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Media type:
E-Article
Title:
An inverse photoemission system with large solid angle of detection and adjustable optical bandpass
Contributor:
Lipton-Duffin, J. A.;
Mark, A. G.;
Mullins, G. K.;
Contant, G. E.;
McLean, A. B.
imprint:
AIP Publishing, 2004
Published in:Review of Scientific Instruments
Language:
English
DOI:
10.1063/1.1637435
ISSN:
0034-6748;
1089-7623
Origination:
Footnote:
Description:
<jats:p>A high-brightness, low energy electron source and dual Geiger–Müller-type isochromat photon detectors are combined to create a versatile new inverse photoemission system. The bandpass of the photon detector can be set to one of the following discrete values: 0.37±0.02, 0.43±0.02, 0.56±0.02, or 0.73±0.04 eV by using ethanol, 1-propanol, 1-butanol, or a dimethyl ether/ethanol mixture, respectively, as the detection gas(es). All of the alcohols are self-quenching and do not require the addition of a quench gas. The design of the photon detectors, the electron gun, and the circuits that perform the dead time gating are described in detail. The capabilities of the new system are illustrated using spectra from both metal (Cu) and semiconductor (Si) surfaces.</jats:p>