Energy Dependence of Pion Production by Protons on Nuclei

P. H. Pile; R. D. Bent; R. E. Pollock; P. T. Debevec; R. E. Marrs; M. C. Green; T. P. Sjoreen; F. Soga

doi:10.1103/PhysRevLett.42.1461

Energy Dependence of Pion Production by Protons on Nuclei

P. H. Pile, R. D. Bent, R. E. Pollock, P. T. Debevec, R. E. Marrs, M. C. Green, T. P. Sjoreen, and F. Soga

Phys. Rev. Lett. 42, 1461 – Published 28 May 1979

Abstract

The reactions ${}^{10}B$ ( $p$ , $π^{+}$ ) ${}^{11}B$ (g.s.) and ${}^{40}{Ca}$ ( $p$ , $π^{+}$ ) ${}^{41}{Ca}$ (g.s.) have been studied with proton beams in the energy range 140 to 200 MeV. Angular distributions at several energies, supplemented with fixed-angle cross-section data at several other energies, establish for the first time the energy dependence of these reactions in the near-threshold region.

Received 15 January 1979

DOI:https://doi.org/10.1103/PhysRevLett.42.1461

Authors & Affiliations

P. H. Pile, R. D. Bent, R. E. Pollock, P. T. Debevec^*, R. E. Marrs^†, M. C. Green, T. P. Sjoreen, and F. Soga^‡

Indiana University Cyclotron Facility, Bloomington, Indiana 47405

^*Present address: Department of Physics, University of Illinois, Urbana, Ill. 61801.
^†Present address: TRIUMF, University of British Columbia, Vancouver 8, B. C. V6T1W5, Canada.
^‡On leave from Institute for Nuclear Study, University of Tokyo, Tokyo 188, Japan.