Time-dependent spectrum of thermionic emission from hot clusters: Model and example of C{sub 60}

Journal Article · Sat May 01 04:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.053201· OSTI ID:20643630

Lepine, F; Bordas, C ^[1]

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1. Laboratoire de Spectrometrie Ionique et Moleculaire, UMR No. 5579, CNRS and Universite Lyon I, Batiment A. Kastler, 43 Bvd. du 11 Novembre 1918, 69622 Villeurbanne cedex (France)

We have studied the evolution of the kinetic energy distribution of thermal electrons emitted from energy-rich clusters as a function of the delay after multiphoton excitation. In this paper we emphasize the description of thermionic emission based on the general formalism of the detailed balance theory. Our description accounts for competing decay channels and underlines the fundamental role of the observation time window. Simulations including two decay channels (namely, delayed electron emission and loss of C{sub 2} fragments) are compared with experimental results in the case of hot fullerenes C{sub 60}. The most striking result of the model is the close connection between the effective temperature of the electron distribution and the time delay of observation. Our model is in very good agreement with our experimental measurements of time-dependent photoelectron spectra.

• OSTI ID: 20643630
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC CLUSTERS
COMPUTERIZED SIMULATION
DECAY
DISTRIBUTION
ELECTRON EMISSION
ELECTRONS
EXCITATION
EXCITED STATES
FULLERENES
KINETIC ENERGY
MULTI-PHOTON PROCESSES
PHOTOELECTRON SPECTROSCOPY
THERMIONIC EMISSION
TIME DELAY
TIME DEPENDENCE
TIME RESOLUTION