A2 Refereed review article in a scientific journal
Ultrafast Structural Dynamics of Nanoparticles in Intense Laser Fields
Authors: Nishiyama T, Kumagai Y, Niozu A, Fukuzawa H, Motomura K, Bucher M, Ito Y, Takanashi T, Asa K, Sato Y, You D, Li YW, Ono T, Kukk E, Miron C, Neagu L, Callegari C, Di Fraia M, Rossi G, Galli DE, Pincelli T, Colombo A, Kameshima T, Joti Y, Hatsui T, Owada S, Katayama T, Togashi T, Tono K, Yabashi M, Matsuda K, Bostedt C, Nagaya K, Ueda K, Ueda K
Publisher: AMER PHYSICAL SOC
Publishing place: COLLEGE PK, MD
Publication year: 2019
Journal: Physical Review Letters
Journal name in source: PHYSICAL REVIEW LETTERS
Journal acronym: PHYS REV LETT
Article number: ARTN 123201
Volume: 123
Issue: 12
Number of pages: 6
ISSN: 0031-9007
eISSN: 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.123.123201
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.
