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PLASMON EFFECTS IN SOLID-STATE RADIATION DETECTORS

CHOY, TC; STONEHAM, AM; (1993) PLASMON EFFECTS IN SOLID-STATE RADIATION DETECTORS. EUROPHYS LETT , 23 (2) 99 - 104. 10.1209/0295-5075/23/2/004. Green open access

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Abstract

We have examined the role of plasmons on the electron energy response of solid-state (Si and Ge) radiation detectors. We found that at the level of parts per thousand, internal-conversion electron calibration techniques do not suffice to yield an adequate response function. In particular, spectral distortions in the detection of low-energy beta-particles have been found which are not accounted for by the usual calibration methods. Thus, a small but significant error can arise from energy loss to low-energy plasmons in Si and Ge detectors. The proximity of the plasmon energy to the end-point singularity and the quadratic form of the beta-decay spectrum may account for the effect interpreted as a 17 keV neutrino. Similar errors can also arise in other subtle solid-state measurements as, for example, in the X-ray edge absorption and emission spectra of metals and semiconductors.

Type: Article
Title: PLASMON EFFECTS IN SOLID-STATE RADIATION DETECTORS
Open access status: An open access version is available from UCL Discovery
DOI: 10.1209/0295-5075/23/2/004
Publisher version: http://dx.doi.org/10.1209/0295-5075/23/2/004
Language: English
Additional information: Text made available to UCL Discovery by kind permission of IOP Publishing, 2012
Keywords: SEMICONDUCTOR DETECTORS, ENERGY LOSS AND ENERGY RANGE RELATIONS, EXCHANGE, CORRELATION, DIELECTRIC AND MAGNETIC FUNCTIONS, PLASMONS, 17-KEV NEUTRINO, BETA-SPECTRUM
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: https://discovery.ucl.ac.uk/id/eprint/59608
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