Metallic water: Transient state under ultrafast electronic excitation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F23%3A00583130" target="_blank" >RIV/61389021:_____/23:00583130 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/23:00570876
Result on the web
<a href="https://pubs.aip.org/aip/jcp/article/158/7/074501/2877031/Metallic-water-Transient-state-under-ultrafast" target="_blank" >https://pubs.aip.org/aip/jcp/article/158/7/074501/2877031/Metallic-water-Transient-state-under-ultrafast</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0139802" target="_blank" >10.1063/5.0139802</a>

Result language
angličtina
Original language name
Metallic water: Transient state under ultrafast electronic excitation
Original language description
The modern means of controlled irradiation by femtosecond lasers or swift heavy ion beams can transiently produce such energy densities in samples that reach collective electronic excitation levels of the warm dense matter state, where the potential energy of interaction of the particles is comparable to their kinetic energies (temperatures of a few eV). Such massive electronic excitation severely alters the interatomic potentials, producing unusual nonequilibrium states of matter and different chemistry. We employ density functional theory and tight binding molecular dynamics formalisms to study the response of bulk water to ultrafast excitation of its electrons. After a certain threshold electronic temperature, the water becomes electronically conducting via the collapse of its bandgap. At high doses, it is accompanied by nonthermal acceleration of ions to a temperature of a few thousand Kelvins within sub-100 fs timescales. We identify the interplay of this nonthermal mechanism with the electron-ion coupling, enhancing the electron-to-ions energy transfer. Various chemically active fragments are formed from the disintegrating water molecules, depending on the deposited dose.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/LM2018114" target="_blank" >LM2018114: Prague Asterix Laser System</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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