Tracing X-ray-induced formation of warm dense gold with Boltzmann kinetic equations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00546984" target="_blank" >RIV/61389021:_____/21:00546984 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/21:00545288

Result on the web

<a href="https://link.springer.com/article/10.1140%2Fepjd%2Fs10053-021-00235-z" target="_blank" >https://link.springer.com/article/10.1140%2Fepjd%2Fs10053-021-00235-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjd/s10053-021-00235-z" target="_blank" >10.1140/epjd/s10053-021-00235-z</a>

Result language

angličtina

Original language name

Tracing X-ray-induced formation of warm dense gold with Boltzmann kinetic equations

Original language description

Abstract: In this paper, we report on the Boltzmann kinetic equation approach adapted for simulations of warm dense matter created by irradiation of bulk gold with intense ultrashort X-ray pulses. X-rays can excite inner-shell electrons, which triggers creation of deep-lying core holes. Their relaxation, especially in heavier elements such as gold (atomic number Z= 79) takes complicated pathways, involving collisional processes, and leading through a large number of active configurations. This number can be so high that solving a set of evolution equations for each configuration becomes computationally inefficient, and another modeling approach should be used instead. Here, we use the earlier introduced ’predominant excitation and relaxation path’ approach. It still uses true atomic configurations but limits their number by restricting material relaxation to a selected set of predominant pathways for material excitation and relaxation. With that, we obtain time-resolved predictions for excitation and relaxation in X-ray irradiated bulk of gold, including the respective change of gold optical properties. We compare the predictions with the available data from high-energy-density experiments. Their good agreement indicates ability of the Boltzmann kinetic equation approach to describe warm dense matter created from high-Z materials after their irradiation with X rays, which can be validated in future experiments. Graphic Abstract: [Figure not available: see fulltext.]

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

European Physical Journal D

ISSN

1434-6060

e-ISSN

1434-6079

Volume of the periodical

75

Issue of the periodical within the volume

8

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

224

UT code for WoS article

000686660000001

EID of the result in the Scopus database

2-s2.0-85112527460