Part A of two Project Reports: The other part is designated Part B: Industrial Project / <p>The channel electron multiplier is a radiation
detector suitable for the detection of 0.1-100 keV electrons
and atomic particles. Studies were made to determine
channeltron absolute efficiency as a function of input
particle rate, time, and incident energy. The efficiency
for electrons was found to vary from 90% for 1 keV electrons
to 50% for 4 keV electrons. The channeltron efficiency
was found to depend strongly on input rate below 50 counts
per second. Although the cause of this discrepency is
unclear, a possible explanation was developed involving
the secondary emission coefficient of the detector
multiplying surface.
The channeltron was subsequently used to detect
secondary electrons from gold foil bombarded with both
electrons and protons. By scattering the incident.
particles from a gold foil, the number of secondary
electrons generated was found to vary linearly with energy
from 2 to 11 keV. The possibility exists for use of the
foil-channeltron detector to count neutral atomic particles
with known efficiency. This has been a difficult problem
in the past. </p> / Thesis / Master of Engineering (MEngr)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/18330 |
| Date | January 1976 |
| Creators | Harvey, Stanley B. |
| Contributors | Robinson, J. E., Engineering Physics |
| Source Sets | McMaster University |
| Language | en_US |
| Detected Language | English |
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