(He$sup 4$,Be$sup 7$) REACTION IN MAGNESIUM, ALUMINUM, TITANIUM, COBALT, AND COPPER FROM THRESHOLD TO 42 MEV
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
Cross sections for the production of Be/sup 7/ in the helium ion bombardment of Mg, Al, Ti, Co, and Cu were measured in the 30- to 42-Mev energy range. The excitation functions for these reactions are presented. A study of the bulk (0 to 90 deg; 90 to 180 deg) laboratory angular distributions, by the catcher foil technique, of the Be/sup 7/ nuclei emerging from 2.0 and 1.85 mg/cm/ sup 2/ magnesium targets and an examination of the approximate range-energy curves for the Be/sup 7/ particles in aluminum and magnesium indicated that the reaction proceeds through a compound nucleus. The experimental excitation function for the Al/sup 27/(He/sup 4/,Be/sup 7/) Na/sup 24/ reaction was compared with calculations based on the nuclear evaporation model. The cross sections for the production of Na/sup 24/ and Be/sup 7/ in the helium-ion bombardment of aluminum are contrasted, and the difference between the yields leads to an excitation function for the (He/sup 4/,He/sup 3/He/sup 4/) reaction. (auth)
- Research Organization:
- Washington State Univ., Pullman
- NSA Number:
- NSA-15-006836
- OSTI ID:
- 4120835
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 120; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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