Analyzing powers for proton inelastic scattering to unnatural-parity states in Ca40 and Si28

K. Hosono, N. Matsuoka, K. Hatanaka, T. Saito, Tetsuo Noro, M. Kondo, S. Kato, K. Okada, K. Ogino, Y. Kadota

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Cross sections and analyzing powers in proton inelastic scattering leading to unnatural parity states of 2-, T=0 (6.025 and 6.75 MeV), 2-, T=1 (8.42 MeV) in Ca40 and 6-, T=0 (11.58 MeV) and 6-, T=1 (14.36 MeV) in Si28 were measured at 65 MeV. These states are pair states of different isospin with the same spin and parity. The analyzing powers for a pair of T=0 and T=1 excitations in Ca40 show an isospin dependence not observed in Si28. The measured angular distributions were compared with microscopic distorted-wave Born approximation calculations using two versions of the effective nucleon-nucleon interaction. As expected, the interaction emphasizing the tensor contribution predicts analyzing powers and cross sections in better agreement with the experimental data. As factors to produce a difference in the analyzing powers between the T=0 and the T=1 states, the effect of two transferred orbital angular momentum amplitudes allowed in a transition and the energy dependence of the isoscalar spin-dependent terms in the effective interaction are discussed. NUCLEAR REACTIONS Ca40(p→,p′)Ca40, Si28(p→,p′)Si28, Mg24(p→,p′)Mg24, E=65 MeV, unnatural parity states of Ex=6-15 MeV, measured σ(θ), analyzing power Ay(θ), resolution ∼35 keV, DWBA analysis.

Original languageEnglish
Pages (from-to)1440-1450
Number of pages11
JournalPhysical Review C
Volume26
Issue number4
DOIs
Publication statusPublished - Jan 1 1982

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proton scattering
parity
inelastic scattering
nucleon-nucleon interactions
cross sections
Born approximation
angular distribution
angular momentum
interactions
tensors
orbitals
excitation
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Hosono, K., Matsuoka, N., Hatanaka, K., Saito, T., Noro, T., Kondo, M., ... Kadota, Y. (1982). Analyzing powers for proton inelastic scattering to unnatural-parity states in Ca40 and Si28. Physical Review C, 26(4), 1440-1450. https://doi.org/10.1103/PhysRevC.26.1440

Analyzing powers for proton inelastic scattering to unnatural-parity states in Ca40 and Si28. / Hosono, K.; Matsuoka, N.; Hatanaka, K.; Saito, T.; Noro, Tetsuo; Kondo, M.; Kato, S.; Okada, K.; Ogino, K.; Kadota, Y.

In: Physical Review C, Vol. 26, No. 4, 01.01.1982, p. 1440-1450.

Research output: Contribution to journalArticle

Hosono, K, Matsuoka, N, Hatanaka, K, Saito, T, Noro, T, Kondo, M, Kato, S, Okada, K, Ogino, K & Kadota, Y 1982, 'Analyzing powers for proton inelastic scattering to unnatural-parity states in Ca40 and Si28', Physical Review C, vol. 26, no. 4, pp. 1440-1450. https://doi.org/10.1103/PhysRevC.26.1440
Hosono, K. ; Matsuoka, N. ; Hatanaka, K. ; Saito, T. ; Noro, Tetsuo ; Kondo, M. ; Kato, S. ; Okada, K. ; Ogino, K. ; Kadota, Y. / Analyzing powers for proton inelastic scattering to unnatural-parity states in Ca40 and Si28. In: Physical Review C. 1982 ; Vol. 26, No. 4. pp. 1440-1450.
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