Energy distribution of low-energy electrons and free-ion yields in irradiated liquid hydrocarbons

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Pairs of ions and low-energy electrons, below about several eV, are regarded as H-like atoms embedded in a fluctuating medium. In contrast to the polar medium case, where dielectric relaxation plays a central role, electrons lose energy via spontaneous deexcitation and undergo constant energy exchange with local fluctuations. By comparing the parameters of the pair-correlation and autocorrelation functions of the medium fluctuations with the radius and lifetime of the Rydberg states, respectively, it is strongly suggested that fluctuations interact only with the three lowest-lying states. This makes the n = 4 state more populous by orders of magnitude than any other state below or above, since it is populated by fast fluctuations and depopulated by the slow spontaneous process. Hence electron escape, effected by local energy fluctuations, can be regarded as a transfer from the E(n = 4) to the V 0 state, the latter being the energy of the quasifree electrons. Computing free-ion yields as a function of V0, one finds good agreement with experimental data without making use of any adjustable parameter.

Original languageEnglish
Pages (from-to)6531-6535
Number of pages5
JournalThe Journal of Chemical Physics
Volume96
Issue number9
Publication statusPublished - 1992

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Hydrocarbons
energy distribution
hydrocarbons
free energy
electron energy
Ions
Electrons
Liquids
liquids
ions
Rydberg states
Dielectric relaxation
Autocorrelation
electrons
autocorrelation
escape
energy
Atoms
energy transfer
life (durability)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Energy distribution of low-energy electrons and free-ion yields in irradiated liquid hydrocarbons. / Schiller, R.

In: The Journal of Chemical Physics, Vol. 96, No. 9, 1992, p. 6531-6535.

Research output: Contribution to journalArticle

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