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Direct temperature measurement in alkali halide cluster beam

Zeitschrift für Physik D Atoms, Molecules and Clusters, ISSN: 0178-7683, Vol: 34, Issue: 2, Page: 135-138
1995
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  • Citations
    10
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      10

Article Description

The temperature of a sodium fluoride cluster beam produced by laser vaporization is estimated from the rotationally-resolved laser spectroscopy of the Na dimer. The cluster beam is obtained by laser vaporization of a sodium rod in a mixture of helium containing a small amount (1%) of SF. Both rotational and vibrational temperatures (respectively 170 K and 400 K) are much higher than expected from a simple theoretical model of a supersonic beam. These temperatures can be lowered to 70 K and 250 K respectively by cooling the nozzle to liquid nitrogen temperature. © 1995 Springer-Verlag.

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