Pulsed Neutron Measurement Of The Diffusion Parameters In Ordinary Ice As A Function Of Temperature PDF Download

The method of time-dependent neutron diffusion measurements as a means to determine the diffusion parameters in moderators is by now well established through the work of numerous investigators [l-8] who have worked with a number of materials including H20, D20, Be, graphite, and others. In particular, light water has been investigated by Von Dardel and Sj & oumlt;strand [9], A.V. ANTONOV et al. [10, 11], Dio and Schopper [12], BracciI and Coceva [13], Lopez and Beyster [14], and K & uumlt;chle [15]. In Fon Dardel's first paper on the method [1] a crude measurement of the temperature effect in ice is given, and Antonov [11] reports a measurement at -80°C and at the temperature of liquid nitrogen ( -196°C).