Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
1997-09-11
Phys.Rev.C58:3205-3211,1998
Physics
Nuclear Physics
Nuclear Experiment
8 Pages LaTex, 5 postscript figures. Submitted to Phys. Rev. C
Scientific paper
10.1103/PhysRevC.58.3205
The coincidence cross-section and the interference structure function, R_LT, were measured for the 12C(e,e'p) 11B reaction at quasielastic kinematics and central momentum transfer of q=400 MeV/c. The measurement was at an opening angle of theta_pq=11 degrees, covering a range in missing energy of E_m = 0 to 65 MeV. The R_LT structure function is found to be consistent with zero for E_m > 50 MeV, confirming an earlier study which indicated that R_L vanishes in this region. The integrated strengths of the p- and s-shell are compared with a Distorted Wave Impulse Approximation calculation. The s-shell strength and shape are compared with a Hartree Fock-Random Phase Approximation calculation. The DWIA calculation overestimates the cross sections for p- and s-shell proton knockout as expected, but surprisingly agrees with the extracted R_LT value for both shells. The HF-RPA calculation describes the data more consistently, which may be due to the inclusion of 2-body currents in this calculation.
Alarcon Rosa
Beck Rainer
Bertozzi W.
Bhushan V.
Boeglin W.
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