On ionization energy losses of ultra-relativistic half-bare electron

The problem of ionization energy losses of relativistic electron after its emission from substance into vacuum and subsequent traversal of thin dielectric plate is considered. It is shown that with the increase of distance between the plate and the substance the gradual increase of electron ionizati...

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Bibliographic Details
Published in:Physics letters. A 2012-11, Vol.376 (47-48), p.3572-3574
Main Authors: Shulʼga, N.F., Trofymenko, S.V.
Format: Article
Language:English
Subjects:
Density effect
Dielectrics
Emission
Half-bare electron
Ionization
Ionization energy losses
Reconstruction
Solid state physics
Trajectories
Transition radiation
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Summary:The problem of ionization energy losses of relativistic electron after its emission from substance into vacuum and subsequent traversal of thin dielectric plate is considered. It is shown that with the increase of distance between the plate and the substance the gradual increase of electron ionization energy losses in the plate from the value defined by Fermi formula to the value defined by Bethe–Bloch formula complemented by radiation contribution to ionization occurs. It is highlighted that such change of energy losses is defined by reconstruction of the field around the electron and may occur on macroscopic distances along its trajectory. ► High-energy electron emitted from substance traverses thin dielectric plate in vacuum. ► Ionization made in the plate situated on distance z from substance is considered. ► Increase of ionization from Fermi to Bethe–Bloch mode with the increase of z occurs. ► Ionization reconstruction occurs on large macroscopic distances.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2012.10.047