Abstract
The crystal structure and equation of state of solid hydrogen have been determined directly to 26.5 gigapascals at room temperature by new synchrotron x-ray diffraction techniques. Solid hydrogen remains in the hexagonal close-packed structure under these pressure-temperature conditions and exhibits increasing structural anisotropy with pressure. The pressure-volume curve determined from the x-ray data represents the most accurate experimental measurement of the equation of state to date in this pressure range. The results remove the discrepancy between earlier indirect determinations and provide a new experimental constraint on the molecular-to-atomic transition redicted at higher pressures.
| Original language | English |
|---|---|
| Pages (from-to) | 1131-1134 |
| Number of pages | 4 |
| Journal | Science |
| Volume | 239 |
| Issue number | 4844 |
| Publication status | Published - 1988 |
| Externally published | Yes |
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Cite this
Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals. / Mao, H. K.; Jephcoat, A. P.; Hemley, R. J.; Finger, L. W.; Zha, C. S.; Hazen, R. M.; Cox, D. E.
In: Science, Vol. 239, No. 4844, 1988, p. 1131-1134.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals
AU - Mao, H. K.
AU - Jephcoat, A. P.
AU - Hemley, R. J.
AU - Finger, L. W.
AU - Zha, C. S.
AU - Hazen, R. M.
AU - Cox, D. E.
PY - 1988
Y1 - 1988
N2 - The crystal structure and equation of state of solid hydrogen have been determined directly to 26.5 gigapascals at room temperature by new synchrotron x-ray diffraction techniques. Solid hydrogen remains in the hexagonal close-packed structure under these pressure-temperature conditions and exhibits increasing structural anisotropy with pressure. The pressure-volume curve determined from the x-ray data represents the most accurate experimental measurement of the equation of state to date in this pressure range. The results remove the discrepancy between earlier indirect determinations and provide a new experimental constraint on the molecular-to-atomic transition redicted at higher pressures.
AB - The crystal structure and equation of state of solid hydrogen have been determined directly to 26.5 gigapascals at room temperature by new synchrotron x-ray diffraction techniques. Solid hydrogen remains in the hexagonal close-packed structure under these pressure-temperature conditions and exhibits increasing structural anisotropy with pressure. The pressure-volume curve determined from the x-ray data represents the most accurate experimental measurement of the equation of state to date in this pressure range. The results remove the discrepancy between earlier indirect determinations and provide a new experimental constraint on the molecular-to-atomic transition redicted at higher pressures.
UR - http://www.scopus.com/inward/record.url?scp=0001519959&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001519959&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0001519959
VL - 239
SP - 1131
EP - 1134
JO - Science
JF - Science
SN - 0036-8075
IS - 4844
ER -