Helium Gas Scintillation [PDF]
Review of Scientific Instruments, 1965 A gas scintillation counter is described which operates to 40 atm pressure. An attempt was made to maximize the scintillation light output in helium. Helium scintillation properties studied with this counter include the effect of various wall-coating materials, gas-purity effects, the linearity of pulse height with energy, and the variation of pulse ...
Esterling, Robert J., Lipman, Norman H.
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Electron drift and longitudinal diffusion in high pressure xenon-helium gas mixtures [PDF]
Journal of Instrumentation, 2019 We report new measurements of the drift velocity and longitudinal diffusion coefficients of electrons in pure xenon gas and in xenon-helium gas mixtures at 1-9 bar and electric field strengths of 50-300 V/cm.
A. McDonald +3 more
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Classified characteristics of helium gas resources and controlling factors for the enrichment
Shiyou shiyan dizhi, 2023 The lack of helium resources accounts for the limited helium supply in China. It is of great significance to classify of helium-enriched natural gas according to the characteristics of helium reservoirs and the main controlling factors of helium ...
Xinjun CHEN +3 more
doaj +1 more source
Black-Body Radiation Correction to the Polarizability of Helium [PDF]
, 2011 The correction to the polarizability of helium due to black-body radiation is calculated near room temperature. A precise theoretical determination of the black-body radiation correction to the polarizability of helium is essential for dielectric gas ...
D. A. Varshalovich +4 more
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Helium Signatures of Natural Gas From the Dongpu Sag, Bohai Bay Basin, Eastern China
Frontiers in Earth Science, 2022 The Dongpu Sag is one of the important areas for oil and gas exploration in the Bohai Bay Basin, eastern China, and natural gas from different strata in the sag contain a certain amount of helium, with the geochemical characteristics and the implications
Chunhua Ni +15 more
doaj +1 more source
Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 2 : arc force determination [PDF]
, 2013 The transient variation of the shielding gas present in the alternating shielding gas process produces a dynamic action within the liquid weld metal. Flow vectors opposite in direction have been reported due to the various forces acting on the weld metal
Campbell, Stuart +2 more
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A case study of helium recovery from Australian natural gas
Case Studies in Chemical and Environmental Engineering, 2022 Helium occurs in commercial quantities in some natural gas fields and global production is dominated by the few countries that recover helium as a byproduct of natural gas.
Luke McElroy +3 more
doaj +1 more source
Rb*He_n exciplexes in solid 4_He [PDF]
, 2006 We report the observation of emission spectra from Rb*He_n exciplexes in solid 4He. Two different excitation channels were experimentally identified, viz., exciplex formation via laser excitation to the atomic 5P3/2 and to the 5P1/2 levels.
Hofer, A. +4 more
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Accurate Determination of the Absolute 3He/4He Ratio of a Synthesized Helium Standard Gas (Helium Standard of Japan, HESJ): Toward Revision of the Atmospheric 3He/4He Ratio [PDF]
Geochemistry Geophysics Geosystems, 2018 The helium standard of Japan, referred to as HESJ, is an interlaboratory standard for the 3He/4He ratio. While the ratio of 3He and 4He of the HESJ was previously determined by a relative comparison to atmospheric helium, the absolute value of the 3He ...
K. Mishima +6 more
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