RELATIVE SCINTILLATION EFFICIENCIES OF NOBLE GAS MIXTURES
An investigation has been made of the relative amounts of scintillation light emitted from mixtures of the noble gases during tbe 0.5 mu sec interval following the stopping of an alpha -particle. A bellows pump and a hot uranium furance in a closed circulation system maintained gas purtty. A diphenyl stilbene coating on the photomultiplier tube and the walls of the scintillation volume acted as a wavelength shifter for the primary ultraviolet radiation. Data on the efficiency of various proportions of binary combinations of xenon, krypton, argon, neon, and helium are presented. They show a characteristic large drop in the light for mixtures contalning a small proportion of the heavier gas in a major fraction of the lighter. These results may be qualitatively interpreted in terms of noble gas molecular ion formation. The large light output of the 10% Xe-90% He mixture might be useful in constructing a neutron spectrometer of high efficiency using the He/sup 3/(n,p)H/sup 3/ reaction. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- NSA Number:
- NSA-13-002333
- OSTI ID:
- 4278796
- Journal Information:
- Nuclear Instr., Journal Name: Nuclear Instr. Vol. Vol: 3
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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ARGON
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EMISSION
FREQUENCY
FURNACES
HELIUM
HELIUM 3
IONS
KRYPTON
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MASS
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MIXING
MOLECULES
NEON
NEUTRON DETECTION
NEUTRONS
NUCLEAR REACTIONS
PERFORMANCE
PHENYL RADICALS
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XENON