Collective excitations, optical properties and the stopping power of materials

We compare energy loss by ions and photons via electronic excitations in metals, insulators and semiconductors using optical data from synchrotron light-source measurements. The spectra of photon-induced transverse excitations differ markedly from those of longitudinal excitations by ions: photons g...

Full description

Saved in:
Bibliographic Details
Published inNuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 272; pp. 37 - 41
Main Authors Karstens, W., Smith, D.Y.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2012
Subjects
Electronics
Energy loss by ions
Excitation
Excitation spectra
Insulators
Ionizing radiation
Photons
Semiconductors
Spectra
Stopping power
Synchrotrons
Energy loss by ions
Stopping power
Ionizing radiation
Online AccessGet full text

Cover

More Information
Summary:We compare energy loss by ions and photons via electronic excitations in metals, insulators and semiconductors using optical data from synchrotron light-source measurements. The spectra of photon-induced transverse excitations differ markedly from those of longitudinal excitations by ions: photons give up all their energy to a single electronic excitation; charged particles produce a broad spectrum of excitations shifted toward higher energies by collective effects. The widths of these collective-mode resonances in insulators and semiconductors are significantly greater than those in metals reflecting shorter collective-mode lifetimes.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2011.01.028