Time differentiated nuclear resonance spectroscopy coupled with pulsed laser heating in diamond anvil cells

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.

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Melting curve determination under high pressure using pulsed laser heating in a diamond anvil cell: Application to cerium

High Pressure Research ◽

10.1080/08957959408206144 ◽

1994 ◽

Vol 12 (3) ◽

pp. 175-186 ◽

Cited By ~ 11

Author(s):

B. Sitaud ◽

J. Péré ◽

Th. Thévenin

Keyword(s):

High Pressure ◽

Laser Heating ◽

Diamond Anvil Cell ◽

Melting Curve ◽

Pulsed Laser ◽

Diamond Anvil ◽

Curve Determination ◽

Pulsed Laser Heating

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Pulsed laser heating and temperature determination in a diamond anvil cell

Review of Scientific Instruments ◽

10.1063/1.2140493 ◽

2005 ◽

Vol 76 (12) ◽

pp. 125104 ◽

Cited By ~ 24

Author(s):

S. Deemyad ◽

E. Sterer ◽

C. Barthel ◽

S. Rekhi ◽

J. Tempere ◽

...

Keyword(s):

Laser Heating ◽

Diamond Anvil Cell ◽

Pulsed Laser ◽

Temperature Determination ◽

Diamond Anvil ◽

Pulsed Laser Heating

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Pulsed laser heating of soot: morphological changes

Carbon ◽

10.1016/s0008-6223(98)00169-9 ◽

1999 ◽

Vol 37 (2) ◽

pp. 231-239 ◽

Cited By ~ 80

Author(s):

Randy L Vander Wal ◽

Mun Y Choi

Keyword(s):

Laser Heating ◽

Morphological Changes ◽

Pulsed Laser ◽

Pulsed Laser Heating

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Thermal Modeling of the Cavity in Pulsed Excimer Laser Calorimeters

10.1115/imece2000-1574 ◽

2000 ◽

Author(s):

D. H. Chen ◽

Z. M. Zhang

Keyword(s):

Laser Heating ◽

Average Power ◽

Pulsed Laser ◽

Thermal Response ◽

Element Model ◽

Electrical Heating ◽

Deep Ultraviolet ◽

Simplified Finite Element Model ◽

193 Nm ◽

Pulsed Laser Heating

Abstract A simplified finite element model is built to study the thermal response of the 193-nm pulsed-laser calorimeter. The nonequivalence between pulsed-laser heating and electrical heating is estimated to be 0.46% at the thermocouple locations by comparing the calibration factors for average-power laser heating and electrical heating. This study should help the development of calibration and measurement standards in pulsed energy measurements for deep ultraviolet excimer lasers that are important for photolithographic and materials processing applications.

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