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Opacity effects in a solid-density aluminium plasma created by photo-excitation with an X-ray laser

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Title
Opacity effects in a solid-density aluminium plasma created by photo-excitation with an X-ray laser
Author(s)
D.S. Rackstraw; S.M. Vinko; O. Ciricosta; Byeoung Ick Cho; K. Engelhorn; H.-K. Chung; C.R.D. Brown; T. Burian; J. Chalupský; R.W. Falcone; C. Graves; V. Hájková; A. Higginbotham; L. Juha; J. Krzywinski; H.J. Lee; M. Messerschmidt; C. Murphy; Y. Ping; A. Scherz; W. Schlotter; S. Toleikis; J.J. Turner; L. Vysin; T. Wang; B.Wu; U. Zastrau; D. Zhu; B. Nagler; R.W. Lee; P.A. Heimann; J.S. Wark
Subject
Opacity X-ray laser
Publication Date
2014-06
Journal
HIGH ENERGY DENSITY PHYSICS, v.11, no.1, pp.59 - 69
Publisher
ELSEVIER SCIENCE BV
Abstract
The intensities within the focal spots of the output of recently developed X-ray sources based on freeelectron- laser (FEL) technology are so great that atoms within the focal region can potentially absorb several photons during the few tens of femtosecond X-ray pulse. Furthermore, the duration of the FEL Xray pulse is comparable to the Auger decay times of inner-shell holes created by the X-rays themselves. We report here how such a scenario can lead to opacity broadening of the fluorescence radiation emitted by the hot, dense plasma, which is created as a result of the X-radiation focussed onto a solid target, and in particular present calculations of the broadening of the Ka emission in a solid-density aluminium target, produced when the FEL photon energy is tuned below the Al K-edge, but is resonant with the Ka transition. 2014 Elsevier B.V. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/1010
DOI
10.1016/j.hedp.2014.02.003
ISSN
1574-1818
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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