scholarly journals Laser heating system at the Extreme Conditions Beamline, P02.2, PETRA III

2021 ◽  
Vol 28 (6) ◽  
Author(s):  
Zuzana Konôpková ◽  
Wolfgang Morgenroth ◽  
Rachel Husband ◽  
Nico Giordano ◽  
Anna Pakhomova ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Laser Heating ◽  
Melting Curve ◽  
Heating System ◽  
Laser Source ◽  
Extreme Conditions ◽  
Diamond Anvil Cells ◽  
X Ray ◽  
Diamond Anvil ◽  
Pulsed Laser Heating

A laser heating system for samples confined in diamond anvil cells paired with in situ X-ray diffraction measurements at the Extreme Conditions Beamline of PETRA III is presented. The system features two independent laser configurations (on-axis and off-axis of the X-ray path) allowing for a broad range of experiments using different designs of diamond anvil cells. The power of the continuous laser source can be modulated for use in various pulsed laser heating or flash heating applications. An example of such an application is illustrated here on the melting curve of iron at megabar pressures. The optical path of the spectroradiometry measurements is simulated with ray-tracing methods in order to assess the level of present aberrations in the system and the results are compared with other systems, that are using simpler lens optics. Based on the ray-tracing the choice of the first achromatic lens and other aspects for accurate temperature measurements are evaluated.

scholarly journals A portable on-axis laser-heating system for near-90° X-ray spectroscopy: application to ferropericlase and iron silicide

2020 ◽  
Vol 27 (2) ◽  
pp. 414-424 ◽  
Author(s):  
Georg Spiekermann ◽  
Ilya Kupenko ◽  
Sylvain Petitgirard ◽  
Manuel Harder ◽  
Alexander Nyrow ◽  
...  
Keyword(s):  
Laser Heating ◽  
Iron Silicide ◽  
Heating System ◽  
Laser Source ◽  
Nuclear Inelastic Scattering ◽  
X Rays ◽  
X Ray ◽  
Signal Collection ◽  
Diamond Anvil ◽  
Laser Heated

A portable IR fiber laser-heating system, optimized for X-ray emission spectroscopy (XES) and nuclear inelastic scattering (NIS) spectroscopy with signal collection through the radial opening of diamond anvil cells near 90°with respect to the incident X-ray beam, is presented. The system offers double-sided on-axis heating by a single laser source and zero attenuation of incoming X-rays other than by the high-pressure environment. A description of the system, which has been tested for pressures above 100 GPa and temperatures up to 3000 K, is given. The XES spectra of laser-heated Mg0.67Fe0.33O demonstrate the potential to map the iron spin state in the pressure–temperature range of the Earth's lower mantle, and the NIS spectra of laser-heated FeSi give access to the sound velocity of this candidate of a phase inside the Earth's core. This portable system represents one of the few bridges across the gap between laser heating and high-resolution X-ray spectroscopies with signal collection near 90°.

scholarly journals Laser-heating system for high-pressure X-ray diffraction at the Extreme Conditions beamline I15 at Diamond Light Source

2018 ◽  
Vol 25 (6) ◽  
pp. 1860-1868 ◽  
Author(s):  
Simone Anzellini ◽  
Annette K. Kleppe ◽  
Dominik Daisenberger ◽  
Michael T. Wharmby ◽  
Ruggero Giampaoli ◽  
...  
Keyword(s):  
Light Source ◽  
Laser Heating ◽  
Theoretical Data ◽  
Heating System ◽  
Ex Situ ◽  
X Ray Diffraction ◽  
X Ray ◽  
Wide Range ◽  
Diamond Anvil

In this article, the specification and application of the new double-sided YAG laser-heating system built on beamline I15 at Diamond Light Source are presented. This system, combined with diamond anvil cell and X-ray diffraction techniques, allows in situ and ex situ characterization of material properties at extremes of pressure and temperature. In order to demonstrate the reliability and stability of this experimental setup over a wide range of pressure and temperature, a case study was performed and the phase diagram of lead was investigated up to 80 GPa and 3300 K. The obtained results agree with previously published experimental and theoretical data, underlining the quality and reliability of the installed setup.

Portable laser-heating system for diamond anvil cells

2009 ◽  
Vol 16 (6) ◽  
pp. 737-741 ◽  
Author(s):  
L. Dubrovinsky ◽  
K. Glazyrin ◽  
C. McCammon ◽  
O. Narygina ◽  
E. Greenberg ◽  
...  
Keyword(s):  
Laser Heating ◽  
Heating System ◽  
Diamond Anvil Cells ◽  
Diamond Anvil

In situ synchrotron X-ray diffraction with laser-heated diamond anvil cells study of Pt up to 95 GPa and 3150 K

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14603-14609 ◽  
Author(s):  
Xiaoli Huang ◽  
Fangfei Li ◽  
Qiang Zhou ◽  
Gang Wu ◽  
Yanping Huang ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
Diamond Anvil Cells ◽  
X Ray ◽  
Diamond Anvil ◽  
Laser Heated

In situ synchrotron X-ray diffraction with laser-heated diamond anvil cells study the EOS of Pt.

scholarly journals Comparison between beryllium and diamond-backing plates in diamond-anvil cells: Application to single-crystal x-ray diffraction high-pressure data

2011 ◽  
Vol 82 (5) ◽  
pp. 055111 ◽  
Author(s):  
Benedetta Periotto ◽  
Fabrizio Nestola ◽  
Tonci Balic-Zunic ◽  
Ross J. Angel ◽  
Ronald Miletich ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystal ◽  
Pressure Data ◽  
X Ray Diffraction ◽  
Diamond Anvil Cells ◽  
X Ray ◽  
Diamond Anvil

scholarly journals Melting of iron determined by X-ray absorption spectroscopy to 100 GPa

2015 ◽  
Vol 112 (39) ◽  
pp. 12042-12045 ◽  
Author(s):  
Giuliana Aquilanti ◽  
Angela Trapananti ◽  
Amol Karandikar ◽  
Innokenty Kantor ◽  
Carlo Marini ◽  
...  
Keyword(s):  
Melting Temperature ◽  
Absorption Spectroscopy ◽  
Inner Core ◽  
Solid Phase ◽  
Melting Curve ◽  
X Ray ◽  
Core Boundary ◽  
Diamond Anvil ◽  
Laser Heated ◽  
X Ray Absorption

Temperature, thermal history, and dynamics of Earth rely critically on the knowledge of the melting temperature of iron at the pressure conditions of the inner core boundary (ICB) where the geotherm crosses the melting curve. The literature on this subject is overwhelming, and no consensus has been reached, with a very large disagreement of the order of 2,000 K for the ICB temperature. Here we report new data on the melting temperature of iron in a laser-heated diamond anvil cell to 103 GPa obtained by X-ray absorption spectroscopy, a technique rarely used at such conditions. The modifications of the onset of the absorption spectra are used as a reliable melting criterion regardless of the solid phase from which the solid to liquid transition takes place. Our results show a melting temperature of iron in agreement with most previous studies up to 100 GPa, namely of 3,090 K at 103 GPa.

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