X-ray absorption fine structure studies on expanded fluid Se: from liquid to dense vapor
Journal of Non-Crystalline Solids Volume 250-252 Issue 2
Page 525-530
published_at 1999-08-01
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| File | |
| Title ( eng ) |
X-ray absorption fine structure studies on expanded fluid Se: from liquid to dense vapor
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| Creator |
Tamura Kozaburo
Hazemann J. L.
Raoux D.
Soldo Y.
Argoud R.
Jal J. F.
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| Source Title |
Journal of Non-Crystalline Solids
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| Volume | 250-252 |
| Issue | 2 |
| Start Page | 525 |
| End Page | 530 |
| Abstract |
X-ray absorption fine structure (XAFS) measurements for expanded fluid Se at high temperatures and pressures up to 1650°C and 600 bar have been carried out to investigate the change of local structure with volume expansion. The electronic property of fluid Se changes from a semiconducting one to metallic with increasing temperature and pressure. When the volume is further expanded, the fluid becomes non-metallic vapor. XAFS spectra of the non-metallic vapor shows that the vapor rarer than the critical density consists mainly of Se dimers. When the volume contracts exceeding the critical density, the first peak in the radial distribution function is shifted towards larger distance and is increasingly asymmetrical.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Elsevier Science B.V.
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| Date of Issued | 1999-08-01 |
| Rights |
Copyright (c) 1999 Elsevier Science B.V. All rights reserved.
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0022-3093
[DOI] 10.1016/S0022-3093(99)00285-9
[NCID] AA00703560
[DOI] http://dx.doi.org/10.1016/S0022-3093(99)00285-9
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