Self-trapping of radiation produced electrons

Self-trapping of radiation produced electrons

Play all audios:

Loading...

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. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS DISTRIBUTION OF ABSORBED PHOTONS IN THE TUNNELING IONIZATION PROCESS Article Open access 17 February 2021 RADIATION DAMAGE BY EXTENSIVE LOCAL WATER IONIZATION FROM TWO-STEP ELECTRON-TRANSFER-MEDIATED DECAY OF SOLVATED IONS Article Open access 24 August 2023 RADIATIVE LOSS OF COHERENCE IN FREE ELECTRONS: A LONG-RANGE QUANTUM PHENOMENON Article Open access 26 January 2024 REFERENCES * Davydov, A. S., _Zh. Exp. Teor. Fiz._, 18, 913 (1948). CAS  Google Scholar  * Deigen, M. F., _Zh. Exp. Teor. Fiz._, 26, 293 (1954). CAS  Google Scholar  * Jortner, J., _Radiat. Res. Suppl._, 4, 24 (1964). Article  CAS  Google Scholar  * Magee, J. L., _Radiat. Res. Suppl._, 4, 21 (1964). Google Scholar  * Freeman, G. R., and Fayadh, J. M., _J. Chem. Phys._, 43, 86 (1965). Article  ADS  CAS  Google Scholar  * Freeman, G. R., _J. Chem. Phys._, 43, 93 (1965). Article  ADS  CAS  Google Scholar  * Freeman, G. R., _J. Chem. Phys._, 46, 2822 (1967). Article  ADS  CAS  Google Scholar  * Schiller, R., _J. Chem. Phys._, 43, 2760 (1965). Article  ADS  CAS  Google Scholar  * Schiller, R., _J. Chem. Phys._, 47, 2278 (1967). Article  ADS  CAS  Google Scholar  * Schwarz, H. A., _Rad. Res. Suppl._, 4, 106 (1964). Article  Google Scholar  * Kuppermann, A., in _Radiat. Res._ (edit. by Silini, G.), 212 (North-Holland Publ. Co., Amsterdam, 1967). Google Scholar  * Schiller, R., _J. Chem. Phys._, 47, 2281 (1967). Article  ADS  CAS  Google Scholar  * Platzman, R. L., _Physical and Chemical Aspects of Basic Mechanism in Radiobiology_, 22 (Nat. Res. Coun., Washington, 1953). Google Scholar  * Boag, J. W., in _Rad. Res._ (edit. by Silini, G.), 43 (North-Holland Publ. Co., Amsterdam, 1967). Google Scholar  * Auty, R. P., and Cole, R. H., _J. Chem. Phys._, 20, 1309 (1952). Article  ADS  CAS  Google Scholar  * Fröhlich, H., _Theory of Dielectrics_ (Oxford University Press, Oxford, 1950). Google Scholar  Download references AUTHOR INFORMATION Author notes * R. SCHILLER: Walter Dale fellow, 1967–68. AUTHORS AND AFFILIATIONS * Paterson Laboratories, Christie Hospital and Holt Radium Institute, Manchester R. SCHILLER * Central Research Institute for Physics, Budapest, Hungary R. SCHILLER Authors * R. SCHILLER View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE SCHILLER, R. Self-trapping of Radiation Produced Electrons. _Nature_ 217, 1141–1142 (1968). https://doi.org/10.1038/2171141a0 Download citation * Received: 12 December 1967 * Issue Date: 23 March 1968 * DOI: https://doi.org/10.1038/2171141a0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative

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. Access through your institution Buy or subscribe This is a preview


of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only


$3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout


ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS DISTRIBUTION OF ABSORBED


PHOTONS IN THE TUNNELING IONIZATION PROCESS Article Open access 17 February 2021 RADIATION DAMAGE BY EXTENSIVE LOCAL WATER IONIZATION FROM TWO-STEP ELECTRON-TRANSFER-MEDIATED DECAY OF


SOLVATED IONS Article Open access 24 August 2023 RADIATIVE LOSS OF COHERENCE IN FREE ELECTRONS: A LONG-RANGE QUANTUM PHENOMENON Article Open access 26 January 2024 REFERENCES * Davydov, A.


S., _Zh. Exp. Teor. Fiz._, 18, 913 (1948). CAS  Google Scholar  * Deigen, M. F., _Zh. Exp. Teor. Fiz._, 26, 293 (1954). CAS  Google Scholar  * Jortner, J., _Radiat. Res. Suppl._, 4, 24


(1964). Article  CAS  Google Scholar  * Magee, J. L., _Radiat. Res. Suppl._, 4, 21 (1964). Google Scholar  * Freeman, G. R., and Fayadh, J. M., _J. Chem. Phys._, 43, 86 (1965). Article  ADS


  CAS  Google Scholar  * Freeman, G. R., _J. Chem. Phys._, 43, 93 (1965). Article  ADS  CAS  Google Scholar  * Freeman, G. R., _J. Chem. Phys._, 46, 2822 (1967). Article  ADS  CAS  Google


Scholar  * Schiller, R., _J. Chem. Phys._, 43, 2760 (1965). Article  ADS  CAS  Google Scholar  * Schiller, R., _J. Chem. Phys._, 47, 2278 (1967). Article  ADS  CAS  Google Scholar  *


Schwarz, H. A., _Rad. Res. Suppl._, 4, 106 (1964). Article  Google Scholar  * Kuppermann, A., in _Radiat. Res._ (edit. by Silini, G.), 212 (North-Holland Publ. Co., Amsterdam, 1967). Google


Scholar  * Schiller, R., _J. Chem. Phys._, 47, 2281 (1967). Article  ADS  CAS  Google Scholar  * Platzman, R. L., _Physical and Chemical Aspects of Basic Mechanism in Radiobiology_, 22 (Nat.


Res. Coun., Washington, 1953). Google Scholar  * Boag, J. W., in _Rad. Res._ (edit. by Silini, G.), 43 (North-Holland Publ. Co., Amsterdam, 1967). Google Scholar  * Auty, R. P., and Cole,


R. H., _J. Chem. Phys._, 20, 1309 (1952). Article  ADS  CAS  Google Scholar  * Fröhlich, H., _Theory of Dielectrics_ (Oxford University Press, Oxford, 1950). Google Scholar  Download


references AUTHOR INFORMATION Author notes * R. SCHILLER: Walter Dale fellow, 1967–68. AUTHORS AND AFFILIATIONS * Paterson Laboratories, Christie Hospital and Holt Radium Institute,


Manchester R. SCHILLER * Central Research Institute for Physics, Budapest, Hungary R. SCHILLER Authors * R. SCHILLER View author publications You can also search for this author inPubMed 


Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE SCHILLER, R. Self-trapping of Radiation Produced Electrons. _Nature_ 217, 1141–1142


(1968). https://doi.org/10.1038/2171141a0 Download citation * Received: 12 December 1967 * Issue Date: 23 March 1968 * DOI: https://doi.org/10.1038/2171141a0 SHARE THIS ARTICLE Anyone you


share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the


Springer Nature SharedIt content-sharing initiative