G. N. Makarov, A. N. Petin, “Detection of SF$_6$ molecules sublimating from the surface of (CO$_2$)$_N$ nanoparticles in a cluster beam by the infrared multiphoton excitation method”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2009, Volume 89, Issue 8,Pages <nobr>468

This article is cited in 6 papers

ATOMS, SPECTRA, RADIATIONS

Detection of SF$_6$ molecules sublimating from the surface of (CO$_2$)$_N$ nanoparticles in a cluster beam by the infrared multiphoton excitation method

G. N. Makarov^a, A. N. Petin^ba

^a Institute of Spectroscopy, Russian Academy of Sciences
^b Troitsk Institute for Innovation and Fusion Research

Abstract: It has been found that SF₆ molecules captured by large van der Waals clusters (CO₂)_N (where N ≥ 10² is the number of monomers in a cluster) in intersecting molecular and cluster beams sublimate from the surface of clusters after a certain time and carry information on the velocity and temperature (internal energy) of clusters. Experiments have been carried out for detecting these molecules by means of a pyroelectric detector and the infrared multiphoton excitation method. The multiphoton absorption spectra of molecules sublimating from the surface of clusters have been obtained. The temperature of the (CO₂)_N nanoparticles in the cluster beam has been estimated using these spectra and comparing them with the infrared multiphoton absorption spectra of SF₆ in the initial molecular beam.

PACS: 33.80.-b, 36.40.-c, 37.20.+j, 42.62.Fi, 81.07.-b

Received: 03.03.2009