| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Temperature Measurements of Condensed Gaseous Hydrogen-Helium Mixtures under Multi-Shock Compression |
| GU Yun-Jun, CHEN Qi-Feng, CAI Ling-Cang, CHEN Zhi-Yun, ZHENG Jun |
| National Key Laboratory of Shock Wave and Detonation Physics Research,Institute of Fluid Physics, China Academy of Engineering Physics, PO Box 919-102, Mianyang 621900 |
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| Cite this article: |
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GU Yun-Jun, CHEN Qi-Feng, CAI Ling-Cang et al 2009 Chin. Phys. Lett. 26 085101 |
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Abstract Temperatures of multi-shock compressed gaseous hydrogen--helium mixtures with a mole component H2:He=1:1.21 up to 7100K are measured at pressures up to 10GPa by means of an instantaneous optical pyrometer. The gas mixtures are shocked from environmental temperature at the initial pressure 20MPa. The measured second-shock temperature differs from the predictions of the non-dissociation model by up to 40% and is in good agreement with that of the dissociation model, indicating that a considerable amount of molecular dissociation occurs.
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| Keywords:
51.30.+i
62.50.-p
64.30.-t
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Received: 03 March 2009
Published: 30 July 2009
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| PACS: |
51.30.+i
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(Thermodynamic properties, equations of state)
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62.50.-p
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(High-pressure effects in solids and liquids)
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64.30.-t
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(Equations of state of specific substances)
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