NUCLEON-NUCLEON INTERACTIONS AND POLARIZATION OF HIGH-ENERGY PROTONS ELASTICALLY SCATTERED FROM CARBON

Journal Article · Fri Aug 15 04:00:00 EDT 1958 · Physical Review (U.S.) Superseded in part by Phys.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.111.1173· OSTI ID:4292539

Ohnuma, S

The transition matrix element in momentum space derived by Riesenfeld and Watson was used to calculate the polarization and the triple-scattering parameter BETA of high-energy protons elastically scattered at small angles from carben. As the nucleon-nucleon phase shifts which represent two-body interactions, those by Signell and Marshak, by Gammel and Thaler, and by feshbach and Lomon were considered. In evaluating nuclear as well as Coulomb scattering amplitudes, the first Born approxlmation was employed with the assumption that, in carbon, the distribution of protons is equal to that of neutrons. Final results are then independent of the assumed distribution of nucleons. It was found that, while one cannot discriminate between Signell-Marshak and Gammel- Thaler phase shifts, both of them being in semiquantitative agreement with experimental dala, Feshbach-Lomon phase shifts may be ruled out because of the wrong sign of the resulting BETA . Since only the first-order transition matrix element in momentum space was used, the calculation does not depend on the optical model potential in the usual sense. (auth)

• Research Organization: Yale Univ., New Haven
• NSA Number: NSA-12-017861
• OSTI ID: 4292539
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 111; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BORN APPROXIMATION
CARBON
DISTRIBUTION
INTERACTIONS
MATRICES
NEUTRONS
NUCLEAR MODELS
NUCLEAR THEORY
NUCLEONS
OPTICAL MODEL
PERTURBATION THEORY
PHYSICS
POLARIZATION
PROTONS
QUANTUM MECHANICS
SCATTERING
SPECTRAL SHIFT