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Journal Articles Physical Review X Year : 2018

Following the Birth of a Nanoplasma Produced by an Ultrashort Hard-X-Ray Laser in Xenon Clusters

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Yoshiaki Kumagai
  • Function : Author
Hironobu Fukuzawa
Koji Motomura
  • Function : Author
Denys Iablonskyi
  • Function : Author
Kiyonobu Nagaya
  • Function : Author
Yuta Ito
  • Function : Author
Tsukasa Takanashi
  • Function : Author
Yuta Sakakibara
  • Function : Author
Daehyun You
  • Function : Author
Toshiyuki Nishiyama
  • Function : Author
Kazuki Asa
  • Function : Author
Yuhiro Sato
  • Function : Author
Takayuki Umemoto
  • Function : Author
Kango Kariyazono
  • Function : Author
Edwin Kukk
  • Function : Author
Kuno Kooser
  • Function : Author
Christophe Nicolas
  • Function : Author
  • PersonId : 759783
  • IdRef : 075098865
Theodor Asavei
  • Function : Author
  • PersonId : 892906
Markus Schöffler
  • Function : Author
Gregor Kastirke
  • Function : Author
Xiao-Jing Liu
  • Function : Author
Tetsuo Katayama
  • Function : Author
Tadashi Togashi
  • Function : Author
Nikolay Golubev
  • Function : Author
Kiyoshi Ueda

Abstract

X-ray free-electron lasers (XFELs) made available a new regime of x-ray intensities, revolutionizing the ultrafast structure determination and laying the foundations of the novel field of nonlinear x-ray optics. Although earlier studies revealed nanoplasma formation when an XFEL pulse interacts with any nanometer-scale matter, the formation process itself has never been decrypted and its timescale was unknown. Here we show that time-resolved ion yield measurements combined with a near-infrared laser probe reveal a surprisingly ultrafast population (∼12 fs), followed by a slower depopulation (∼250 fs) of highly excited states of atomic fragments generated in the process of XFEL-induced nanoplasma formation. Inelastic scattering of Auger electrons and interatomic Coulombic decay are suggested as the mechanisms populating and depopulating, respectively, these excited states. The observed response occurs within the typical x-ray pulse durations and affects x-ray scattering, thus providing key information on the foundations of x-ray imaging with XFELs.

Dates and versions

cea-01881632 , version 1 (26-09-2018)

Identifiers

Cite

Yoshiaki Kumagai, Hironobu Fukuzawa, Koji Motomura, Denys Iablonskyi, Kiyonobu Nagaya, et al.. Following the Birth of a Nanoplasma Produced by an Ultrashort Hard-X-Ray Laser in Xenon Clusters. Physical Review X, 2018, 8 (3), ⟨10.1103/PhysRevX.8.031034⟩. ⟨cea-01881632⟩
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