high-flux effusive molecular beams and reflection–absorption infrared spectroscopy
(RAIRS). It was determined that steady-state ethylene conversion with probabilities close to
unity could be achieved by using beams with ethylene fluxes equivalent to pressures in the
mTorr range and high (≥ 100) H2: C2H4 ratios. The RAIRS data suggest that the high
reaction probability is possible because such conditions lead to the removal of most of the …