Distillation of HD gas and measurement of spin–lattice relaxation times
The polarization (static or dynamic) of HD material requires very pure HD samples, with H 2 and D 2 impurities concentrations smaller than 0.1%. A new distillation apparatus equipped with a mass spectrometer has been built. It allows reaching such a level of purity and also measurement of the H 2 an...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2009-08, Vol.607 (2), p.271-278 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The polarization (static or dynamic) of
HD material requires very pure
HD samples, with
H
2
and
D
2
impurities concentrations smaller than 0.1%. A new distillation apparatus equipped with a mass spectrometer has been built. It allows reaching such a level of purity and also measurement of the
H
2
and
D
2
residual concentrations down to 0.05%. The NMR spin–lattice relaxation times
T
1
H
and
T
1
D
have also been measured. The apparatus is described as well as the distillation method.
T
1
H
and
T
1
D
data as a function of
[
H
2
]
and
[
D
2
]
concentrations are given, at 0.85
T and 1.8
K. |
|---|---|
| ISSN: | 0168-9002 1872-9576 |
| DOI: | 10.1016/j.nima.2009.04.055 |