How to make Raman-inactive helium visible in Raman spectra of tritium-helium gas mixtures

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · Fusion Science and Technology

DOI:https://doi.org/10.13182/FST14-T79· OSTI ID:22429766

Schloesser, M.; Pakari, O.; Rupp, S.; Mirz, S.; Fischer, S. ^[1]

---

1. Institute of Technical Physics, Tritium Laboratory Karlsruhe - TLK, Karlsruhe Institute of Technology - KIT, Karlsruhe (Germany)

Raman spectroscopy, a powerful method for the quantitative compositional analysis of molecular gases, e.g. mixtures of hydrogen isotopologues, is not able to detect monoatomic species like helium. This deficit can be overcome by using radioluminescence emission from helium atoms induced by β-electrons from tritium decay. We present theoretical considerations and combined Raman/radioluminescence spectra. Furthermore, we discuss the linearity of the method together with validation measurements for determining the pressure dependence. Finally, we conclude how this technique can be used for samples of helium with traces of tritium, and vice versa. (authors)

• OSTI ID: 22429766
• Journal Information: Fusion Science and Technology, Vol. 67, Issue 3; Conference: TRITIUM 2013: 10. International Conference on Tritium Science and Technology, Nice Acropolis (France), 21-25 Oct 2013; Other Information: Country of input: France; 16 refs.; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BETA DECAY
ELECTRONS
HELIUM
MIXTURES
RADIOLUMINESCENCE
RAMAN SPECTRA
RAMAN SPECTROSCOPY
TRITIUM