X-ray lasers as probes to measure plasma ablation rates

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F07%3A02133410" target="_blank" >RIV/68407700:21220/07:02133410 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
X-ray lasers as probes to measure plasma ablation rates
Original language description
The rate of laser ablation at irradiances of ~2x1014 Wcm-2 of solid iron and aluminum has been measured using the transmission of a neon-like zinc X-ray laser at 21.2 nm through thin iron and aluminum targets. It is shown that the opacity of ablated material falls rapidly with increasing temperatures and decreasing density from the solid value. As ablated plasma becomes transparent to the X-ray laser flux, the thickness of solid, unablated material and hence the rate of ablation can be measured from time resolved X-ray laser transmission. A self-regulating model of laser ablation and fluid code simulations with absorption to thermal plasma of 5-10% show agreement with our measured ablation rates.
Czech name
X lasery jako sondy pro měření podílu plasmové ablace
Czech description
Byla měřena úroveňm ablace železa a hliníku při ozáření neon-like zinc X-ray laserem o vlnové délce 21.2 nm o hustotě výkonu ~2x1014 Wcm-2. Měření ukázalo, že neprůsvitnost ablovaného materiálu rychle klesá s růstem teploty a roste s rustem hustoty hmoty.

Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of SPIE -- Volume 6702 Soft X-Ray Lasers and Applications VII
ISBN
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ISSN
0277-786X
e-ISSN
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Number of pages
10
Pages from-to
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Publisher name
SPIE Europe
Place of publication
Warsaw
Event location
Praha
Event date
Apr 16, 2007
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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