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NUCLEON AND NUCLEAR CROSS SECTIONS FOR POSITIVE PIONS AND PROTONS ABOVE 1.4 Bev/c

Journal Article · · Physical Review (U.S.) Superseded in part by Phys.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
Total ( pi /sup +, p) and (p,p) cross sections in the momentum range 1.4 to 4.0 Bev/c are presented. These measurements, with an accuracy of approximately 2%, were made at the Berkeley Bevatron by using counter techniques. Pions were distinguished from protons by means of a gasfilled Cherenkov counter. The ( pi /sup +,p) total cross section was found to be almost constant above 2.0 Bev/c at a value near 29 mb. The (p,p) cross section decreases gradually from 47.5 mb to 41.7 mb over the momentum range covered. Transmission measurements of pi /sup +/-nucleus and p-nucleus cross sections in both good and poor geometry were made at 3.0 Bev/c. Results are compared with the predictions of the optical model. An essentially exact solution of the wave equation for a potential well with a diffuse edge was used. The values of the imaginary part of the optical potential that best fit the experimental data are in good agreement with the predicted values. No strong conclusion regarding the real part of the potential was possible. Absorption and total elastic scattering cross sections for Be, C, Al, and Cu are presented. (auth)
Research Organization:
Univ. of California, Berkeley
NSA Number:
NSA-16-009467
OSTI ID:
4813798
Report Number(s):
UCRL-9497(Rev.); 0031-899X
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Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 125; ISSN PHRVA
Country of Publication:
United States
Language:
English

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