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An approach for the measurement of the bulk temperature of single crystal diamond using an X-ray free electron laser

Abstract:
We present a method to determine the bulk temperature of a single crystal diamond sample at an X-Ray free electron laser using inelastic X-ray scattering. The experiment was performed at the high energy density instrument at the European XFEL GmbH, Germany. The technique, based on inelastic X-ray scattering and the principle of detailed balance, was demonstrated to give accurate temperature measurements, within 8% for both room temperature diamond and heated diamond to 500 K. Here, the temperature was increased in a controlled way using a resistive heater to test theoretical predictions of the scaling of the signal with temperature. The method was tested by validating the energy of the phonon modes with previous measurements made at room temperature using inelastic X-ray scattering and neutron scattering techniques. This technique could be used to determine the bulk temperature in transient systems with a temporal resolution of 50 fs and for which accurate measurements of thermodynamic properties are vital to build accurate equation of state and transport models.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s41598-020-71350-x

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Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author


Publisher:
Nature Research
Journal:
Scientific Reports More from this journal
Volume:
10
Article number:
14564
Publication date:
2020-09-03
Acceptance date:
2020-08-06
DOI:
EISSN:
2045-2322


Language:
English
Keywords:
Pubs id:
1126569
Local pid:
pubs:1126569
Deposit date:
2020-08-17

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