Implementation of a Wollaston interferometry diagnostic on OMEGA EP
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Laboratory for Laser Energetics, University of Rochester
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Here, a Wollaston interferometer is presented for use in measuring the electron density of plasma plumes created in experiments on the OMEGA EP laser system. The diagnostic is installed as an additional arm on the 4ω probe system, a suite of diagnostics that share a 10 ps pulse of 263 nm laser light captured by an imaging system at f/4. The interferometer utilizes a Wollaston prism to create two angularly separated beams from a single input probe beam, split at any angle between 0° and 90°. This configuration is implemented uniquely such that fringe spacing may be altered independently of field of view, magnification, and imaging resolution, from a range of 17 to 76 μm/fringe. The region of overlap between the two beams forms a total field of view of approximately 1.2 × 1.6 mm at the target chamber center with an imaging resolution of 5 μm. Using this configuration, here it is shown that plasma density may be accurately characterized over a range of 3 × 1018–1 × 1020 cm-3.
- Research Organization:
- Univ. of Rochester, NY (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- NA0001944
- OSTI ID:
- 1468612
- Alternate ID(s):
- OSTI ID: 1462590
- Report Number(s):
- 2017--263, 2389; 2017-263, 1431, 2389
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 89; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Plasma Density Measurements of the Inner Shell Release
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journal | December 2019 |
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