Experimental Measurement of the Slowing-Down Time Distribution for Neutrons in Water
- 1 September 1957
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 2 (5) , 631-639
- https://doi.org/10.13182/nse57-a25430
Abstract
Fast neutrons are produced inside a water moderator by a Po-α-Be source used effectively as a pulsed neutron source. The slowing-down time to the Cd edge is measured with a BF3 proportional counter used with a cadmium difference technique. The mean slowing down time to 0.35 ev, and the variance thereof, are found to be 5.2 μsec and 8.0 μsec2, respectively. It is shown that this is in reasonable agreement with the results of a Monte Carlo calculation, provided collisions are considered to involve whole H2O molecules when the neutron energy falls below about 1.6 ev.Keywords
This publication has 5 references indexed in Scilit:
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