Analyzer for determining helium-4 in the part-per-billion range
Abstract
A trace helium analyzer for determining helium-4 in the parts-per-billion range has been developed. The instrument is used for anayzing pure gases, laboratory-prepared standards, and atmospheric samples. The analyzer consists of a modified helium leak detector mass spectrometer, a laboratory-built sample inlet system, and a liquid nitrogen cooled charcoal trap. A programmable integrator and event control module make automatic operation possible. The portability of the analyzer allows it to be used in the field.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1984
- Bibcode:
- 1984STIN...8430272H
- Keywords:
-
- Automatic Control;
- Gas Analysis;
- Gas Detectors;
- Helium;
- Mass Spectrometers;
- Portable Equipment;
- Air Sampling;
- Integrators;
- Leakage;
- Liquid Nitrogen;
- Trace Elements;
- Instrumentation and Photography