Self-trapping of radiation produced electrons

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

THE problem treated here is the trapping of free electrons produced by ionizing radiation in dielectric systems. Detailed theoretical descriptions of the equilibrium properties of the solvated electron are available1-3, but its formation is still under discussion. Electrons are formed and thermalized in the coulomb field of the positive ions, but not fully recaptured by the ions. Magee4 considered the auto-ionization of the H3O radicals as a possible secondary source of electrons; Freeman5-7 assumed the electrons to be trapped in the defect sites of the medium at the instant of thermalization, while we thought8,9 that in polar dielectrics the escape of the electrons from the ions can be a free-energy decreasing, and therefore spontaneous, process. In our approach, the electrons which escape are treated as quasi-free, and the question of the kinetics and mechanism of electron trapping arises. Diffusion kinetic calculations on the radiolysis of water10,11 suggest very high initial hydrated electron densities, which require fast trapping processes.

Original languageEnglish
Pages (from-to)1141-1142
Number of pages2
JournalNature
Volume217
Issue number5134
DOIs
Publication statusPublished - 1968

Fingerprint

electron radiation
trapping
electrons
escape
kinetics
autoionization
radiolysis
positive ions
ionizing radiation
free electrons
ions
free energy
defects

ASJC Scopus subject areas

  • General

Cite this

Self-trapping of radiation produced electrons. / Schiller, R.

In: Nature, Vol. 217, No. 5134, 1968, p. 1141-1142.

Research output: Contribution to journalArticle

Schiller, R. / Self-trapping of radiation produced electrons. In: Nature. 1968 ; Vol. 217, No. 5134. pp. 1141-1142.
@article{d6a33a1bedb84560a5890bc3955d955f,
title = "Self-trapping of radiation produced electrons",
abstract = "THE problem treated here is the trapping of free electrons produced by ionizing radiation in dielectric systems. Detailed theoretical descriptions of the equilibrium properties of the solvated electron are available1-3, but its formation is still under discussion. Electrons are formed and thermalized in the coulomb field of the positive ions, but not fully recaptured by the ions. Magee4 considered the auto-ionization of the H3O radicals as a possible secondary source of electrons; Freeman5-7 assumed the electrons to be trapped in the defect sites of the medium at the instant of thermalization, while we thought8,9 that in polar dielectrics the escape of the electrons from the ions can be a free-energy decreasing, and therefore spontaneous, process. In our approach, the electrons which escape are treated as quasi-free, and the question of the kinetics and mechanism of electron trapping arises. Diffusion kinetic calculations on the radiolysis of water10,11 suggest very high initial hydrated electron densities, which require fast trapping processes.",
author = "R. Schiller",
year = "1968",
doi = "10.1038/2171141a0",
language = "English",
volume = "217",
pages = "1141--1142",
journal = "Nature",
issn = "0028-0836",
publisher = "Nature Publishing Group",
number = "5134",

}

TY - JOUR

T1 - Self-trapping of radiation produced electrons

AU - Schiller, R.

PY - 1968

Y1 - 1968

N2 - THE problem treated here is the trapping of free electrons produced by ionizing radiation in dielectric systems. Detailed theoretical descriptions of the equilibrium properties of the solvated electron are available1-3, but its formation is still under discussion. Electrons are formed and thermalized in the coulomb field of the positive ions, but not fully recaptured by the ions. Magee4 considered the auto-ionization of the H3O radicals as a possible secondary source of electrons; Freeman5-7 assumed the electrons to be trapped in the defect sites of the medium at the instant of thermalization, while we thought8,9 that in polar dielectrics the escape of the electrons from the ions can be a free-energy decreasing, and therefore spontaneous, process. In our approach, the electrons which escape are treated as quasi-free, and the question of the kinetics and mechanism of electron trapping arises. Diffusion kinetic calculations on the radiolysis of water10,11 suggest very high initial hydrated electron densities, which require fast trapping processes.

AB - THE problem treated here is the trapping of free electrons produced by ionizing radiation in dielectric systems. Detailed theoretical descriptions of the equilibrium properties of the solvated electron are available1-3, but its formation is still under discussion. Electrons are formed and thermalized in the coulomb field of the positive ions, but not fully recaptured by the ions. Magee4 considered the auto-ionization of the H3O radicals as a possible secondary source of electrons; Freeman5-7 assumed the electrons to be trapped in the defect sites of the medium at the instant of thermalization, while we thought8,9 that in polar dielectrics the escape of the electrons from the ions can be a free-energy decreasing, and therefore spontaneous, process. In our approach, the electrons which escape are treated as quasi-free, and the question of the kinetics and mechanism of electron trapping arises. Diffusion kinetic calculations on the radiolysis of water10,11 suggest very high initial hydrated electron densities, which require fast trapping processes.

UR - http://www.scopus.com/inward/record.url?scp=36949060064&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36949060064&partnerID=8YFLogxK

U2 - 10.1038/2171141a0

DO - 10.1038/2171141a0

M3 - Article

VL - 217

SP - 1141

EP - 1142

JO - Nature

JF - Nature

SN - 0028-0836

IS - 5134

ER -