ANGLE-RESOLVED RESONANT AUGER ELECTRON SPECTROSCOPY OF BCl_3 K. Ueda$^\ast$, Y. Shimizu$^\ast$, H. Chiba$^\ast$, Y. Sato$^\ast$, M. Kitajima$^\dagger$, H. Tanaka$^\dagger$ and T. Hayaishi$^\ddagger$ $^\ast$Research Institute for Scientific Measurements, Tohoku University, Sendai 980-8577, Japan $^\dagger$Department of Physics, Sophia University, Tokyo 102-8554, Japan $^\ddagger$ Institute of Applied Physics University of Tsukuba, Tsukuba 305-8577, Japan Resonant enhancements for the photoemission lines from the B-Cl bonding orbitals in BCl_3 and the corresponding decrease of the asymmetry parameters beta for these photolines are observed in the B 1s -> 2a_2'' and B 1s -> 4e' excitation regions.