EXCITATION CURVES FOR THE REACTIONS Al$sup 27$(n,$alpha$)Na$sup 24$ AND Mg$sup 24$(n,p)Na$sup 2$$sup 4$
Journal Article
·
· Canadian Journal of Physics (Canada)
Excitation curves for the reactions Al/sup 27/(n, alpha )Na/sup 24/ and near-threshold energies to 20.3 Mev. The measurements are relative to the cross section for the reaction S/sup 32/(n,p)P/sup 32/. Monoenergetic neutrons are obtained from the D(d,n)He/sup 3/, T(d,n)He/sup 4/, and T(p,n)He/sup 3/ reactions. Cross sections for both reactions rise above the minimum detectable value of 0.02 mb near 5 Mev and reach maximum values of 126 mb for the Al/sup 27/(n, alpha )Na/ sup 24/ reaction and 205 mb for the Mg/sup 24/(n )Na/sup reaction at 13.5 Mev. Above this energy both cross sections decrease. From the excitation curves, effective crosssection values for a fission-neutron spectrum are calculated as 0.61 plus or minus 0.03 mb for the (n, alpha ) reaction and 1.34 plus or minus 0.07 mb for the (n,p) reaction. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- NSA Number:
- NSA-17-013497
- OSTI ID:
- 4760582
- Report Number(s):
- AECL-1660; 0008-4204
- Journal Information:
- Canadian Journal of Physics (Canada), Journal Name: Canadian Journal of Physics (Canada) Vol. Vol: 41; ISSN CJPHA
- Country of Publication:
- Canada
- Language:
- English
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