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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F12%3A00382680%21RIV13-GA0-68378271
rdf:type
n13:Vysledek skos:Concept
dcterms: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. 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.
dcterms:title
Amorphous to crystalline phase transition in carbon induced by intense femtosecond x-ray free-electron laser pulses Amorphous to crystalline phase transition in carbon induced by intense femtosecond x-ray free-electron laser pulses
skos:prefLabel
Amorphous to crystalline phase transition in carbon induced by intense femtosecond x-ray free-electron laser pulses Amorphous to crystalline phase transition in carbon induced by intense femtosecond x-ray free-electron laser pulses
skos:notation
RIV/68378271:_____/12:00382680!RIV13-GA0-68378271
n13:predkladatel
n14:ico%3A68378271
n3:aktivita
n6:P n6:Z
n3:aktivity
P(EE.2.3.20.0087), P(GAP108/11/1312), P(GAP205/11/0571), P(GAP208/10/2302), P(IAAX00100903), Z(AV0Z10100523)
n3:cisloPeriodika
2
n3:dodaniDat
n7:2013
n3:domaciTvurceVysledku
n12:8434050 n12:5662281 n12:8325200 n12:6173047 n12:2712679 n12:3274713 n12:9517421
n3:druhVysledku
n9:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
121841
n3:idVysledku
RIV/68378271:_____/12:00382680
n3:jazykVysledku
n15:eng
n3:klicovaSlova
amorphous carbon; phase transition; graphitization; x-ray laser; free-electron laser
n3:klicoveSlovo
n5:free-electron%20laser n5:phase%20transition n5:graphitization n5:x-ray%20laser n5:amorphous%20carbon
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[AB3E9FAF99E5]
n3:nazevZdroje
Physical Review. B
n3:obor
n17:BH
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
26
n3:projekt
n8:GAP205%2F11%2F0571 n8:EE.2.3.20.0087 n8:GAP108%2F11%2F1312 n8:IAAX00100903 n8:GAP208%2F10%2F2302
n3:rokUplatneniVysledku
n7:2012
n3:svazekPeriodika
86
n3:tvurceVysledku
Schorb, S. London, R. A. Gaudin, J. Amati, M. Hoffmann, G. Sinn, H. Graf, A. Vu, H. Toufarová, Martina Gregoratti, L. Hau-Riege, S. P. Juha, Libor Sobierajski, R. Moeller, S. Hájková, Věra Vorlíček, Vladimír Störmer, M. Burian, Tomáš Tschentscher, T. Dastjani-Farahani, S. Boček, J. Bostedt, C. Chalupský, Jaromír Peyrusse, O. Krzywinski, J. Vyšín, Luděk
n3:wos
000306309300001
n3:zamer
n20:AV0Z10100523
s:issn
1098-0121
s:numberOfPages
7
n10:doi
10.1103/PhysRevB.86.024103