E1 andE2/E0 form factors and strength distributions from(e,p) and(e,α) coincidence scattering
- 30 June 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 56 (26) , 2789-2792
- https://doi.org/10.1103/physrevlett.56.2789
Abstract
A model-independent multipole analysis of (e,e’p) and (e,e’α) coincidence data, taken at three momentum transfers 0.39<q<0.68 , yields both E1 and E2/E0 form factors and the respective multipole strength distributions in the giant-resonance region of (=14–22 MeV). While the deduced E1 strength agrees well with previous results, the total extracted E2/E0 strength is about twice the value found with isoscalar projectiles indicating the presence of large isovector E2/E0 contributions in the region of the isoscalar E2/E0 giant resonances.
Keywords
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