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Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy

M Sturm, M Schlösser, R. J Lewis, B Bornschein, G Drexlin, H. H Telle, Helmut Telle

Laser Physics, Volume: 20, Issue: 2, Pages: 493 - 507

Swansea University Author: Helmut Telle

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DOI (Published version): 10.1134/S1054660X10030163

Abstract

We have recorded Raman spectra for all hydrogen isotopologues, using a CW Nd:YVO<sub>4</sub> laser (5 W output power at 532 nm) and a high-throughput (f/1.8) spectrograph coupled to a Peltier-cooled (200 K) CCD-array detector (512x2048 pixels). A (static) gas cell was used in all measure...

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Published in: Laser Physics
ISSN: 1054-660X 1555-6611
Published: 2010
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URI: https://cronfa.swan.ac.uk/Record/cronfa1163
first_indexed 2013-07-23T11:46:29Z
last_indexed 2019-06-13T18:55:37Z
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spelling 2019-06-13T17:48:31.6559072 v2 1163 2012-02-23 Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy 7f645d598f0afb573309bc5f86ea46fa Helmut Telle Helmut Telle true false 2012-02-23 We have recorded Raman spectra for all hydrogen isotopologues, using a CW Nd:YVO<sub>4</sub> laser (5 W output power at 532 nm) and a high-throughput (f/1.8) spectrograph coupled to a Peltier-cooled (200 K) CCD-array detector (512x2048 pixels). A (static) gas cell was used in all measurements. We investigated (i) “pure” fillings of the homonuclear isotopologues H<sub>2</sub>, D<sub>2</sub>, and T<sub>2</sub>; (ii) equilibrated binary fillings of H<sub>2</sub>+D<sub>2</sub>, H<sub>2</sub>+T<sub>2</sub>, and D<sub>2</sub>+T<sub>2</sub>, thus providing the heteronuclear isotopologues HD, HT and DT in a controlled manner; and (iii) general mixtures containing all isotopologues at varying concentration levels. Cell fillings within the total pressure range 13–985 mbar were studied, in order to determine the dynamic range of the Raman system and the detection limits for all isotopologues. Spectra were recorded for an accumulation period of 1000 s. The preliminary data evaluation was based on simple peak-height analysis of the ro-vibrational Q1-branches, yielding 3σ measurement sensitivities of 5x10<super>–3</super>, 7x10<super>–3</super>, and 25x10<super>–3</super> mbar for the tritium-containing isotopologues T<sub>2</sub>, DT, and HT, respectively. These three isotopologues are the relevant ones for the KATRIN experiment and in the ITER fusion fuel cycle. While the measurements reported here were carried out with static-gas fillings, the cells are also ready for use with flowing-gas samples. Journal Article Laser Physics 20 2 493 507 1054-660X 1555-6611 28 2 2010 2010-02-28 10.1134/S1054660X10030163 COLLEGE NANME COLLEGE CODE Swansea University 2019-06-13T17:48:31.6559072 2012-02-23T17:01:47.0000000 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics M Sturm 1 M Schlösser 2 R. J Lewis 3 B Bornschein 4 G Drexlin 5 H. H Telle 6 Helmut Telle 7
title Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
spellingShingle Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
Helmut Telle
title_short Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
title_full Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
title_fullStr Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
title_full_unstemmed Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
title_sort Monitoring of all hydrogen isotopologues at tritium laboratory Karlsruhe using Raman spectroscopy
author_id_str_mv 7f645d598f0afb573309bc5f86ea46fa
author_id_fullname_str_mv 7f645d598f0afb573309bc5f86ea46fa_***_Helmut Telle
author Helmut Telle
author2 M Sturm
M Schlösser
R. J Lewis
B Bornschein
G Drexlin
H. H Telle
Helmut Telle
format Journal article
container_title Laser Physics
container_volume 20
container_issue 2
container_start_page 493
publishDate 2010
institution Swansea University
issn 1054-660X
1555-6611
doi_str_mv 10.1134/S1054660X10030163
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 0
active_str 0
description We have recorded Raman spectra for all hydrogen isotopologues, using a CW Nd:YVO<sub>4</sub> laser (5 W output power at 532 nm) and a high-throughput (f/1.8) spectrograph coupled to a Peltier-cooled (200 K) CCD-array detector (512x2048 pixels). A (static) gas cell was used in all measurements. We investigated (i) “pure” fillings of the homonuclear isotopologues H<sub>2</sub>, D<sub>2</sub>, and T<sub>2</sub>; (ii) equilibrated binary fillings of H<sub>2</sub>+D<sub>2</sub>, H<sub>2</sub>+T<sub>2</sub>, and D<sub>2</sub>+T<sub>2</sub>, thus providing the heteronuclear isotopologues HD, HT and DT in a controlled manner; and (iii) general mixtures containing all isotopologues at varying concentration levels. Cell fillings within the total pressure range 13–985 mbar were studied, in order to determine the dynamic range of the Raman system and the detection limits for all isotopologues. Spectra were recorded for an accumulation period of 1000 s. The preliminary data evaluation was based on simple peak-height analysis of the ro-vibrational Q1-branches, yielding 3σ measurement sensitivities of 5x10<super>–3</super>, 7x10<super>–3</super>, and 25x10<super>–3</super> mbar for the tritium-containing isotopologues T<sub>2</sub>, DT, and HT, respectively. These three isotopologues are the relevant ones for the KATRIN experiment and in the ITER fusion fuel cycle. While the measurements reported here were carried out with static-gas fillings, the cells are also ready for use with flowing-gas samples.
published_date 2010-02-28T03:06:07Z
_version_ 1821373122278850560
score 11.04748

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