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Streaked optical pyrometer system for laser-driven shock-wave experiments on OMEGA.

J E Miller¹, T R Boehly, A Melchior

¹Laboratory of Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623, USA.

The Review of Scientific Instruments

|April 7, 2007

Summary

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Researchers developed a new pyrometer to measure laser-driven shock wave temperatures. This advancement aids inertial confinement fusion and high-energy-density physics research.

Area of Science:

Physics
Plasma Physics
Laser Physics

Background:

Laser-driven shock waves are crucial for understanding inertial confinement fusion (ICF) and high-energy-density (HED) physics.
Accurate temperature measurements of these shocks are essential for validating theoretical models and experimental designs.

Purpose of the Study:

To develop and validate a novel diagnostic technique for measuring the temperature of laser-driven shock waves.
To integrate this technique with existing diagnostics for comprehensive shock wave characterization.

Main Methods:

A streaked optical pyrometer was developed to measure the self-emission of laser-driven shocks.
This pyrometer was used simultaneously with a Velocity Interferometer System for Any Reflector (VISAR).
The combined diagnostics were employed on the OMEGA laser to study megabar shocks.

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Main Results:

The study successfully obtained temporally and spatially resolved temperature data for megabar shocks.
Key spectral calibration results and recording system characteristics of the pyrometer were presented.
The integration of the pyrometer with VISAR provided a more complete picture of shock wave dynamics.

Conclusions:

The developed streaked optical pyrometer is a valuable tool for temperature measurements in laser-driven shock experiments.
This diagnostic capability enhances the study of ICF and HED physics.
The combined pyrometer-VISAR system offers a robust method for shock wave characterization.