}^{3}

Polarization transfer in the {sup 3}H({rvec p},{rvec n}){sup 3}He reaction and the 0{sup {minus}} level in {sup 4}He

He or