Publikation: Thermionic emission from small clusters : direct observation of the kinetic energy distribution of the electrons
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1995
Autor:innen
Weidele, Horst
Kreisle, Dietmar
Schulze Icking-Konert, Georg
Handschuh, Haiko
Eberhardt, Wolfgang
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Chemical Physics Letters. 1995, 237(5-6), pp. 425-431. Available under: doi: 10.1016/0009-2614(95)00344-4
Zusammenfassung
Photoelectron spectra of small mass-separated Wn− clusters cooled cooled in a seeding gas are recorded with a low laser flux that ensures single-photon events. The spectra exhibit (i) sharp features due to direct photoemission and (ii) a broad emission signal whose intensity decreases with increasing kinetic energy. The latter is caused by delayed electron emission, a process similar to bulk thermionic emission . The kinetic energy distribution of these electrons can be approximated by a Boltzmann function with a temperature corresponding to the photon energy divided by the number of vibrational degrees of freedom of the cluster.
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WEIDELE, Horst, Dietmar KREISLE, Ekkehard RECKNAGEL, Georg SCHULZE ICKING-KONERT, Haiko HANDSCHUH, Gerd GANTEFÖR, Wolfgang EBERHARDT, 1995. Thermionic emission from small clusters : direct observation of the kinetic energy distribution of the electrons. In: Chemical Physics Letters. 1995, 237(5-6), pp. 425-431. Available under: doi: 10.1016/0009-2614(95)00344-4BibTex
@article{Weidele1995Therm-4731,
year={1995},
doi={10.1016/0009-2614(95)00344-4},
title={Thermionic emission from small clusters : direct observation of the kinetic energy distribution of the electrons},
number={5-6},
volume={237},
journal={Chemical Physics Letters},
pages={425--431},
author={Weidele, Horst and Kreisle, Dietmar and Recknagel, Ekkehard and Schulze Icking-Konert, Georg and Handschuh, Haiko and Ganteför, Gerd and Eberhardt, Wolfgang}
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<dcterms:abstract xml:lang="eng">Photoelectron spectra of small mass-separated Wn− clusters cooled cooled in a seeding gas are recorded with a low laser flux that ensures single-photon events. The spectra exhibit (i) sharp features due to direct photoemission and (ii) a broad emission signal whose intensity decreases with increasing kinetic energy. The latter is caused by delayed electron emission, a process similar to bulk thermionic emission . The kinetic energy distribution of these electrons can be approximated by a Boltzmann function with a temperature corresponding to the photon energy divided by the number of vibrational degrees of freedom of the cluster.</dcterms:abstract>
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<dcterms:bibliographicCitation>First publ. in: Chemical Physics Letters 237 (1995), 5-6, pp. 425-431</dcterms:bibliographicCitation>
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