Abstract
The energy spectra of protons and neutrons emitted in proton induced reactions on the targets103Rh,159Tb, and169Tm were measured at a bombarding energy of 18 MeV and at a variety of emission angles. Angle-integrated emission spectra were calculated and compared with preequilibrium model predictions. The general validity of the extended Griffin model with a systematic empirical set of model parameter values was verified. Evidence was obtained for the conservation (partial or complete) of isospin as a quantum number and for the possible utility of including a pairing energy shift in the calculations.
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Work supported in part by the U.S. Atomic Energy Commision and the Commissariat à l'Energie Atomique de France.
Supported by the National Science Foundation.
It is a great pleasure to thank J. R. Huizenga for the interest, encouragement and ideas he has furnished during the course of this work. In addition, the authors would like to acknowledge the active collaboration of John D. Anderson and Jay C. Davis in many of the (p, n) measurements and the help of Mehmet Kildir in the accumulation of the (p, p′) data.
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Kalbach, C., Grimes, S.M. & Wong, C. Comparison of proton and neutron spectra: The extended Griffin model, pairing and isospin. Z Physik A 275, 175–181 (1975). https://doi.org/10.1007/BF01409594
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DOI: https://doi.org/10.1007/BF01409594