Alti, Kamlesh and Khare, Alika (2009) Comment on "Generation of cold low divergent atomic beam of indium by laser ablation" [Rev. Sci. Instrum. 76, 113302 (2005)]. Rev Sci Instrum., 80 (4).

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Abstract

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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