Measuring the melting curve of iron at super-Earth core conditions-Reference-Cited by-同舟云学术

Measuring the melting curve of iron at super-Earth core conditions

Published:2022-01-14 Issue:6577 Volume:375 Page:202-205
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kraus Richard G.¹^ORCID,Hemley Russell J.²^ORCID,Ali Suzanne J.¹^ORCID,Belof Jonathan L.¹^ORCID,Benedict Lorin X.¹,Bernier Joel¹^ORCID,Braun Dave¹,Cohen R. E.³^ORCID,Collins Gilbert W.⁴^ORCID,Coppari Federica¹^ORCID,Desjarlais Michael P.⁵^ORCID,Fratanduono Dayne¹^ORCID,Hamel Sebastien¹^ORCID,Krygier Andy¹^ORCID,Lazicki Amy¹^ORCID,Mcnaney James¹^ORCID,Millot Marius¹^ORCID,Myint Philip C.¹^ORCID,Newman Matthew G.⁶,Rygg James R.⁴^ORCID,Sterbentz Dane M.¹^ORCID,Stewart Sarah T.⁷^ORCID,Stixrude Lars⁸^ORCID,Swift Damian C.¹^ORCID,Wehrenberg Chris¹^ORCID,Eggert Jon H.¹^ORCID

Affiliation:

1. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.

2. Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA.

3. Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA.

4. Department of Mechanical Engineering, Department of Physics and Astronomy, and Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14627, USA.

5. Sandia National Laboratories, Albuquerque, NM 87123, USA.

6. Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.

7. Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA.

8. Department of Earth, Planetary, and Space Sciences, University of California Los Angeles, Los Angeles, CA 90095, USA.

Abstract

Terapascal iron-melting temperature The pressure and temperature conditions at which iron melts are important for terrestrial planets because they determine the size of the liquid metal core, an important factor for understanding the potential for generating a radiation-shielding magnetic field. Kraus et al . used laser-driven shock to determine the iron-melt curve up to a pressure of 1000 gigapascals (see the Perspective by Zhang and Lin). This value is about three times that of the Earth’s inner core boundary. The authors found that the liquid metal core lasted the longest for Earth-like planets four to six times larger in mass than the Earth. —BG

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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