Femtosecond laser pulses have opened new frontiers for the study of ultrafast phase transitions and nonequilibrium states of matter. In this Letter, we report on structural dynamics in atomic clusters pumped with intense near-infrared (NIR) pulses into a nanoplasma state. Employing wide-angle scattering with intense femtosecond x-ray pulses from a free-electron laser source, we find that highly excited xenon nanoparticles retain their crystalline bulk structure and density in the inner core long after the driving NIR pulse. The observed emergence of structural disorder in the nanoplasma is consistent with a propagation from the surface to the inner core of the clusters.
Ultrafast Structural Dynamics of nanoparticles in Intense Laser Fields / T. Nishiyama, Y. Kumagai, A. Niozu, H. Fukuzawa, K. Motomura, M. Bucher, Y. Ito, T. Takanashi, K. Asa, Y. Sato, D. You, Y. Li, T. Ono, E. Kukk, C. Miron, L. Neagu, C. Callegari, M. Di Fraia, G. Rossi, D.E. Galli, T. Pincelli, A. Colombo, T. Kameshima, Y. Joti, T. Hatsui, S. Owada, T. Katayama, T. Togashi, K. Tono, M. Yabashi, K. Matsuda, C. Bostedt, K. Nagaya, K. Ueda. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 123:12(2019 Sep 16).
Titolo: | Ultrafast Structural Dynamics of nanoparticles in Intense Laser Fields | |
Autori: | ||
Parole Chiave: | femptosecond XFEL pulses, cluster dynamics | |
Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica della Materia Settore FIS/01 - Fisica Sperimentale | |
Progetto: | NOXSS (X-ray Single Shots of Nano Objects) un approccio sperimentale e teorico integrato per la caratterizzazione strutturale di nano e micro oggetti (clusters, nanocristalli, biomolecole, virus, liposomi) utilizzando gli impulsi X ultrabrevi ed ultrabrillanti delle sorgenti free electron laser europee | |
Data di pubblicazione: | 16-set-2019 | |
Rivista: | ||
Tipologia: | Article (author) | |
Data ahead of print / Data di stampa: | ago-2019 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.123.123201 | |
Appare nelle tipologie: | 01 - Articolo su periodico |
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