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Goncharov AF, Prakapenka VB, Struzhkin VV, et al. X-ray diffraction in the pulsed laser heated diamond anvil cell. Rev Sci Instrum. 2010;81(11):113902doi: 10.1063/1.3499358.
Goncharov, A. F., Prakapenka, V. B., Struzhkin, V. V., Kantor, I., Rivers, M. L., & Dalton, D. A. (2010). X-ray diffraction in the pulsed laser heated diamond anvil cell. The Review of scientific instruments, 81(11), 113902. https://doi.org/10.1063/1.3499358
Goncharov, Alexander F, et al. "X-ray diffraction in the pulsed laser heated diamond anvil cell." The Review of scientific instruments vol. 81,11 (2010): 113902. doi: https://doi.org/10.1063/1.3499358
Goncharov AF, Prakapenka VB, Struzhkin VV, Kantor I, Rivers ML, Dalton DA. X-ray diffraction in the pulsed laser heated diamond anvil cell. Rev Sci Instrum. 2010 Nov;81(11):113902. doi: 10.1063/1.3499358. PMID: 21133481.
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Rev Sci Instrum. 2010 Nov;81(11):113902. doi: 10.1063/1.3499358.

X-ray diffraction in the pulsed laser heated diamond anvil cell.

The Review of scientific instruments

Alexander F Goncharov, Vitali B Prakapenka, Viktor V Struzhkin, Innokenty Kantor, Mark L Rivers, D Allen Dalton

Affiliations

  1. Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd., NW, Washington, DC 20015, USA.

PMID: 21133481 DOI: 10.1063/1.3499358

Abstract

We have developed in situ x-ray synchrotron diffraction measurements of samples heated by a pulsed laser in the diamond anvil cell at pressure up to 60 GPa. We used an electronically modulated 2-10 kHz repetition rate, 1064-1075 nm fiber laser with 1-100 μs pulse width synchronized with a gated x-ray detector (Pilatus) and time-resolved radiometric temperature measurements. This enables the time domain measurements as a function of temperature in a microsecond time scale (averaged over many events, typically more than 10,000). X-ray diffraction data, temperature measurements, and finite element calculations with realistic geometric and thermochemical parameters show that in the present experimental configuration, samples 4 μm thick can be continuously temperature monitored (up to 3000 K in our experiments) with the same level of axial and radial temperature uniformities as with continuous heating. We find that this novel technique offers a new and convenient way of fine tuning the maximum sample temperature by changing the pulse width of the laser. This delicate control, which may also prevent chemical reactivity and diffusion, enables accurate measurement of melting curves, phase changes, and thermal equations of state.

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