Abstract
The nuclear photoeffect in tritium was investigated by irradiating a gaseous3H-target with bremsstrahlung of 32,5 MeV endpoint energy in the collimated beam of the Heidelberg betatron. Protons and deuterons from the reactions3H(γ, n)d and3H(γ, p)2n were measured independently at (90±15)° with respect to the γ-beam by adE/dx-E-semiconductor telescope. The cross section of the twobody disintegration3 H(γ, n)d is derived forγ-energies fromE γ=18 to 31 MeV. The integrated cross section from threshold to 32 MeV is (11.8±1.4) MeVmb. The cross section of the threebody disintegration3 H(γ, 2n)p is obtained by making assumptions regarding the angular distribution and energy split up amongst the three disintegration products, which appear plausible on theoretical grounds. Within experimental errors the results reported here seem to be in agreement with a theoretical calculation byFetisov.
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Ich danke Herrn Prof. Dr. J.Heintze für seine stete Förderung dieser Arbeit und wertvolle Diskussionen. Herrn Dr. R.Kosiek gilt mein Dank für viele nützliche Hinweise und fruchtbare Anregungen. Herr Prof. Dr. W.Seelmann-Eggebert und Herr Dr. O.Merwitz vom Kernforschungszentrum Karlsruhe unterstützten mich in dankenswerter Weise bei der Planung und Durchführung der Targetherstellung. Die Deutsche Forschungsgemeinschaft und das Bundesministerium für wissenschaftliche Forschung unterstützten die Untersuchung durch Bereitstellung von Apparaturen und Sachmitteln.
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Pfeiffer, R. Der Kernphotoeffekt am3H. Z. Physik 208, 129–141 (1968). https://doi.org/10.1007/BF01380118
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DOI: https://doi.org/10.1007/BF01380118