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 about 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. 3 figs.
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 4201692; A
- Application Number:
- PPN: US 6-005263
- OSTI ID:
- 7254823
- Resource Relation:
- Patent File Date: 22 Jan 1979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Gas mixtures for gas-filled particle detectors
Gas mixtures for gas-filled particle detectors
Related Subjects
DRIFT CHAMBERS
DESIGN
PARTICLE IDENTIFICATION
ARGON
CHEMICAL COMPOSITION
MIXTURES
DISPERSIONS
ELEMENTS
FLUIDS
GASES
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
NONMETALS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RARE GASES
440104* - Radiation Instrumentation- High Energy Physics Instrumentation