Volume 77, Number 2, January 2007
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||10 January 2007|
Hollow ion emission driven by pulsed intense X-ray fields
Université de Provence et CNRS, UMR 6633, Centre de St-Jérôme, PIIM - F-13397 Marseille Cedex 20, France
2 L-399, Lawrence Livermore National Laboratory, University of California - P.O. Box 808, Livermore, CA 94551, USA
Accepted: 16 November 2006
Transient hollow ion atomic radiation field kinetics is developed which shows that short pulse intense narrow-band X-ray sources enable the rise of hollow ion population densities in dense plasmas more than 10 orders of magnitude higher than without pump. The subsequent hollow ion X-ray emission, which will escape even extremely high-density plasmas without detrimental absorption, will open up a new field of research and allow novel studies of atomic systems in intense Coulomb fields. Simulations including relaxation effects show that for parameters of currently established free-electron X-ray lasers atomic chain reactions can be initiated which drive efficient hollow ion X-ray emission.
PACS: 41.60.Cr – Free-electron lasers / 52.38.Ph – X-ray, γ-ray and particle generation / 32.80.Fb – Photoionization of atoms and ions
© Europhysics Letters Association, 2007
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