Amorphous to crystalline phase transition in carbon induced by intense femtosecond x-ray free-electron laser pulses
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00382680" target="_blank" >RIV/68378271:_____/12:00382680 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.86.024103" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.86.024103</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.86.024103" target="_blank" >10.1103/PhysRevB.86.024103</a>
Alternative languages
Result language
angličtina
Original language name
Amorphous to crystalline phase transition in carbon induced by intense femtosecond x-ray free-electron laser pulses
Original language description
We present the results of an experiment where amorphous carbon undergoes a phase transition induced by femtosecond 830 eV x-ray free-electron laser pulses. The phase transition threshold fluence is found to be 282 11 mJ/cm2. Atomic force microscopy, photoelectron microscopy, and micro-Raman spectroscopy give experimental evidence for the phase transition in terms of a volume expansion, graphitization, and change of local order of the irradiated sample area. The interaction is modeled by an accurate time-dependent treatment of the ionization dynamics coupled to a two-temperature model. At the phase transition fluence threshold the free-electron density Ne is found to be at maximum 9 1020 cm-3 while the ion (atom) temperature is found to be 1050 K, e.g.,above the crystallization activation temperature reported in the literature. This low ionization rate and high atom temperature suggest a thermally activated phase transition.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Result continuities
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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
86
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"024103-1"-"024103-7"
UT code for WoS article
000306309300001
EID of the result in the Scopus database
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