Monochromator for a soft X-ray photochemistry beamline BL27SU of SPring-8

Ohashi, Haruhiko; Ishiguro, Eiji; Tamenori, Y.; Okumura, Hajime; Hiraya, Atsunari; Yoshida, Hiroaki; Senba, Yasunori; Okada, Kazumasa; Saitô, Norio; Suzuki, Isao; Ueda, Kiyoshi; Ibuki, Toshio; Nagaoka, Shin‐ichi; Koyano, Inosuke; Ishikawa, Tetsuya

doi:10.1016/s0168-9002(01)00405-3

Cited by 192 publications

(79 citation statements)

References 13 publications

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“…The beamline is dedicated to soft X-ray absorption spectroscopy. [12,13] All samples were baked at 400°C in ultra high vacuum (< 5×10 −9 mbar) in order to remove any atmospheric adsorbates before they were transferred to the experimental station. [14] The spectra were then recorded at ambient room temperature.…”

Section: Resultsmentioning

confidence: 99%

“…These values match the reference values for free N 2 molecules well. [12,18] The effective c-axis of the confining space is infinite, which should-unlike a tight c-axis-have no effect on the line shape. [19,20] The unchanged lifetime of the X-ray-excited π states, as well as the unaltered vibrational levels, are in-line with one-dimensional containment.…”

Section: Resultsmentioning

confidence: 99%

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One-dimensional N2 gas inside single-walled carbon nanotubes

Kramberger

Thurakitseree

Koh

et al. 2013

Carbon

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The unexpected presence of a linear arrangement of co-axially oriented N 2 molecules inside aligned single-walled carbon nanotubes is revealed by high resolution near-edge x-ray absorption spectroscopy. The encapsulated N 2 molecules exhibit free stretching vibrations with a long electronic lifetime of the x-ray-excited anti-bonding π ⋆ states. Molecular dynamics simulations confirm that narrow-diameter nanotubes (d < 1 nm) are crucial for stabilizing the linear arrangement of aligned N 2 molecules.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

One-dimensional N2 gas inside single-walled carbon nanotubes

Kramberger

Thurakitseree

Koh

et al. 2013

Carbon

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“…The experiments were performed at the c branch of the photochemistry beamline 27SU at SPring-8, Japan, which was equipped with a high-resolution soft x-ray monochromator with a varied-line-space grating [30,31]. The radiation source was a figure-8 undulator, which provided horizontally or vertically linear polarized light after the undulator gap was set appropriately [32,33].…”

Section: Methodsmentioning

confidence: 99%

Symmetry and vibrationally resolved absorption spectra near theN Kedges ofN2O: Experiment and theory

et al. 2011

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This is the published version of a paper published in Physical Review A. Atomic, Molecular, and Optical Physics. Citation for the original published paper (version of record):Ehara, M., Horikawa, T., Fukuda, R., Nakatsuji, H., Tanaka, T. et al. (2011) Symmetry and vibrationally resolved absorption spectra near the N K edges of N2O: experiment and theory.Physical Review A. Atomic, Molecular, and Optical Physics, 83(6) In this study, angle-resolved energetic-ion yield spectra were measured in the N 1s excitation region of N 2 O. A Franck-Condon analysis based on ab initio two-dimensional potential energy surfaces of the coreexcited Rydberg states, which were calculated by the symmetry-adapted cluster-configuration interaction method, reproduced observed vibrational excitations specific to the individual Rydberg states well and enabled quantitative assignments. Geometric changes in the terminal nitrogen N t 1s and the central nitrogen N c 1s excited states with respect to the 3pπ , 3pσ , and 4sσ transitions were analyzed. The coupling of these valence and Rydbergs states was examined based on the second moment analysis. Irregular Rydberg-state behavior in the N c 1s −1 4sσ state was observed.

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“…1) is of Hettrick-type. It has three exchangable varied line-space plane gratings and covers the photon energy region between 150 eV and 2.5 keV [30]. The highest achievable resolutions are between 10,000 and 20,000, depending on energy.…”

Section: Methodsmentioning

confidence: 99%