REACTIONS OF ARGON-40 WITH ALPHA-PARTICLES
Technical Report
·
OSTI ID:4227033
Excitation functions for the ( alpha ,p) and ( alpha ,pn) reactions on Ar/sup 40/ were measured by the activation method using a ""modified stacked- foil"" technique. The bombardments were made with an alpha-particle beam from the 160 cm INSJ cyclotron. The beam was collected in a Faraday cup and measured by a current integrator. The disintegration rates of product nuclei were determined by 4 pi beta -counting. The results were compared with the predictions based on the statistical model of nuclear reaction. The fits with theory are fairly poor for the magnitudes of cross section, the predicted values being considerably tco large. The excitation function for the ( alpha ,p) reaction decreases rather slowly above the separation energy of a secondary particle emission. These behaviors may suggest a significant contribution of some reaction mechanism without passing through the compound nucleus formation process. (auth)
- Research Organization:
- Tokyo Univ. Inst. for Nuclear Study
- NSA Number:
- NSA-14-002965
- OSTI ID:
- 4227033
- Report Number(s):
- NP-8032
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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