SHOCK TEMPERATURES AND MELTING OF IRON AT EARTH CORE CONDITIONS

被引：281

作者：

YOO, CS ^{[1
]}

HOLMES, NC ^{[1
]}

ROSS, M ^{[1
]}

WEBB, DJ ^{[1
]}

PIKE, C ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.70.3931

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature of shock compressed iron has been measured to 340 GPa, using well characterized iron films sputtered on transparent diamond substrates and a 1 ns time-resolved optical method. We find a knee on the (P,T) iron Hugoniot indicating melting at 6350 K and 235 GPa and at 6720 K and 300 GPa. An extrapolation yields an iron melting temperature of 6830 (+/- 500) K at 330 GPa, the pressure of the Earth inner-outer core boundary. Implication of the melting data for the iron phase diagram is also discussed.

引用

页码：3931 / 3934

页数：4

共 31 条

[1] THE HIGH-PRESSURE TRIPLE POINTS OF IRON AND THEIR EFFECTS ON THE HEAT-FLOW FROM THE EARTH CORE
ANDERSON, OL
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1990, 95 (B13): : 21697 - 21707
[2] Bass J.D, 1987, HIGH PRESSURE RES MI, P393, DOI DOI 10.1029/GM039
[3] NITROGEN IN DIAMOND - EVIDENCE FROM THERMAL-CONDUCTIVITY
BERMAN, R
HUDSON, PRW
MARTINEZ, M
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1975, 8 (21): : L430 - L434
[4] MELTING, THERMAL-EXPANSION, AND PHASE-TRANSITIONS OF IRON AT HIGH-PRESSURES
BOEHLER, R
VONBARGEN, N
CHOPELAS, A
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1990, 95 (B13): : 21731 - 21736
[5] BOEHLER R, IN PRESS
[6] MELTING OF IRON UNDER CORE CONDITIONS
BROWN, JM
MCQUEEN, RG
[J]. GEOPHYSICAL RESEARCH LETTERS, 1980, 7 (07) : 533 - 536
[7] PHASE-TRANSITIONS, GRUNEISEN-PARAMETER, AND ELASTICITY FOR SHOCKED IRON BETWEEN 77-GPA AND 400-GPA
BROWN, JM
MCQUEEN, RG
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1986, 91 (B7): : 7485 - 7494
[8] CARSLAW HS, 1959, CONDUCTION HEAT SOLI, P239
[9] GOVER R, 1974, J APPL PHYS, V45, P146
[10] THE EQUATION OF STATE OF PLATINUM TO 660GPA (6.6MBAR)
HOLMES, NC
MORIARTY, JA
GATHERS, GR
NELLIS, WJ
[J]. JOURNAL OF APPLIED PHYSICS, 1989, 66 (07) : 2962 - 2967

← 1 2 3 4 →