Isoscalar spin excitation in 40Ca
Abstract
A signature Syd of isoscalar spin-transfer strength has been tested in the inelastic scattering of 400 MeV dueterons from 12C. It was then applied to the study of 40Ca over an angular range from 3° to 7° (momentum transfer range from 0.26 to 0.8 fm-1) and an excitation energy range from 6.25 to 42 MeV. This is the first study of isoscalar spin strength in the continuum. Spin excitations were found in the 9 MeV region, and over a broad range in the continuum with a cluster strength around 15 MeV. The results are compared with spin-flip probability measurements in proton scattering. In contrast to the total relative spin response, which is strongly enhanced at high excitation, the isoscalar relative spin response is roughly consistent with noninteracting Fermi gas values.
- Publication:
-
Physical Review C
- Pub Date:
- September 1992
- DOI:
- 10.1103/PhysRevC.46.1008
- Bibcode:
- 1992PhRvC..46.1008M
- Keywords:
-
- 25.45.De;
- 21.10.Hw;
- 27.40.+z;
- Elastic and inelastic scattering;
- Spin parity and isobaric spin;
- 39<
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