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Title: PRODUCTION OF Be$sup 7$ IN 30-42 Mev He-Ion BOMBARDMENT OF OXYGEN, ALUMINUM, AND COPPER

Journal Article · · Physical Review (U.S.) Superseded in part by Phys.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
;

The production of Be/sup 7/ in targets of oxygen aluminum and copper bombarded with 30- to 42-Mev He ions was studied using radiochemical techniques. At 40-Mev He-ion bombarding energy the formation cross sections are 1.4 mb, 0.22 mb, and 0.018 mb, respectively. For aluminum and oxygen targets the Be/sup 7/ fragments are emitted sharply forward, implying-a direct-interaction mechanism. Estimations of the energies of the Be/sup 7/ fragments, along with the observation that for Al/sup 27/ target the yield of Na/sup 24/ is equal to the yield of Be/sup 7/, suggests that in this particular case interaction involves the pickup of a He/sup 3/ fragment from the nucleus by the impinging He/sup 4/ ion with the deposition of less than 7 Mev of excitation energy in the Na/sup 24/ residual nucleus. (auth)

Research Organization:
Univ. of Washington, Seattle
NSA Number:
NSA-14-004815
OSTI ID:
4192556
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Physical Review (U.S.) Superseded in part by Phys.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, Vol. Vol: 116; Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

PHYSICS
ALPHA PARTICLES- - ALUMINUM- ANGULAR DISTRIBUTION- BEAMS- BERYLLIUM 7- CROSS SECTIONS- ENERGY RANGE- INTERACTIONS- NUCLEAR REACTIONS- PRODUCTION- TARGETS
ALPHA PARTICLES- - ANGULAR DISTRIBUTION- BEAMS- BERYLLIUM 7- CROSS SECTIONS- ENERGY RANGE- INTERACTIONS- NUCLEAR REACTIONS- OXYGEN- PRODUCTION- TARGETS
ALPHA PARTICLES- ALUMINUM 27- BEAMS- BERYLLIUM 7- CROSS SECTIONS- ENERGY RANGE- NUCLEAR REACTIONS- PRODUCTION- SODIUM 24- TARGETS
ALPHA PARTICLES- BEAMS- BERYLLIUM 7- COPPER- CROSS SECTIONS- ENERGY RANGE- NUCLEAR REACTIONS- PRODUCTION- TARGETS
ALPHA PARTICLES- BEAMS- BERYLLIUM 7- CROSS SECTIONS- - ENE