X‐Ray Spectroscopy at Free Electron Lasers

Gawełda, Wojciech; Szlachetko, Jakub; Milne, Christopher J.

doi:10.1002/9781118844243.ch22

Cited by 12 publications

(10 citation statements)

References 161 publications

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“…The layout of the Experimental Station Alvra (ESA) hutch is shown in Figure 13. Alvra is focussed primarily on two techniques: X-ray spectroscopy [18,130] and Serial Femtosecond Crystallography (SFX) [131,132]. X-ray absorption spectroscopy (XAS) involves measuring the X-ray transmission or X-ray fluorescence of a sample as a function of incident monochromatic X-ray energy [16].…”

Section: Experimental Station Alvramentioning

confidence: 99%

“…This combination of high brightness and ultrashort pulses produces extraordinary peak intensities, which has proven extremely attractive for certain fields of research in addition to creating entirely new fields which were not previously feasible, such as nonlinear X-ray signals [10][11][12][13][14][15]. Due to the extensive experience amongst researchers with storage ring X-ray techniques [16], many of the first experiments [17] applied well-established methods, such as X-ray spectroscopy and scattering, but in a time-resolved manner, taking advantage of the ultrashort pulse durations to measure dynamics in matter [18][19][20][21]. As experience with the facilities has increased in recent years, new techniques have been developed, including diffract-before-destruction methods, where the short X-ray pulse scatters from the sample before the atoms can move [22], providing the ability to measure room-temperature, radiation-damage-free structures.…”

Section: Introductionmentioning

confidence: 99%

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SwissFEL: The Swiss X-ray Free Electron Laser

et al. 2017

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The SwissFEL X-ray Free Electron Laser (XFEL) facility started construction at the Paul Scherrer Institute (Villigen, Switzerland) in 2013 and will be ready to accept its first users in 2018 on the Aramis hard X-ray branch. In the following sections we will summarize the various aspects of the project, including the design of the soft and hard X-ray branches of the accelerator, the results of SwissFEL performance simulations, details of the photon beamlines and experimental stations, and our first commissioning results.

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Section: Experimental Station Alvramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SwissFEL: The Swiss X-ray Free Electron Laser

et al. 2017

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“…[5,6] This variable gap allows the photon energy to be easily changed, which is important for X-ray spectroscopy experiments. [7] The soft X-ray Athos branch of the accelerator uses the first two Aramis linac stages to achieve an electron energy of 3 GeV, and a fast electron kicker to direct the beam into the Athos undulators. Linac 3 can be used to accelerate or decelerate the electrons, allowing it to cover the full electron energy range (2.1-5.8 GeV) while maintaining a stable electron energy for the Athos branch.…”

Section: Facilitymentioning

confidence: 99%

“…4. ESA is focussed primarily on two techniques: X-ray spectroscopy [7,25] and Serial Femtosecond Crystallography (SFX). [26,27] X-ray spectroscopy involves measuring the X-ray transmission or X-ray fluorescence of a sample as a function of monochromatic X-ray energy.…”

Section: Beamlinesmentioning

confidence: 99%

Opportunities for Chemistry at the SwissFEL X-ray Free Electron Laser

Milne¹,

Beaud

Deng

et al. 2017

Chimia

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X-ray techniques have long been applied to chemical research, ranging from powder diffraction tools to analyse material structure to X-ray fluorescence measurements for sample composition. The development of high-brightness, accelerator-based X-ray sources has allowed chemists to use similar techniques but on more demanding samples and using more photon-hungry methods. X-ray Free Electron Lasers (XFELs) are the latest in the development of these large-scale user facilities, opening up new avenues of research and the possibility of more advanced applications for a range of research. The SwissFEL XFEL project at the Paul Scherrer Institute will begin user operation in the hard X-ray (2.1-12.4 keV) photon energy range in 2018 with soft X-ray (240-1930 eV) user operation to follow and here we will present the details of this project, it's operating capabilities, and some aspects of the experimental stations that will be particularly attractive for chemistry research. SwissFEL is a revolutionary new machine that will complement and extend the time-resolved chemistry efforts in the Swiss research community.

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“…HEROS is a new approach and is becoming more and more recognized in the field of X-ray spectroscopy (see, e.g., Refs. [42,[52][53][54][55][56][57][58][59][60][61][62][63][64]). …”

Section: Introductionmentioning

confidence: 99%

High energy resolution off-resonant spectroscopy: A review

Błachucki

Hoszowska

Dousse

et al. 2017

Spectrochimica Acta Part B: Atomic Spectroscopy

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We review the high energy resolution off-resonant spectroscopy (HEROS) technique. HEROS probes the unoccupied electronic states of matter in a single-shot manner thanks to the combination of off-resonant excitation around atomic core states using wavelength dispersive X-ray detection setups. In this review we provide a general introduction to the field of X-ray spectroscopy together with the specification of the available X-ray techniques and X-ray methodologies. Next, the theoretical description of the HEROS approach is introduced with a special focus on the derivation of the X-ray emission and X-ray absorption correspondence relation at off-resonant excitation conditions. Finally, a number of experimental HEROS reports are reviewed in the field of chemistry and material science. We emphasize the applicability of HEROS to pulsed X-ray sources, like X-ray free electron lasers, and support the review with experimental examples. The review is complemented with perspectives on and possible further applications of the HEROS technique to the field of X-ray science.

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X‐Ray Spectroscopy at Free Electron Lasers

Cited by 12 publications

References 161 publications

SwissFEL: The Swiss X-ray Free Electron Laser

SwissFEL: The Swiss X-ray Free Electron Laser

Opportunities for Chemistry at the SwissFEL X-ray Free Electron Laser

High energy resolution off-resonant spectroscopy: A review

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