The nuclear spin response to intermediate energy protons

Autor: V. R. Cupps, R. Jeppeson, K.H. Hicks, C. A. Miller, R.S. Henderson, R.W. Fergerson, W. Unkelbach, K.W Jones, J. Wambach, D. Beatty, R. D. Smith, L. Bimbot, S. Nanda, A. Green, Chaden Djalali, B. Castel, A. Willis, O. Häusser, M. Morlet, Michel Vetterli, Charles Glashausser, J. Lisantti, R. Sawafta, R. Abegg, K. P. Jackson, S. Yen, F. T. Baker
Rok vydání: 1990
Předmět:
Zdroj: Physics Letters B. 237:337-340
ISSN: 0370-2693
Popis: Measurements of the spin-flip probability S nn for inclusive inelastic proton scattering around 300 MeV from nuclei between 12 C and 90 Zr show that an enhanced spin response near 40 MeV excitation at q ∼ 100 MeV/ c is a general feature of nuclear structure. Data for 40 Ca at 800 MeV confirm that the enhancement is not a peculiarity of 300 MeV scattering. In addition, measurements in 44 Ca up to 75 MeV show that the enhancement cannot be attributed solely to a relatively narrow resonance. Continuum RPA calculations suggest that the enhancement is due to the exhaustion of most S = 0 strength at lower energy and a shift of S = 1 strength to higher energy.
Databáze: OpenAIRE