Date of Original Version
Neon atoms are captured by helium clusters in a crossed-beam experiment. The capture process depends strongly on the cluster beam source conditions. We identify a sharply defined region corresponding to expansions passing near the critical point for which the capture probability is anomalously large.
A. Scheidemann, J. P. Toennies, and J. A. Northby. (1990). "Capture of neon atoms by He4 clusters." Physical Review Letters, 64(16), 1899. Available at: http://dx.doi.org/10.1103/PhysRevLett.64.1899