Application of nano-polycrystalline diamond to laser-heated diamond anvil cell experiments

H. Ohfuji, T. Okada, T. Yagi, H. Sumiya, T. Irifune

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Laser heating in diamond anvil cell (DAC) equipped with nano-polycrystalline diamond (NPD) anvils was tested for the first time using various types of lasers. An NPD-based DAC was found to provide better heating efficiency than a standard DAC with single-crystal anvils, probably due to the order of magnitude lower thermal conductivity of the NPD. We observed high-temperature generation exceeding 5000 and 3500K during laser heating of hcp-Fe sample at pressures of 100 and 170GPa, respectively. The results of the present study demonstrate promising potential of laser-heated nano-polycrystalline DAC for the generation of very high temperature under multi-megabar pressure conditions equivalent to those of the Earth's core.

Original languageEnglish
Pages (from-to)142-150
Number of pages9
JournalHigh Pressure Research
Volume30
Issue number1
DOIs
Publication statusPublished - 2010 Mar
Externally publishedYes

Keywords

  • Diamond anvil cell
  • High pressure
  • High temperature
  • Laser heating
  • Nano-polycrystalline diamond

ASJC Scopus subject areas

  • Condensed Matter Physics

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