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

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 {micro}s 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 {micro}m 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.

Authors:
; ; ; ; ;  [1]
  1. CIW
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1002884
Resource Type:
Journal Article
Journal Name:
Rev. Sci. Instrum.
Additional Journal Information:
Journal Volume: 81; Journal Issue: (11) ; 2010; Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; CONFIGURATION; DIAMONDS; DIFFRACTION; DIFFUSION; EQUATIONS OF STATE; FIBERS; HEATING; LASERS; MELTING; SYNCHROTRONS; TEMPERATURE MEASUREMENT; TUNING; X-RAY DIFFRACTION

Citation Formats

Goncharov, Alexander F, Prakapenka, Vitali B, Struzhkin, Viktor V, Kantor, Innokenty, Rivers, Mark L, Dalton, D Allen, and UC). X-ray diffraction in the pulsed laser heated diamond anvil cell. United States: N. p., 2010. Web. doi:10.1063/1.3499358.
Goncharov, Alexander F, Prakapenka, Vitali B, Struzhkin, Viktor V, Kantor, Innokenty, Rivers, Mark L, Dalton, D Allen, & UC). X-ray diffraction in the pulsed laser heated diamond anvil cell. United States. https://doi.org/10.1063/1.3499358
Goncharov, Alexander F, Prakapenka, Vitali B, Struzhkin, Viktor V, Kantor, Innokenty, Rivers, Mark L, Dalton, D Allen, and UC). 2010. "X-ray diffraction in the pulsed laser heated diamond anvil cell". United States. https://doi.org/10.1063/1.3499358.
@article{osti_1002884,
title = {X-ray diffraction in the pulsed laser heated diamond anvil cell},
author = {Goncharov, Alexander F and Prakapenka, Vitali B and Struzhkin, Viktor V and Kantor, Innokenty and Rivers, Mark L and Dalton, D Allen and UC)},
abstractNote = {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 {micro}s 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 {micro}m 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.},
doi = {10.1063/1.3499358},
url = {https://www.osti.gov/biblio/1002884}, journal = {Rev. Sci. Instrum.},
issn = {0034-6748},
number = (11) ; 2010,
volume = 81,
place = {United States},
year = {Fri Nov 19 00:00:00 EST 2010},
month = {Fri Nov 19 00:00:00 EST 2010}
}