The Problem Of Measuring The Absolute Yield Of 14 Mev Neutrons By Means Of An Alpha Counter
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The Problem of Measuring the Absolute Yield of 14-Mev Neutrons by Means of an Alpha Counter
The assumptions used to derive the total neutron yield per detected alpha particle (from the D-T reaction) which were derived in an earlier report are reexamined in the light of additional experimental information. It is concluded that for an alpha counter at 90 deg to the incident beam direction the assumptions introduce practically no difficulties. Therefore, for precise monitoring in the absence of certain target information it is recommended that this configuration be used. For counters at angles different from 90 deg, nonuniformity of target loading contributes the most serious error to the computed yield. (auth).