Proton-Induced ^2H and ^3He Breakup at 156 MeV

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概要

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• The breakup of ^<2>H induced by 156 MeV protons has been studied in the (p, 2p) and the (p,pn) reactions in the kinematically complete measurement with the unique kinematic condition: The three nucleons are collinear in the center of mass system of three nucleons in the final state. Also we performed experiments having neighboring kinematic conditions. The d^3σ spectrum gives a peak in the region far from the final state interaction and the true quasi-free interaction regions. In this region of interest d^3σ is calculated by a model derived from the fixed-scattering-center approximation proposed by L'Huillier and Ballot with Benoist-Gueutal. The model gives a smooth minimum, while the experimental peak is very sharp and sensitive to θ_3. The fixed-scattering-center approximation explains the present experimental d^3σ spectrum in the entire region fairly well except at this peak. Because of this, we consider this peak difficult to explain by the fixed-scattering-center approximation to the Faddeev equation solution. This peak is similar to that observed by Lambert et al. at 23 MeV. The breakup of ^<3>He induced by 156 MeV protons was also studied in a complete kinematic measurement through the (p, dp), (p, 2p) and (p, pn) reactions by using a liquid ^<3>He target and under the adequate kinematic conditions for the detection of p-d, p-<pn>^^^⌒ and p-<2p>^^^⌒ coplanar final state interactions. The existence of the proton-deuteron final state interaction with the Coulomb repulsive interaction has been clearly observed, for the first time, in the d^3σ and the d^4σ spectra for the (p, dp) reaction. For the minimum p-d relative energy (0.0093 MeV),the d^3σ and the d^4σ spectra present a minimum, and for E^<CM>_<p-d>~0.4 MeV, a maximum. The other 3N final state interactions have also been observed around their minimum relative energies. The analysis of events distributed in the E_1-E_2 plane from the (p,2p) reaction reveals the existence of the (p,<2p>^^^⌒ p) and (p,<pn>^^^⌒ p) reactions and one (or two) excitation of three nucleon systems. The comparison of the d^3σ_<exp> and d^4σ_<exp> with those calculated in the frame of the PWIA by using the Hulthen type wave function for ^<2>H, and the Irving-Gunn type one for ^<3>He was made.

• 理論物理学刊行会の論文
• 1977-07-25

著者

• Nakamura-yokota Hitoshi

  Institut De Physique Nucleaire University : Tokyo Institute Of Technology

• Fujiwara Noboru

  Institut De Physique Nucleaire University : Laboratory Of Nuclear Science Institute For Chemical Res

• YUASA Toshiko

  Institut de Physique Nucleaire, University

• Yuasa Toshiko

  Institut De Physique Nucleaire University

• Fujiwara Noboru

  Institute For Chemical Research Kyoto University:department Of Physics Nara Women's University

• NAKAMURA-YOKOTA Hitoshi

  Institut de Physique Nucleaire, University : Tokyo Institute of Technology

• FUJIWARA Noboru

  Institut de Physique Nucleaire, University : Laboratory of Nuclear Science, Institute for Chemical Research, Kyoto University

関連論文

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• Elastic and Inelastic Scattering of Deuterons by ^9Be in the Energy Range of 12.17 MeV to 14.43 MeV
• The D (d,d) D, D (d,p) T and D (d,^3He) n Reactions at 13.2 MeV
• Excited States of ^4He Observed in the ^6Li+d Reaction
• Excited States of ^B near 10 MeV Studied by Proton Induced Reactions on ^9Be
• Quasi-Free Scattering in the Reaction Be^9(p,pα)He^5 at 55 MeV
• B^(α,Li^7)Be^8 Reaction at 28.4 and 29.0 MeV
• B^+α⇾α+α+Li^7 Reaction at 28.5 MeV
• Inelastic Scattering of Alpha Particles by Be^9 at 28.5MeV
• Proton-Induced ^2H and ^3He Breakup at 156 MeV

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