CROSS-CORRELATION TOF METHOD BY PSUDORANDOM PULSE DISCHARGE

Hisashi Kawaguchi, Masanori Yamato, Hiroshi Ohoyama, and Toshio Kasai

Department of Chemistry, Graduate School of Science, Osaka University,
Toyonaka, Osaka 560-0043 Japan

A new cross-correlation time-of-flight (CC-TOF) method for pulsed　metastabl
e atom beam is demonstrated. In this method, we modulate the grid voltage
for the metastable atom formation with pseudorandom pulse sequence instead
of mechanical chopping. The TOF spectrum convoluted from the observed
CC-TOF spectrum is found to nicely reproduce the conventional TOF spectrum,
indicating useful applicability of the new method.