PRODUCTION OF ArmN2 IN THE Ar-CLUSTER BEAM PASSING THROUGH A NITROGEN GAS Yasushi Ozaki* and Tsutomu Fukuyama# * Josai University, Sakado, Japan # National Institute for Environmental Studies, Tsukuba, Japan The attachment reaction of N2 to relatively small Ar clusters was investigated by use of the pick-up technique and a mass spectrometer. The reaction cross section and number of Ar atoms evaporated by the attachment of N2 were obtained and found to be consistent with the calculated values by computer simulation.