Laser heating in the diamond anvil press up to 2000°C sustained and 3000°C pulsed at pressures up to 260 kilobars

• Li-chung Ming

  Department of Geological Sciences, University of Rochester, Rochester, New York 14627

• William A. Bassett

  Department of Geological Sciences, University of Rochester, Rochester, New York 14627

抄録

Samples held at pressures up to 260 kilobar in a diamond anvil pressure cell have been heated to very high temperatures by means of a laser beam introduced through one of the transparent diamond anvils. A 7 J pulsed ruby laser is able to produce temperatures as high as 3000°C in a high pressure sample. A 60 W cw YAG laser is able to produce sustained temperatures up to 2000°C. An optical pyrometer has been used in the latter case to measure the brightness temperature with an accuracy of ±50°C. The ruby laser has been successful in directly converting graphite to diamond; the YAG laser has made it possible to show that (Fe,Mg)2SiO4 disproportionates to (Fe,Mg)O plus SiO2 (stishovite) at pressures in excess of 200 kilobars and temperatures above 1000°C.

収録刊行物

• Review of Scientific Instruments

  Review of Scientific Instruments 45 (9), 1115-1118, 1974-09-01

  AIP Publishing

キーワード

• Instrumentation

詳細情報

• CRID: 1362262943562958336
• NII論文ID: 30015963860
• DOI: 10.1063/1.1686822
• ISSN: 10897623
• ISSN: 00346748
• Web Site: https://pubs.aip.org/aip/rsi/article-pdf/45/9/1115/19305765/1115_1_online.pdf
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