26Mg nuclear structure from 26Mg(200 MeV)+208Pb scattering
Abstract
Differential cross sections are reported for elastic scattering and for exciting the 2+1 (1.81 MeV), 2+2 (2.94 MeV), 4+1 (4.32 MeV), and the 4+2 (4.90 MeV) states of 26Mg from 26Mg (200 MeV)+208Pb scattering. In addition, we have measured complete particle-γ angular correlations for the 2+1-->0+1, 2+2-->2+1, and 4+2-->2+1 γ decays. Coupled-channels analysis was performed to extract E2 and E4 matrix elements. For the ground-state rotational band we find M(E20+1⇆2+1)=-16.79+/-0.13 e fm2, M(E40+1⇆4+2)=+95+/-10 e fm4, and Q2(2+1)=-20.9+/-1.9 fm2, where we have identified the 4+2 (4.90 MeV) state as a member of the ground-state band rather than the 4+1 (4.32 MeV) state. The 2+2 (2.94 MeV) state is not well accounted for by the asymmetric-rotor model.
- Publication:
-
Physical Review C
- Pub Date:
- June 1991
- DOI:
- 10.1103/PhysRevC.43.2546
- Bibcode:
- 1991PhRvC..43.2546H
- Keywords:
-
- 21.10.Ky;
- 23.20.En;
- 25.70.-z;
- 27.30.+t;
- Electromagnetic moments;
- Angular distribution and correlation measurements;
- Low and intermediate energy heavy-ion reactions;
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