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Measurement of the temperature distribution on the surface of the laser heated specimen in a diamond anvil cell system by the tandem imaging acousto-optical filter |
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| Authors: | Pavel V. Zinin Alexey A. Bykov Alexander S. Machikhin Ivan A. Troyan Kamil M. Bulatov Yulya V. Mantrova |
| Affiliation: | 1. Scientific and Technological Center of Unique Instrumentation of the Russian Academy of Sciences, Moscow, Russia;2. Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, HI, USA;3. National Research University ‘Moscow Power Engineering Institute’, Moscow, Russia;4. Institute of Crystallography of the Russian Academy of Sciences, Moscow, Russia |
| Abstract: | We demonstrate that combining the laser heating (LH) system in a diamond anvil cell (DAC) with a tandem acousto-optical tunable filter (TAOTF) allows measurement of the temperature distribution (TD) under infrared (IR, 1064?nm) LH of a specimen under high pressure in a DAC. The main component of the system is a TAOTF synchronized with a video camera. The system allows TD mapping within a temperature range of approximately 1000–2000?K on the surface of a laser-heated object (Fe plates) at high pressure in a DAC with a spatial resolution 2?µm by fitting the actual signal to Planck’s equation at each point. |
| Keywords: | Temperature distribution laser heating diamond anvil cell high pressure imaging acousto-optical filter |