Gas mixtures for gas-filled particle detectors
Improved binary and tertiary gas mixtures for gas-filled particle detectors are provided. The components are chosen on the basis of the principle that the first component is one gas or mixture of two gases having a large electron scattering cross section at energies of about 0.5 eV and higher, and the second component is a gas (Ar) having a very small cross section at and below aout 0.5 eV, whereby fast electrons in the gaseous mixture are slowed into the energy range of about 0.5 eV where the cross section for the mixture is small and hence the electron mean free path is large. The reduction in both the cross section and the electron energy results in an increase in the drift velocity of the electrons in the gas mixtures over that for the separate components for a range of E/P (pressure-reduced electron field) values. Several gas mixtures are provided that provide faster response in gas-filled detectors for convenient E/P ranges as compared with conventional gas mixtures.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4201692
- Application Number:
- TRN: 80-014783
- OSTI ID:
- 5222105
- Resource Relation:
- Patent File Date: Filed date 22 Jan 1979; Other Information: PAT-APPL-5,263
- Country of Publication:
- United States
- Language:
- English
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Improved gas mixtures for gas-filled particle detectors
Gas mixtures for gas-filled particle detectors
Related Subjects
CHARGED PARTICLE DETECTION
RADIATION DETECTORS
GASES
ACETYLENE
ARGON
CARBON FLUORIDES
ELECTRON DRIFT
METHANE
ALKANES
ALKYNES
CARBON COMPOUNDS
CRYOGENIC FLUIDS
DETECTION
ELEMENTS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
MEASURING INSTRUMENTS
NONMETALS
ORGANIC COMPOUNDS
RADIATION DETECTION
RARE GASES
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments