High efficiency photoionization detector

Patent · Sat Dec 31 23:00:00 EST 1983

OSTI ID:864855

Anderson, David F ^[1]

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1. 3055 Trinity, Los Alamos, NM 87544

A high efficiency photoionization detector using tetraaminoethylenes in a gaseous state having a low ionization potential and a relative photoionization cross section which closely matches the emission spectrum of xenon gas. Imaging proportional counters are also disclosed using the novel photoionization detector of the invention. The compound of greatest interest is TMAE which comprises tetrakis(dimethylamino)ethylene which has a measured ionization potential of 5.36.+-.0.02 eV, and a vapor pressure of 0.35 torr at 20.degree. C.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: Anderson, David F. (3055 Trinity, Los Alamos, NM 87544)
• Patent Number(s): US 4429228
• OSTI ID: 864855
• Country of Publication: United States
• Language: English

Related Subjects

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02
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35
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closely
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compound
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counters
degree
detector
dimethylamino
disclosed
efficiency
efficiency photoionization
emission
emission spectrum
ethylene
gas
gaseous
imaging
ionization
ionization detector
ionization potential
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measured
novel
photoionization
photoionization detector
potential
pressure
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proportional counters
relative
section
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tetraaminoethylenes
tetrakis
tmae
torr
vapor
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xenon