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TOF-OFF: A method for determining focal positions in tightly focused free-electron laser experiments by measurement of ejected ions

Abstract:

Pulse intensities greater than 1017 Watt/cm2 were reached at the FLASH soft X-ray laser in Hamburg, Germany, using an off-axis parabolic mirror to focus 15 fs pulses of 5-70 μJ energy at 13.5 nm wavelength to a micron-sized spot. We describe the interaction of such pulses with niobium and vanadium targets and their deuterides. The beam produced craters in the solid targets, and we measured the kinetic energy of ions ejected from these craters. Ions with several keV kinetic energy were observe...

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Publication status:
Published

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Publisher copy:
10.1016/j.hedp.2011.06.008

Authors


Andreasson, J More by this author
Andrejczuk, A More by this author
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Journal:
HIGH ENERGY DENSITY PHYSICS
Volume:
7
Issue:
4
Pages:
336-342
Publication date:
2011-12-05
DOI:
ISSN:
1574-1818
URN:
uuid:d50b5e98-07e3-4fac-897a-f8ed7faf7e34
Source identifiers:
170363
Local pid:
pubs:170363

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