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High Energy Proton-Proton Scattering and Associated Polarization Effects

Journal Article · · Physical Review
 [1];  [1]
  1. Univ. of Rochester, NY (United States)
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Three phenomenological descriptions of p-p scattering have been proposed to date, two of which, the singular tensor-force model of Christian-Noyes and the L·S force model of Case-Pais, are characterized by a singular triplet potential. The Jastrow model introduces a hard core in the singlet interaction. The parameters of these various potentials were all determined, in part, by use of Born approximation estimates of triplet scattering cross sections at high energies. Inasmuch as the validity of such estimates is not clear in those cases where the interaction is singular, more exact calculations have been performed at 240 Mev with the singular potentials (and also, for comparative purposes, with the well-behaved triplet interaction of Jastrow) using Schwinger's variational method and/or numerical integration procedures. Such calculations have also been performed at 450 Mev for the singular tensor-force model. Further, to insure the existence of solutions, a zero cutoff has been introduced in the singular potentials at distances of the order of the nucleon Compton wavelength. It is found that, in all instances where the potential is singular, the Born approximation and the use of Born approximation trial functions in a variational treatment are completely unreliable. More exact calculations of the differential scattering cross sections than those in Born approximation introduce large anisotropies in the case of the singular interactions and, in particular, in the case of the L·S potential. The hard-core model, on the other hand, is in qualitative agreement with experiment. Also discussed are the results of calculations of polarization effects in a double p-p scattering and their implications for the various potentials considered.
Research Organization:
Univ. of Rochester, NY (United States)
Sponsoring Organization:
USDOE
NSA Number:
NSA-06-005895
OSTI ID:
4379976
Report Number(s):
NYO--3217
Journal Information:
Physical Review, Journal Name: Physical Review Journal Issue: 5 Vol. 88; ISSN 0031-899X
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
Country unknown/Code not available
Language:
English

References (23)

Proton–Proton Scattering at 146 MeV. journal September 1951
Automatic Integration of Linear Second-Order Differential Equations by Means of Punched Card Machines journal August 1941
Invariant Forms of Interaction between Nuclear Particles journal June 1941
On Polarized Particle Beams journal March 1952
On the Neutron-Proton Interaction journal March 1941
Velocity Dependence of Nuclear Forces journal December 1947
Neutron-Proton and Proton-Proton Scattering at High Energies journal May 1948
Theory of Proposed Reactions Involving Polarized Protons journal June 1949
Neutron-Proton and Neutron-Neutron Scattering at High Energies journal March 1949
Theory of the Effective Range in Nuclear Scattering journal July 1949
Polarization Effects inn−pandp−pScattering journal August 1949
The Scattering of Protons by Protons near 30 Mev, Photographic Method journal July 1950
Proton-Proton Scattering at 31.8 Mev, Proportional Counter Method journal July 1950
The Proton-Proton Interaction journal July 1950
On Spin-Orbit Interactions and Nucleon-Nucleon Scattering journal October 1950
On the Nucleon-Nucleon Interaction journal January 1951
Conservation of Angular Momentum in the Statistical Theory of Nuclear Reactions journal June 1951
Proton-Proton Scattering at 105 Mev and 75 Mev journal July 1951
Experiments on Proton-Proton Scattering from 120 to 345 Mev journal September 1951
Proton-Proton Scattering at 240 Mev by a Magnetic Deflection Method journal March 1952
Proton-Proton Scattering at 240 Mev journal February 1952
Invariance Conditions on the Scattering Amplitudes for Spin ½ Particles journal March 1952
Topics in Scattering Theory journal July 1951

Figures / Tables (15)

Table I(p. 25)table Table I
Table II(p. 26)table Table II
Table III(p. 27)table Table III
Table IV(p. 28)table Table IV
Table V(p. 29)table Table V
Table VI(p. 30)table Table VI
Fig. 1(p. 36)figure Fig. 1
Fig. 2(p. 37)figure Fig. 2
Fig. 3(p. 38)figure Fig. 3
Fig. 4(p. 39)figure Fig. 4
Fig. 5(p. 40)figure Fig. 5
Fig. 6(p. 41)figure Fig. 6
Fig. 7(p. 42)figure Fig. 7
Fig. 8(p. 43)figure Fig. 8
Fig. 9(p. 44)figure Fig. 9

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
BORN APPROXIMATION
CROSS SECTIONS
INTERACTIONS
PARTICLE MODELS
PERTURBATION THEORY
POLARIZATION
PROTONS
SCATTERING