Inclusive quasielastic scattering of polarized electrons from polarized nuclei

The inclusive quasielastic response functions that appear in the scattering of polarized electrons from polarized nuclei are computed and analyzed for several closed-shell-minus-one nuclei with special attention paid to K. Results are presented using two models for the ejected nucleon | when described by a distorted wave in the continuum shell model or by a plane wave in PWIA with onand o -shell nucleons. Relativistic e ects in kinematics and in the electromagnetic current have been incorporated throughout. Speci cally, the recently obtained expansion of the electromagnetic current in powers only of the struck nucleon's momentum is employed for the on-shell current and the e ects of the rst-order terms (spin-orbit and convection) are compared with the zeroth-order (charge and magnetization) contributions. The use of polarized inclusive quasielastic electron scattering as a tool for determining near-valence nucleon momentum distributions is discussed. This work is supported in part by funds provided by the U.S. Department of Energy (D.O.E.) under cooperative agreement #DE-FC01-94ER40818 (T.W.D. and J.E.A.), in part by DGICYT (Spain) under Contract Nos. PB92/0021-C02-01 and PB92-0927 and the Junta de Andaluc a (Spain) and in part by NATO Collaborative Research Grant #940183. MIT/CTP#2549 July 1996