Spin-flip isovector giant resonances from the Zr90(n,p)90Y reaction at 198 MeV

K. J. Raywood*, B. M. Spicer, S. Yen, S. A. Long, M. A. Moinester, R. Abegg, W. P. Alford, A. Celler, T. E. Drake, D. Frekers, P. E. Green, O. Häusser, R. L. Helmer, R. S. Henderson, K. H. Hicks, K. P. Jackson, R. G. Jeppesen, J. D. King, N. S.P. King, C. A. MillerV. C. Officer, R. Schubank, G. G. Shute, M. Vetterli, J. Watson, A. I. Yavin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Doubly differential cross sections of the reaction Zr90(n,p)90Y have been measured at 198 MeV for excitations up to 38 MeV in the residual nucleus. An overall resolution of 1.3 MeV was achieved. The spectra show qualitative agreement in shape and magnitude with recent random phase approximation calculations; however, all of the calculations underestimate the high excitation region of the spectra. A multipole decomposition of the data has been performed using differential cross sections calculated in the distorted-wave impulse approximation. An estimate of the Gamow-Teller strength in the reaction is given. The isovector spin-flip dipole giant resonance has been identified and there is also an indication of isovector monopole strength.

Original languageEnglish
Pages (from-to)2836-2851
Number of pages16
JournalPhysical Review C - Nuclear Physics
Issue number6
StatePublished - 1990


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