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Mass Spectrometer Method for Determining Parts Per billion Helium-3 in Helium.

Authors
Emerson-DE; Suttle-ET
Source
NTIS: PB 252 474 :10 pages
Link
NIOSHTIC No.
10007741
Abstract
The Bureau of Mines has developed a mass spectrometer method for determining the helium-3 content of high-purity helium. The work was performed to evaluate experimental methods for removing helium-3 from high-purity helium and to better determine the composition of pure helium used in research. This was accomplished by increasing the inlet sample pressure, ionizing current, and amplification of the current produced by the ions collected on a conventional mass spectrometer that had been modified. With these modifications, the helium-3 content was determined in the parts-per-million and parts- per-billion range in helium-4.
Publication Date
19760101
Document Type
IH; Report of Investigation;
Fiscal Year
1976
NTIS Accession No.
PB-252474
NTIS Price
A02
Identifying No.
RI 8119
NIOSH Division
HEFO;
Source Name
NTIS: PB 252 474
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