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Resonant X-ray emis...
Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser
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- Fuller, Franklin D. (författare)
- SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
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- Loukianov, Anton (författare)
- SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
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- Takanashi, Tsukasa (författare)
- Tohoku Univ, Sendai, Miyagi, Japan.
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- You, Daehyun (författare)
- Tohoku Univ, Sendai, Miyagi, Japan.
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- Li, Yiwen (författare)
- Tohoku Univ, Sendai, Miyagi, Japan.
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- Ueda, Kiyoshi (författare)
- Tohoku Univ, Sendai, Miyagi, Japan.
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- Fransson, Thomas (författare)
- SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
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- Yabashi, Makina (författare)
- RIKEN, Spring Ctr 8, Sayo, Hyogo, Japan.
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- Katayama, Tetsuo (författare)
- RIKEN, Spring Ctr 8, Sayo, Hyogo, Japan.;Japan Synchrotron Radiat Res Inst, Sayo, Hyogo, Japan.
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- Weng, Tsu-Chien (författare)
- ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China.
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- Alonso-Mori, Roberto (författare)
- SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
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- Bergmann, Uwe (författare)
- Univ Wisconsin, Madison, WI USA.
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- Kern, Jan (författare)
- Lawrence Berkeley Natl Lab, Berkeley, CA USA.
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- Yachandra, Vittal K. (författare)
- Lawrence Berkeley Natl Lab, Berkeley, CA USA.
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- Wernet, Philippe, 1971- (författare)
- Uppsala universitet,Kemisk och biomolekylär fysik
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- Yano, Junko (författare)
- Lawrence Berkeley Natl Lab, Berkeley, CA USA.
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SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA Tohoku Univ, Sendai, Miyagi, Japan. (creator_code:org_t)
- 2021-06-07
- 2021
- Engelska.
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Ingår i: Communications Chemistry. - : Springer Nature. - 2399-3669. ; 4:1
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- X-ray absorption and X-ray free electron lasers are important tools to study chemical and structural dynamics, but spectral details like pre-edge features are inherently hard to detect. Here, the authors show that stochastic spectroscopy can yield similar spectral information to monochromatic spectroscopies, while increasing signal yield and reducing acquisition time. Hard X-ray spectroscopy is an element specific probe of electronic state, but signals are weak and require intense light to study low concentration samples. Free electron laser facilities offer the highest intensity X-rays of any available light source. The light produced at such facilities is stochastic, with spikey, broadband spectra that change drastically from shot to shot. Here, using aqueous ferrocyanide, we show that the resonant X-ray emission (RXES) spectrum can be inferred by correlating for each shot the fluorescence intensity from the sample with spectra of the fluctuating, self-amplified spontaneous emission (SASE) source. We obtain resolved narrow and chemically rich information in core-to-valence transitions of the pre-edge region at the Fe K-edge. Our approach avoids monochromatization, provides higher photon flux to the sample, and allows non-resonant signals like elastic scattering to be simultaneously recorded. The spectra obtained match well with spectra measured using a monochromator. We also show that inaccurate measurements of the stochastic light spectra reduce the measurement efficiency of our approach.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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Fuller, Franklin ...
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Loukianov, Anton
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Takanashi, Tsuka ...
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You, Daehyun
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Li, Yiwen
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Ueda, Kiyoshi
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visa fler...
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Fransson, Thomas
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Yabashi, Makina
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Katayama, Tetsuo
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Weng, Tsu-Chien
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Alonso-Mori, Rob ...
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Bergmann, Uwe
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Kern, Jan
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Yachandra, Vitta ...
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Wernet, Philippe ...
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Yano, Junko
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visa färre...
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