Ultrafast Time-Resolved Hard X-Ray Emission Spectroscopy on a Tabletop

Miaja‐Avila, Luis; O’Neil, Galen C.; Joe, Young Il; Alpert, Bradley K.; Damrauer, Niels H.; Doriese, W. B.; Fatur, Steven M.; Fowler, Joseph W.; Hilton, G. C.; Jimenez, Ralph; Reintsema, C. D.; Schmidt, Daniel R.; Silverman, Kevin L.; Swetz, Daniel S.; Tatsuno, H.; Ullom, Joel N.

doi:10.1103/physrevx.6.031047

Cited by 33 publications

(32 citation statements)

References 66 publications

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“…Arrays of transition-edge sensor (TES) microcalorimeter x-ray spectrometers have a combination of high collection efficiency and high resolving power that enable many otherwise difficult or impossible experiments. For example, they have been used for table-top time-resolved x-ray absorption and emission spectroscopy [1,2], probing the strong force with hadronic atoms [3], and partial fluorescence yield x-ray near-edge absorption spectroscopy of dilute samples [4]. The spectrometers used in these and other experiments had TES arrays with pixels consisting of a Mo-Cu bilayer with an absorber made from evaporated Bi [5].…”

Section: Introductionmentioning

confidence: 99%

On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers

et al. 2019

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We use narrow spectral lines from the x-ray spectra of various highly charged ions to measure low-energy tail-like deviations from a Gaussian response function in a microcalorimter x-ray spectrometer with Au absorbers at energies from 650 eV to 3320 eV. We review the literature on low energy tails in other microcalorimter x-ray spectrometers and present a model that explains all the reviewed tail fraction measurements. In this model a low energy tail arises from the combination of electron escape and energy trapping associated with Bi x-ray absorbers.

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Section: Introductionmentioning

confidence: 99%

On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers

et al. 2019

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“…Ultrashort coherent X-ray pulses provide a unique combination of record-high spatial and temporal resolution, which finds numerous applications, ranging from dynamical imaging of nanostructured materials and controlling chemical reactions to manipulation of absorption and ionization properties of atoms on a sub-fs time scale [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. One of the most promising applications of such pulses is an ultrafast imaging of large biological molecules, in particular, proteins.…”

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confidence: 99%

Attosecond Pulse Amplification in a Plasma-Based X-Ray Laser Dressed by an Infrared Laser Field

et al. 2019

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We suggest a technique to amplify a train of attosecond pulses, produced by high-harmonic generation (HHG) of an infrared (IR) laser field, in an active medium of a plasma-based X-ray laser. This technique is based on modulation of transition frequency of the X-ray laser by the same IR field, as used to generate the harmonics, via linear Stark effect, which results in redistribution of the resonant gain and simultaneous amplification of a wide set of harmonics in the incident field. We propose an experimental implementation of the suggested technique in active medium of C 5+ ions at wavelength 3.4 nm in the "water window" range and show the possibility to amplify by two orders of magnitude a train of attosecond pulses with pulse duration down to 100 as. We show also a possibility to isolate a single attosecond pulse from the incident attosecond pulse train during its amplification in optically deep modulated medium. Abstract:In this supplemental material we derive an analytical solution describing an amplification of the highharmonic field in an active medium of a plasma-based X-ray laser in the linear regime within the three-level medium model and constant population inversion approximation. We provide also more detailed numerical study of an amplification process in both linear and nonlinear regimes taking into account a saturation effect within the fivelevel medium model.

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“…Past implementations of XAFS used both laser plasma emission and synchrotron radiation from large (synchrotrons, Omega, NIF) and also from smaller laser plasma based facilities [1][2][3][4]. These incoherent soft X-ray sources typically provide a peak brilliance of less than 10 26 photons/s/mrad 2 /mm 2 /1% bandwidth with time resolution ~1ps [5].…”

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confidence: 99%

Near- and Extended-Edge X-Ray-Absorption Fine-Structure Spectroscopy Using Ultrafast Coherent High-Order Harmonic Supercontinua

et al. 2018

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Recent advances in high-order harmonic generation have made it possible to use a tabletop-scale setup to produce spatially and temporally coherent beams of light with bandwidth spanning 12 octaves, from the ultraviolet up to x-ray photon energies >1.6 keV. Here we demonstrate the use of this light for x-ray-absorption spectroscopy at the K- and L-absorption edges of solids at photon energies near 1 keV. We also report x-ray-absorption spectroscopy in the water window spectral region (284-543 eV) using a high flux high-order harmonic generation x-ray supercontinuum with 10^{9} photons/s in 1% bandwidth, 3 orders of magnitude larger than has previously been possible using tabletop sources. Since this x-ray radiation emerges as a single attosecond-to-femtosecond pulse with peak brightness exceeding 10^{26} photons/s/mrad^{2}/mm^{2}/1% bandwidth, these novel coherent x-ray sources are ideal for probing the fastest molecular and materials processes on femtosecond-to-attosecond time scales and picometer length scales.

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Ultrafast Time-Resolved Hard X-Ray Emission Spectroscopy on a Tabletop

Cited by 33 publications

References 66 publications

On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers

On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers

Attosecond Pulse Amplification in a Plasma-Based X-Ray Laser Dressed by an Infrared Laser Field

Near- and Extended-Edge X-Ray-Absorption Fine-Structure Spectroscopy Using Ultrafast Coherent High-Order Harmonic Supercontinua

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