CO<sub>2</sub> laser heating system for <i>in situ</i> radial x-ray absorption at 16-BM-D at the Advanced Photon Source-Reference-Cited by-同舟云学术

CO₂ laser heating system for in situ radial x-ray absorption at 16-BM-D at the Advanced Photon Source

Published:2022-08-01 Issue:8 Volume:93 Page:083901
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:Review of Scientific Instruments

Author:

Childs Christian¹²^ORCID,Smith Dean³⁴^ORCID,Smith G. Alexander³⁵^ORCID,Ellison Paul¹^ORCID,Sneed Daniel¹⁶^ORCID,Hinton Jasmine¹³^ORCID,Siska Emily³⁵^ORCID,Pigott Jeffrey S.⁷^ORCID,Rod Eric⁴,O’Donnell William¹,Salem Ran⁸,Sturtevant Blake⁷^ORCID,Scharff R. Jason⁹^ORCID,Velisavljevic Nenad⁴⁶^ORCID,Park Changyong⁴^ORCID,Salamat Ashkan¹³^ORCID

Affiliation:

1. Department of Physics and Astronomy, University of Nevada Las Vegas, Las Vegas, Nevada 89154, USA

2. Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA

3. Nevada Extreme Conditions Laboratory, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA

4. HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA

5. Department of Chemistry and Biochemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, USA

6. Physics Division-Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA

7. Shock and Detonation Physics (M-9), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

8. Physics Department, Nuclear Research Center Negev, P.O. Box 9001, Beer-Sheva 84190, Israel

9. Mission Support and Test Services, LLC, North Las Vegas, Nevada 89030, USA

Abstract

We present a portable CO2 laser heating system for in situ x-ray absorption spectroscopy (XAS) studies at 16-BM-D (High Pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory). Back scattering optical measurements are made possible by the implementation of a Ge beamsplitter. Optical pyrometry is conducted in the near-infrared, and our temperature measurements are free of chromatic aberration due to the implementation of the peak-scaling method [A. Kavner and W. R. Panero, Phys. Earth Planet. Inter. 143–144, 527–539 (2004) and A. Kavner and C. Nugent, Rev. Sci. Instrum. 79, 024902 (2008)] and mode scrambling of the input signal. Laser power stabilization is established using electronic feedback, providing a steady power over second timescales [Childs et al., Rev. Sci. Instrum. 91, 103003 (2020)]—crucial for longer XAS collections. Examples of in situ high pressure–temperature extended x-ray absorption fine structure measurements of ZrO2 are presented to demonstrate this new capability.

Funder

U.S. Department of Energy

Publisher

AIP Publishing

Subject

Instrumentation

Link

https://aip.scitation.org/doi/am-pdf/10.1063/5.0086642

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