Liquid xenon calorimeter for observation of cosmic line gamma-rays in the GeV region - Doke, T.; Kikuchi, J.; Shibamura, E.; Masuda, K.; Kasahara, K.; Muraki, Y. (Elsevier)
A liquid xenon calorimeter designed on the basis of a new principle has been proposed to be used for observing cosmic line gamma-rays in the GeV region. This calorimeter has a geometric factor of 1 m^2 sr or more, an energy resolution of the order of 0.1 % for GeV gamma-rays; and an angular resolution of about 1 degree. These characteristics satisfy most of the conditions theoretically required for observation of line gamma-rays produced by pair annihilation of heavy majorana fermions in the galactic halo.
http://dx.doi.org/10.1016/0920-5632(89)90049-2
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