Affiliation: | (1) Department of Physics, University of Tokyo, Japan;(2) TRIUMF, Vancouver, B. C., Canada;(3) Department of Physics, Queen's University, Kingston, Ontario;(4) TRIUMF and Department of Physics and Chemistry, University of British Columbia, Vancouver, B. C., Canada;(5) Ecole Centrale, 92290 Chatenay-Malabry, France;(6) Present address: Centre d'Etudes de Chimie Métallurgique, CNRS, 94400 Vitry, France |