Plasma Induced Defects in GaAs Probed by a Monoenergetic Positron Beam A. Uedono, L. Wei, T. Kawano, S. Tanigawa, K. Wada et H. Nakanishi J. Phys. IV France, 05 C1 (1995) C1-87-C1-90 DOI: 10.1051/jp4:1995110