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Title: Time-resolved ionization measurements with intense ultrashort XUV and X-ray free-electron laser pulses

Abstract

Abstract Modern free-electron lasers (FEL) operating in XUV (extreme ultraviolet) or X-ray range allow an access to novel research areas. One instance is the ultrafast ionization of a solid by an intense femtosecond FEL pulse in XUV which consequently leads to a change of the complex index of refraction on an ultrashort timescale. The photoionization and subsequent impact ionization resulting in electronic and atomic dynamics are modeled with our hybrid code XTANT(X-ray thermal and non-thermal transitions) and a Monte Carlo code XCASCADE(X-ray-induced electron cascades). The simulations predict the temporal kinetics of FEL-induced electron cascades and thus yield temporally and spatially resolved information on the induced changes of the optical properties. In a series of experiments at FERMI and LCLS, single shot measurements with spatio-temporal encoding of the ionization process have been performed by a correlation of the FEL pump pulse with an optical femtosecond probe pulse. An excellent agreement between the experiment and the simulation has been found. Furthermore, we demonstrate that such kind of experiments forms the basis for pulse duration and arrival time jitter monitoring as currently under development for XUV-FELs.

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [6];  [6];  [6];  [6];  [6];  [6];  [7];  [5];  [8];  [8];  [9];  [8];  [10]
+ Show Author Affiliations
  1. Hochschule Emden/Leer Univ. of Applied Sciences (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Hochschule Emden/Leer Univ. of Applied Sciences (Germany)
  3. Hochschule Emden/Leer Univ. of Applied Sciences (Germany); Inst. of the Helmholtz-Zentrum Dresden-Rossendorf (Germany)
  4. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic)
  5. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  6. Elettra Sincrotrone Trieste (Italy)
  7. Univ. of Hamburg (Germany)
  8. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Polish Academy of Sciences (PAS), Krakow (Poland)
  10. Hochschule Emden/Leer Univ. of Applied Sciences (Germany); Carl von Ossietzky Univ. (Germany)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; German Ministry of Education and Research
OSTI Identifier:
1547231
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Laser and Particle Beams
Additional Journal Information:
Journal Volume: 37; Journal Issue: 2; Journal ID: ISSN 0263-0346
Publisher:
Cambridge University Press
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Free-electron laser; XUV; X-ray

Citation Formats

Tkachenko, Victor, Büscher, Martin, Höppner, Hauke, Medvedev, Nikita, Lipp, Vladimir, Rossi, Giulio Maria, Capotondi, Flavio, Finetti, Paola, Pedersoli, Emanuele, Nikolov, Ivaylo, Danailov, Mitcho, Giannessi, Luca, Prandolini, Mark J., Toleikis, Sven, Mecseki, Katalin, Windeler, Matthew, Ziaja, Beata, Tavella, Franz, and Teubner, Ulrich. Time-resolved ionization measurements with intense ultrashort XUV and X-ray free-electron laser pulses. United States: N. p., 2019. Web. doi:10.1017/s0263034619000326.
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Tkachenko, Victor, Büscher, Martin, Höppner, Hauke, Medvedev, Nikita, Lipp, Vladimir, Rossi, Giulio Maria, Capotondi, Flavio, Finetti, Paola, Pedersoli, Emanuele, Nikolov, Ivaylo, Danailov, Mitcho, Giannessi, Luca, Prandolini, Mark J., Toleikis, Sven, Mecseki, Katalin, Windeler, Matthew, Ziaja, Beata, Tavella, Franz, & Teubner, Ulrich. Time-resolved ionization measurements with intense ultrashort XUV and X-ray free-electron laser pulses. United States. doi:10.1017/s0263034619000326.
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Tkachenko, Victor, Büscher, Martin, Höppner, Hauke, Medvedev, Nikita, Lipp, Vladimir, Rossi, Giulio Maria, Capotondi, Flavio, Finetti, Paola, Pedersoli, Emanuele, Nikolov, Ivaylo, Danailov, Mitcho, Giannessi, Luca, Prandolini, Mark J., Toleikis, Sven, Mecseki, Katalin, Windeler, Matthew, Ziaja, Beata, Tavella, Franz, and Teubner, Ulrich. Mon . "Time-resolved ionization measurements with intense ultrashort XUV and X-ray free-electron laser pulses". United States. doi:10.1017/s0263034619000326. https://www.osti.gov/servlets/purl/1547231.
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@article{osti_1547231,
title = {Time-resolved ionization measurements with intense ultrashort XUV and X-ray free-electron laser pulses},
author = {Tkachenko, Victor and Büscher, Martin and Höppner, Hauke and Medvedev, Nikita and Lipp, Vladimir and Rossi, Giulio Maria and Capotondi, Flavio and Finetti, Paola and Pedersoli, Emanuele and Nikolov, Ivaylo and Danailov, Mitcho and Giannessi, Luca and Prandolini, Mark J. and Toleikis, Sven and Mecseki, Katalin and Windeler, Matthew and Ziaja, Beata and Tavella, Franz and Teubner, Ulrich},
abstractNote = {Abstract Modern free-electron lasers (FEL) operating in XUV (extreme ultraviolet) or X-ray range allow an access to novel research areas. One instance is the ultrafast ionization of a solid by an intense femtosecond FEL pulse in XUV which consequently leads to a change of the complex index of refraction on an ultrashort timescale. The photoionization and subsequent impact ionization resulting in electronic and atomic dynamics are modeled with our hybrid code XTANT(X-ray thermal and non-thermal transitions) and a Monte Carlo code XCASCADE(X-ray-induced electron cascades). The simulations predict the temporal kinetics of FEL-induced electron cascades and thus yield temporally and spatially resolved information on the induced changes of the optical properties. In a series of experiments at FERMI and LCLS, single shot measurements with spatio-temporal encoding of the ionization process have been performed by a correlation of the FEL pump pulse with an optical femtosecond probe pulse. An excellent agreement between the experiment and the simulation has been found. Furthermore, we demonstrate that such kind of experiments forms the basis for pulse duration and arrival time jitter monitoring as currently under development for XUV-FELs.},
doi = {10.1017/s0263034619000326},
journal = {Laser and Particle Beams},
number = 2,
volume = 37,
place = {United States},
year = {2019},
month = {4}
}
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DOI:  10.1017/s0263034619000326
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