Spin precession of channeled particles in bent crystals has been observed for the first time. Polarized SIGMA+ were channeled using bent Si crystals. These crystals provided an effective magnetic field of 45 T which resulted in a measured spin precession of 60-degrees +/- 17-degrees. This agrees with the prediction of 62-degrees +/- 2-degrees using the world average of SIGMA+ magnetic moment measurements. This new technique gives a SIGMA+ magnetic moment of (2.40 +/- 0.46 +/- 0.40),mu(N), where the quoted uncertainties are statistical and systematic, respectively. We see no evidence of depolarization in the channeling process.
CHEN, D,ALBUQUERQUE, IF,BAUBLIS, VV,et al. UST OBSERVATION OF MAGNETIC-MOMENT PRECESSION OF CHANNELED PARTICLES IN BENT CRYSTALS[J]. PHYSICAL REVIEW LETTERS,1992,69(23):3286-3289.
CHEN, D.,ALBUQUERQUE, IF.,BAUBLIS, VV.,BONDAR, NF.,CARRIGAN, RA.,...&ZHONG, YY.(1992).UST OBSERVATION OF MAGNETIC-MOMENT PRECESSION OF CHANNELED PARTICLES IN BENT CRYSTALS.PHYSICAL REVIEW LETTERS,69(23),3286-3289.
CHEN, D,et al."UST OBSERVATION OF MAGNETIC-MOMENT PRECESSION OF CHANNELED PARTICLES IN BENT CRYSTALS".PHYSICAL REVIEW LETTERS 69.23(1992):3286-3289.