DIFFERENTIAL CROSS SECTIONS FOR THE Be$sup 9$(He$sup 3$,p)B$sup 11$ REACTION

Journal Article · Mon Dec 14 23:00:00 EST 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.116.1585· OSTI ID:4208601

Wolicki, E A; Holmgren, H D; Johnston, R L; Illsley, E G

ABS>The differential cross sections for the six highest energy proton groups from the Be/sup 9/(He/sup 3/,p)B/sup 11/ reaction were meas- . ured as a function of angle at a bombarding energy of 4.5 Mev. For the five highest energy groups, the cross sections are largest in the forward direction and are not symmetric about 90 deg . For all six proton groups, yields observed at large angles to the incident beam direction are comparable to the forward yields. A strong maximum in the backward direction is observed for the third excited state proton group. At 4.5 Mev, the total cross sections are 11.5 millibarns for the ground-state proton group and 7.4 millibarns for the first excited state proton group. For the proton groups leaving B/sup 11/ in the ground and first excited states, differential cross sections were measured at six angles as a function of bombarding energy in the range from 1.8 to 5.0 Mev. In each case, the total cross section for the reaction shows no resonances. The change in the angular distributions which may be interred from these yield curves is seen to proceed in a gradual number with increasing bombarding energy. Differential cross sections for the second and third excited state proton groups were measured at 7 and 90 deg in the bombarding energy interval from 3.0 to 5.0 Mev. The observed characteristics for this reaction taken together indicate that direct interactions are important. (auth)

• Research Organization: U.S. Naval Research Lab., Washington, D.C.
• NSA Number: NSA-14-010085
• OSTI ID: 4208601
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 116; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BEAMS
BERYLLIUM 9
BORON 11
CROSS SECTIONS
DIAGRAMS
ENERGY
ENERGY LEVELS
ENERGY RANGE
HELIUM 3
INTERACTIONS
MEASURED VALUES
NUCLEAR REACTIONS
PHYSICS
PROTONS
RESONANCE