Yamashita, Sukeaki

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TitleAngular Distributions of Alpha-Particles from F¹, Al²⁷ and P³¹bombarded with ProtonsAuthor(s)Yamashita, SukeakiCitationBulletin of the Institute for Chemical Research, KyotoUniversity (1963), 40(5-6): 402-402Issue Date1963-01-30URL http://hdl.handle.net/2433/75917RightType Departmental Bulletin PaperTextversionpublisherKyoto UniversityABSTRACTS Liquid Hydrogen Target for the Measurement of Spin Correlation Coefficients in Proton-Proton Scattering at 50 MeV S. KOBAYASHI, K. NISHIMURA, J. SANADA, D. C. WORTH, H. IMADA, N. RyU, H. HASAI, K. FUKUNAGA, S. B. NUNG, and Y. HIRADATE Institute for Nuclear Study, University of Tokyo, INSJ 47, January 22, (1962) A liquid hydrogen target has been constructed to measure spin correlation 'Coefficients in proton-proton scattering at a bombarding energy of 50 MeV. The essential part of the target is 3cm in diameter and 8cm in height, and the evapo-ration rate of liquid hydrogen was 0.15 liter per hour. The operation of the level control system was very easy and stable. The level of liquid hydrogen was mon-itored by the change of capacitance of a capacitor which was inserted in the target. Angular Distributions of Alpha-Particles from F19, AP7 and p3I bombarded with Protons Sukeaki YAMASHITA Journal of the Physical Society of Japan, 16, 2378 (1961) The angular distributions of the alpha-particles were obtained for the reactions F19(p, a)016 leaving the residual nucleus in the ground state, A1'7(p, a)Mg24 and P31(p, a)SpB leaving the residual nuclei in the ground and first excited states at four bombarding energies between 6.0 MeV and 7.4 MeV. The angular distribution for the reaction F'9(p, a)016 shows the backward peak at each energy, but at small angles it depends on the bombarding energy. The angular distributions for the reactions A1'7(p, a)Mg24 and P31(p, a)Sp8 are also energy-dependent, but contain a larger isotropic part than those for the reaction F'9(p, a)016. The integrated cross sections for the reactions AP7(p, a)Mg24 and P31(p, a)Si 28 leaving the residual nuclei in the first excited states are several times as large as those for the reac-tions leaving the residual nuclei in the ground states. It appears unlikely that these reactions can be accounted for by the formation of compound nucleus or by simple direct interaction. The possible mechanisms through which these reactions may take place are discussed. (402 ) 

Angular Distributions of Alpha-Particles from F¹, Al²⁷ and P³¹ bombarded with Protons

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Angular Distributions of Alpha-Particles from F¹, Al²⁷ and P³¹ bombarded with Protons

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