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Positive-pion production by 160-MeV protons on /sup 90/Zr and /sup 208/Pb

Journal Article · · Phys. Rev. Lett.; (United States)
Angular distributions for the reactions /sup 98/Zr(p, ..pi../sup +/)/sup 91/Zr(g.s.) and /sup 208/Pb(p, ..pi../sup +/)/sup 209/Pb(0.0, 0.78, and 1.41 MeV) at 160 MeV have been measured from 25 to 155 deg using a quadruple-dipole-dipole-multipole magnetic spectrograph. The /sup 90/Zr angular distribution has a shallow minimum at about 80 deg; the /sup 208/Pb angular distributions have minima at more forward angles and rise markedly in the backward hemisphere. The (p, ..pi../sup +/) cross sections observed in this mass region depend weakly on target mass and angular momentum transfer.
Research Organization:
Indiana University Cyclotron Facility, Bloomington, Indiana 47401
OSTI ID:
5064480
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 40:8; ISSN PRLTA
Country of Publication:
United States
Language:
English

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