skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Energy dependence of analyzing power [ital A][sub [ital y]] and cross section for [ital p]+[ital d] scattering below 18 MeV

Abstract

The vector analyzing power [ital A][sub [ital y]]([theta]) of the [sup 2]H([ital [rvec p]],[ital p])[sup 2]H scattering has been measured at [ital E][sub [ital p]]=5, 6, 6.5, 7, 8, 8.5, 9, 10, 12, 14, 16, and 18 MeV with a typical statistical accuracy of 0.0009 and an uncertainty in the beam polarization of less than 0.7%. The differential cross section [sigma]([theta]) of the [sup 2]H([ital p],[ital p])[sup 2]H scattering has also been measured with a typical uncertainty of 0.8% using unpolarized beams of the same energies and of 2, 2.5, 3, and 4 MeV. A large discrepancy of about 25% between the experiment and the Faddeev calculation with the Paris [ital NN] potential is observed at the maximum of [ital A][sub [ital y]]([theta]) around [theta][sub c.m.]=120[degree]. This discrepancy is shown to be reduced by modifying [ital LS] force in the [ital NN] potential, though a discrepancy still remains in the energy dependence of the [ital A][sub [ital y]]([theta]) maximum. At the minimum of [sigma]([theta]) around [theta][sub c.m.]=120[degree], a large discrepancy ranging from [minus]19% at 2 MeV to +24% at 18 MeV is observed between the experiment and the calculations with either of the original and the [ital LS]-modified [ital NN]more » potentials. This indicates that an improvement is also necessary in the scalar part of the potential. The difference in the [ital A][sub [ital y]]([theta]) maximum between the [ital [rvec p]]+[ital d] and the [ital [rvec n]]+[ital d] scatterings is discussed.« less

Authors:
; ; ; ; ; ;  [1]
  1. Department of Physics, Kyushu University, Hakozaki, Fukuoka, 812 (Japan)
Publication Date:
OSTI Identifier:
7263780
Resource Type:
Journal Article
Journal Name:
Physical Review, C (Nuclear Physics); (United States)
Additional Journal Information:
Journal Volume: 50:2; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANALYZING POWER; ENERGY DEPENDENCE; DEUTERIUM TARGET; PROTON REACTIONS; DIFFERENTIAL CROSS SECTIONS; ELASTIC SCATTERING; FADDEEV EQUATIONS; MEV RANGE 01-10; MEV RANGE 10-100; NUCLEON-NUCLEON POTENTIAL; POLARIZATION; POLARIZED BEAMS; THREE-BODY PROBLEM; BARYON REACTIONS; BEAMS; CHARGED-PARTICLE REACTIONS; CROSS SECTIONS; ENERGY RANGE; EQUATIONS; HADRON REACTIONS; MANY-BODY PROBLEM; MEV RANGE; NUCLEAR REACTIONS; NUCLEON REACTIONS; POTENTIALS; SCATTERING; TARGETS; 663430* - Nucleon-Induced Reactions & Scattering- (1992-); 663510 - Nuclear Mass Ranges- A=1-5- (1992-); 663300 - Nuclear Reactions & Scattering, General- (1992-)

Citation Formats

Sagara, K, Oguri, H, Shimizu, S, Maeda, K, Nakamura, H, Nakashima, T, and Morinobu, S. Energy dependence of analyzing power [ital A][sub [ital y]] and cross section for [ital p]+[ital d] scattering below 18 MeV. United States: N. p., 1994. Web. doi:10.1103/PhysRevC.50.576.
Sagara, K, Oguri, H, Shimizu, S, Maeda, K, Nakamura, H, Nakashima, T, & Morinobu, S. Energy dependence of analyzing power [ital A][sub [ital y]] and cross section for [ital p]+[ital d] scattering below 18 MeV. United States. doi:10.1103/PhysRevC.50.576.
Sagara, K, Oguri, H, Shimizu, S, Maeda, K, Nakamura, H, Nakashima, T, and Morinobu, S. Mon . "Energy dependence of analyzing power [ital A][sub [ital y]] and cross section for [ital p]+[ital d] scattering below 18 MeV". United States. doi:10.1103/PhysRevC.50.576.
@article{osti_7263780,
title = {Energy dependence of analyzing power [ital A][sub [ital y]] and cross section for [ital p]+[ital d] scattering below 18 MeV},
author = {Sagara, K and Oguri, H and Shimizu, S and Maeda, K and Nakamura, H and Nakashima, T and Morinobu, S},
abstractNote = {The vector analyzing power [ital A][sub [ital y]]([theta]) of the [sup 2]H([ital [rvec p]],[ital p])[sup 2]H scattering has been measured at [ital E][sub [ital p]]=5, 6, 6.5, 7, 8, 8.5, 9, 10, 12, 14, 16, and 18 MeV with a typical statistical accuracy of 0.0009 and an uncertainty in the beam polarization of less than 0.7%. The differential cross section [sigma]([theta]) of the [sup 2]H([ital p],[ital p])[sup 2]H scattering has also been measured with a typical uncertainty of 0.8% using unpolarized beams of the same energies and of 2, 2.5, 3, and 4 MeV. A large discrepancy of about 25% between the experiment and the Faddeev calculation with the Paris [ital NN] potential is observed at the maximum of [ital A][sub [ital y]]([theta]) around [theta][sub c.m.]=120[degree]. This discrepancy is shown to be reduced by modifying [ital LS] force in the [ital NN] potential, though a discrepancy still remains in the energy dependence of the [ital A][sub [ital y]]([theta]) maximum. At the minimum of [sigma]([theta]) around [theta][sub c.m.]=120[degree], a large discrepancy ranging from [minus]19% at 2 MeV to +24% at 18 MeV is observed between the experiment and the calculations with either of the original and the [ital LS]-modified [ital NN] potentials. This indicates that an improvement is also necessary in the scalar part of the potential. The difference in the [ital A][sub [ital y]]([theta]) maximum between the [ital [rvec p]]+[ital d] and the [ital [rvec n]]+[ital d] scatterings is discussed.},
doi = {10.1103/PhysRevC.50.576},
journal = {Physical Review, C (Nuclear Physics); (United States)},
issn = {0556-2813},
number = ,
volume = 50:2,
place = {United States},
year = {1994},
month = {8}
}