Time-resolved XUV opacity measurements of warm dense aluminum

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00533553" target="_blank" >RIV/68378271:_____/20:00533553 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/20:10417443

Result on the web

<a href="https://doi.org/10.1103/PhysRevLett.124.225002" target="_blank" >https://doi.org/10.1103/PhysRevLett.124.225002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.124.225002" target="_blank" >10.1103/PhysRevLett.124.225002</a>

Result language

angličtina

Original language name

Time-resolved XUV opacity measurements of warm dense aluminum

Original language description

The free-free opacity in plasmas is fundamental to our understanding of energy transport in stellar interiors and for inertial confinement fusion research. However, theoretical predictions in the challenging dense plasma regime are conflicting and there is a dearth of accurate experimental data to allow for direct model validation. Herewe present time-resolved transmission measurements in solid-density Al heated by an XUV free-electron laser. We use a novel functional optimization approach to extract the temperaturedependent absorption coefficient directly from an oversampled pool of single-shot measurements, and find a pronounced enhancement of the opacity as the plasma is heated to temperatures of order of the Fermi energy. Plasma heating and opacity enhancement are observed on ultrafast timescales, within the duration of the femtosecond XUV pulse. We attribute further rises in the opacity on ps timescales to melt and the formation of warm dense matter.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

—

Volume of the periodical

124

Issue of the periodical within the volume

22

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

1-6

UT code for WoS article

000537620500007

EID of the result in the Scopus database

2-s2.0-85086863347