Quasi-free proton-proton scattering in 1p-shell nuclei

doi:10.1016/0029-5582(63)90890-3

Nuclear Physics

Volume 47, August 1963, Pages 481-505

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Abstract

A distorted-wave analysis of (p, 2p) reactions on nuclei from the 1p-shell is performed by means of the impulse approximation and the semiclassical approximation. Results are presented for an incident proton energy of 170 MeV and in one case of 450 MeV and are compared with the existing experimental data. A discussion of the results is given, and it is shown that, in general, with harmonic oscillator wave functions the absolute magnitude of the differential cross section for the angular correlation distribution is reasonably well reproduced, but the shape of the angular correlation, which gives the (distorted) momentum distribution is in general better reproduced with exponential wave functions. A short discussion of the approximations involved follows, and the need for further work on (p, 2p) reactions is stressed.

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DWIA analysis of quasifree proton-proton scattering in nuclei at intermediate energies
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The distorted wave impulse approximation to the (p, 2p) reaction cross section is briefly reviewed, having foremost in mind its practical implementation as a computer program, suitable for extracting information on nuclear structure. The treatment of the distorted waves, and the approximation of the overlap integral between the ground state of the target nucleus and the final state of the residual nucleus, are discussed in more detail. As far as possible we have chosen methods which enable us to minimize the number of free reaction-theoretical parameters by deducing them from independent experimental data. As an illustration of how one can use a program constructed according to these principles, we analyze 460 MeV and 600 MeV data on the reaction ⁴⁰Ca(p, 2p)³⁹K with rather detailed discussion of various theoretical and experimental questions that must be taken into consideration before any conclusions can be drawn.
Photoproduction of pions on polarized protons and neutrons in the second resonance region
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Quasi-free scattering with polarized protons
1976, Nuclear Physics, Section A
Asymmetric (p, 2p) reactions induced by polarized protons are analysed. The nuclear absorption and refraction enhances the cross section for the knock-out of protons with a certain polarization direction which depends on their momentum and on the resulting hole state. The expected pronounced and strongly angle dependent asymmetries in the correlation distributions are calculated for the quasi-stationary hole states of ¹⁶O and ⁴⁰Ca.
Effects of short-range correlation and distortion in the reaction <sup>4</sup>He(e, e′p)<sup>3</sup>H
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The hole states created in single-particle knock-out reactions are physical states but have finite lifetime. The hole is moving in a complex potential, the imaginary part of which is related to the width of the state, and the hole energy and wave functions are complex. The influence of these features on the momentum distributions of the hole is studied for the knock-out of the 1s and 1p protons from ¹²C and is found to be rather insignificant. However it is interesting to note that the overlap integral in momentum space shows a significant change.

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^†: On leave of absence from the Institute of Theoretical Physics, University of Uppsala, Sweden.

^††: Now at the Instituto de Fisica, Universidade do Rio Grande do Sul, Pôrto Alegre, Brasil.

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Nuclear Physics

Quasi-free proton-proton scattering in 1p-shell nuclei

Abstract

Phys. Rev.

Phys. Rev.

Ann. of Phys.

Nuclear Physics

Ann. de Phys.

Nuclear Physics

Nuclear Physics

Phys. Rev.

Phys. Rev.

Phys. Rev.

Phys. Lett.

Nuclear Physics

Phys. Lett.

Nuovo Cim.

Prog. Theor. Phys.

Nuclear Physics

Nuclear Physics

Nuclear Physics

Mat. Fys. Medd. Dan. Vid. Selsk.

Nuovo Cim.

Nuclear Physics

Phys. Rev. Lett.

Phys. Lett.

Phys. Lett.

Nuclear Physics

DWIA analysis of quasifree proton-proton scattering in nuclei at intermediate energies

Photoproduction of pions on polarized protons and neutrons in the second resonance region

Quasi-free scattering with polarized protons

Effects of short-range correlation and distortion in the reaction <sup>4</sup>He(e, e′p)<sup>3</sup>H

Probing the spin-orbit coupling of nuclear protons

Hole states in single-particle knock-out reactions