Field ionizers as molecular beam detectors
作者:
John W. McWane,
Daniel E. Oates,
期刊:
Review of Scientific Instruments
(AIP Available online 1974)
卷期:
Volume 45,
issue 9
页码: 1145-1148
ISSN:0034-6748
年代: 1974
DOI:10.1063/1.1686828
出版商: AIP
数据来源: AIP
摘要:
The operating characteristics of field ionizing tungsten tips used as detectors of low temperature beams of3He and4He are presented. These include typical I‐V characteristics, effective detection area, conditions for fast ionization time, and details necessary for reliable detector performance. In addition, we report that, under our operating conditions the detection efficiency was independent of the incident atom velocity. This is in contradiction to predictions from current field ionization theory.
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