Research output: Contribution to journal › Article › peer-review
Journal | HIGH ENERGY DENSITY PHYSICS |
---|---|
Date | Accepted/In press - 24 Jan 2020 |
Date | E-pub ahead of print - 27 Jan 2020 |
Date | Published (current) - Mar 2021 |
Volume | 38 |
Early online date | 27/01/20 |
Original language | English |
The interaction of high-power short lasers with solid density targets is an important application of modern solid state lasers. However, uncertainties in measurements due to lack of information on the laser pedestal-to-peak contrast limits the validity of many conclusions. We show that X-ray spectral measurements can provide a straightforward way for accessing the laser pedestal-to-peak contrast. The experiments use silicon targets and relativistic laser intensities of 3 × 1020 W/cm2 with a pulse duration of 1 ps. By not using or using a plasma mirror we compare low and high contrast measurements of the Ly-α line and its satellites to show that these lines are an effective laser contrast diagnostic. This diagnostic has potential to reduce uncertainty in future laser-solid interaction studies.
© 2021 Published by Elsevier B.V. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.
Funding Information:
The study was done under financial support of Russian Foundation for Basic Research (grant# 20-02-00790) and in the frame of the State Assignment to JIHT RAS (topic #075-00892-20-00). The work of UK team received financial support from UK EPSRC grants EP/L01663X/1 and EP/H012605/1 .
Publisher Copyright:
© 2021
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Project: Research project (funded) › Research
Project: Research project (funded) › Research
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