A monocrystal of ^5^9Co as a nuclear orientation thermometer in neutron experiments with oriented targets - Fasoli, U.; Galeazzi, G.; Pavan, P.; Toniolo, D.; Zago, G.; Zannoni, R. (Elsevier)
An apparatus for measuring temperatures in the millikelvin region is described based on the ''deformation effect'' on fast neutron transmission through an aligned ^5^9Co monocrystal, employing a ^2^5^2Cf pill as the neutron source.A statistical accuracy of a few percent in a few minutes is obtainable with a heat input of some tens of pW. The apparatus is suitable in neutron experiments with oriented targets when the gamma-ray background hinders the use of gamma-ray anisotropy thermometers. In these and similar cases, in which the temperature must be held constant for long periods, the large heat capacity of the cobalt sample is not a drawback.
http://linkinghub.elsevier.com/retrieve/pii/0029-554X(80)91101-5
Keywords: ZP; U