Počet záznamů: 1
Tracing X-ray-induced formation of warm dense gold with Boltzmann kinetic equations
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SYSNO ASEP 0546984 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Tracing X-ray-induced formation of warm dense gold with Boltzmann kinetic equations Tvůrce(i) Ziaja, B. (DE)
Bekx, J.J. (DE)
Mašek, M. (CZ)
Medvedev, Nikita (UFP-V) ORCID
Piekarz, P. (PL)
Saxena, V. (DE)
Stránský, M. (CZ)
Toleikis, S. (DE)Celkový počet autorů 8 Číslo článku 224 Zdroj.dok. European Physical Journal D. - : Springer - ISSN 1434-6060
Roč. 75, č. 8 (2021)Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova X-ray ; warm dense gold ; Boltzmann kinetic equations Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP LTT17015 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001552 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LM2015083 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UFP-V - RVO:61389021 UT WOS 000686660000001 EID SCOPUS 85112527460 DOI 10.1140/epjd/s10053-021-00235-z Anotace 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.] Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2022 Elektronická adresa https://link.springer.com/article/10.1140%2Fepjd%2Fs10053-021-00235-z
Počet záznamů: 1