  We study radiation of supersymmetric particles from an Aharonov-Bohm string
associated with a discrete R-symmetry. Radiation of the lightest supersymmetric
particle, when combined with the observed dark matter density, imposes
constraints on the string tension or the freeze-out temperature of the
particle. We also calculate the amplitude for Aharonov-Bohm radiation of
massive spin $3/2$ particles.
