Comment on “Generation of cold low divergent atomic beam of indium by laser ablation” [Rev. Sci. Instrum. 76, 113302 (2005)]

Denning, A.; Booth, A.; Lee, S.; Amonson, M.; Bergeson, S. D.
April 2009
Review of Scientific Instruments;Apr2009, Vol. 80 Issue 4, p047101
Academic Journal
We present measurements of the velocity distribution of calcium atoms in an atomic beam generated using a dual-stage laser back-ablation apparatus. Distributions are measured using a velocity selective Doppler time-of-flight technique. They are Boltzmann-like with rms velocities corresponding to temperatures above the melting point for calcium. Contrary to a recent report in the literature, this method does not generate a subthermal atomic beam.


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