Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals

H. K. Mao, A. P. Jephcoat, R. J. Hemley, L. W. Finger, C. S. Zha, R. M. Hazen, D. E. Cox

Research output: Contribution to journalArticle

109 Citations (Scopus)

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 languageEnglish
Pages (from-to)1131-1134
Number of pages4
JournalScience
Volume239
Issue number4844
Publication statusPublished - 1988
Externally publishedYes

Fingerprint

synchrotrons
x ray diffraction
single crystals
hydrogen
equations of state
anisotropy
crystal structure
room temperature
curves
x rays
temperature

ASJC Scopus subject areas

  • General

Cite this

Mao, H. K., Jephcoat, A. P., Hemley, R. J., Finger, L. W., Zha, C. S., Hazen, R. M., & Cox, D. E. (1988). Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals. Science, 239(4844), 1131-1134.

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 journalArticle

Mao, HK, Jephcoat, AP, Hemley, RJ, Finger, LW, Zha, CS, Hazen, RM & Cox, DE 1988, 'Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals', Science, vol. 239, no. 4844, pp. 1131-1134.
Mao HK, Jephcoat AP, Hemley RJ, Finger LW, Zha CS, Hazen RM et al. Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals. Science. 1988;239(4844):1131-1134.
Mao, H. K. ; Jephcoat, A. P. ; Hemley, R. J. ; Finger, L. W. ; Zha, C. S. ; Hazen, R. M. ; Cox, D. E. / Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals. In: Science. 1988 ; Vol. 239, No. 4844. pp. 1131-1134.
@article{394ec64e16ae4d8bb516d332a5ca580e,
title = "Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 gigapascals",
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.",
author = "Mao, {H. K.} and Jephcoat, {A. P.} and Hemley, {R. J.} and Finger, {L. W.} and Zha, {C. S.} and Hazen, {R. M.} and Cox, {D. E.}",
year = "1988",
language = "English",
volume = "239",
pages = "1131--1134",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "4844",

}

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 -