Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior
Triple-point dewetting of pure gases like hydrogen and deuterium on solid substrates is a well-known phenomenon. This property persists even for the mixed system of H₂ and D₂. There exists an effective triple-point temperature T₃⁽mix⁾ , between the T₃ of pure H₂ and the one of pure D₂, which depends...
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| Published in: | Физика низких температур |
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| Date: | 2003 |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/128909 |
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| Cite this: | Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior / Stefan Tibus, Masoud Sohaili, Jürgen Klier, Paul Leiderer // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 970-974. — Бібліогр.: 12 назв. — англ. |
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Tibus, Stefan Sohaili, Masoud Klier, Jürgen Leiderer, Paul 2018-01-14T12:44:02Z 2018-01-14T12:44:02Z 2003 Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior / Stefan Tibus, Masoud Sohaili, Jürgen Klier, Paul Leiderer // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 970-974. — Бібліогр.: 12 назв. — англ. 0132-6414 PACS: 67.70.+n, 67.70.-s, 64.70.Dv, 64.75.+g https://nasplib.isofts.kiev.ua/handle/123456789/128909 Triple-point dewetting of pure gases like hydrogen and deuterium on solid substrates is a well-known phenomenon. This property persists even for the mixed system of H₂ and D₂. There exists an effective triple-point temperature T₃⁽mix⁾ , between the T₃ of pure H₂ and the one of pure D₂, which depends on the species concentrations. We present new investigations for a wide range of H₂–D₂ concentrations measured under different thermodynamic conditions. This allows us to map out T₃⁽mix⁾ as function of concentration, which can be different in the melting or solidifying direction. Furthermore, it turns out that the time the system needs to reach an equilibrium state can be very long and depends on concentration. This is not observed for the pure H₂ and D₂ system. Sometimes the relaxation times are so extremely long that significant hysteresis occurs during ramping the temperature, even if this is done very slowly on a scale of hours. This behavior can be understood on the basis of mixing and demixing processes. Possible differences in the species concentrations in the gas, liquid, and especially solid phase of the system are discussed. A preliminary phase diagram of the H₂–D₂ system is established. This work is supported by the Deutsche Forschungsgemeinschaft under grant Le 315/20 within the Priority Program «Wetting and Structure Formation at Interfaces». en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Physics in Quantum Crystals Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior Article published earlier |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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DSpace DC |
| title |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior |
| spellingShingle |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior Tibus, Stefan Sohaili, Masoud Klier, Jürgen Leiderer, Paul Physics in Quantum Crystals |
| title_short |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior |
| title_full |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior |
| title_fullStr |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior |
| title_full_unstemmed |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior |
| title_sort |
influence of the concentration of h₂–d₂ mixtures on their triple-point dewetting behavior |
| author |
Tibus, Stefan Sohaili, Masoud Klier, Jürgen Leiderer, Paul |
| author_facet |
Tibus, Stefan Sohaili, Masoud Klier, Jürgen Leiderer, Paul |
| topic |
Physics in Quantum Crystals |
| topic_facet |
Physics in Quantum Crystals |
| publishDate |
2003 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
Triple-point dewetting of pure gases like hydrogen and deuterium on solid substrates is a well-known phenomenon. This property persists even for the mixed system of H₂ and D₂. There exists an effective triple-point temperature T₃⁽mix⁾ , between the T₃ of pure H₂ and the one of pure D₂, which depends on the species concentrations. We present new investigations for a wide range of H₂–D₂ concentrations measured under different thermodynamic conditions. This allows us to map out T₃⁽mix⁾ as function of concentration, which can be different in the melting or solidifying direction. Furthermore, it turns out that the time the system needs to reach an equilibrium state can be very long and depends on concentration. This is not observed for the pure H₂ and D₂ system. Sometimes the relaxation times are so extremely long that significant hysteresis occurs during ramping the temperature, even if this is done very slowly on a scale of hours. This behavior can be understood on the basis of mixing and demixing processes. Possible differences in the species concentrations in the gas, liquid, and especially solid phase of the system are discussed. A preliminary phase diagram of the H₂–D₂ system is established.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128909 |
| citation_txt |
Influence of the concentration of H₂–D₂ mixtures on their triple-point dewetting behavior / Stefan Tibus, Masoud Sohaili, Jürgen Klier, Paul Leiderer // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 970-974. — Бібліогр.: 12 назв. — англ. |
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| first_indexed |
2025-12-07T20:30:01Z |
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2025-12-07T20:30:01Z |
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