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Title: Water Structure Studied by Far Infrared Spectroscopy in FTIR Beam Line of MIRRORCLE 20

Abstract

Far infrared vibrational Spectroscopy for distilled water was performed by Fourier Transform Infrared Spectroscopy (FT-IR) in the FTIR beam line of MIRRORCLE 20. Synchrotron radiation was utilized as a light source for the absorption Spectroscopy in the frequency range from 100cm-1 to 20cm-1. Off-line measurements by black body radiation of ceramic heater were also examined in the range from 400cm-1 to 50cm-1. Wide range spectrum was obtained after the SR data merged the off-line data. We report the recent development in the beam line and the examples of spectra related to the water structure.

Authors:
 [1]; ;  [2];  [1];  [3]
  1. Synchrotron Light Life Science Center, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577 (Japan)
  2. Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577 (Japan)
  3. (Japan)
Publication Date:
OSTI Identifier:
21056954
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 902; Journal Issue: 1; Conference: 2. international symposium on portable synchrotron light sources and advanced applications, Shiga (Japan), 15-17 Jan 2007; Other Information: DOI: 10.1063/1.2723626; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; BLACKBODY RADIATION; CERAMICS; FAR INFRARED RADIATION; FOURIER TRANSFORM SPECTROMETERS; FOURIER TRANSFORMATION; INFRARED SPECTRA; LIGHT SOURCES; PHOTON BEAMS; PORTABLE SOURCES; SYNCHROTRON RADIATION; WATER

Citation Formats

Miura, Nobuhiro, Moon, Ahsa, Kitagawa, Toshimichi, Yamada, Hironari, and Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577. Water Structure Studied by Far Infrared Spectroscopy in FTIR Beam Line of MIRRORCLE 20. United States: N. p., 2007. Web. doi:10.1063/1.2723626.
Miura, Nobuhiro, Moon, Ahsa, Kitagawa, Toshimichi, Yamada, Hironari, & Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577. Water Structure Studied by Far Infrared Spectroscopy in FTIR Beam Line of MIRRORCLE 20. United States. doi:10.1063/1.2723626.
Miura, Nobuhiro, Moon, Ahsa, Kitagawa, Toshimichi, Yamada, Hironari, and Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577. Fri . "Water Structure Studied by Far Infrared Spectroscopy in FTIR Beam Line of MIRRORCLE 20". United States. doi:10.1063/1.2723626.
@article{osti_21056954,
title = {Water Structure Studied by Far Infrared Spectroscopy in FTIR Beam Line of MIRRORCLE 20},
author = {Miura, Nobuhiro and Moon, Ahsa and Kitagawa, Toshimichi and Yamada, Hironari and Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577},
abstractNote = {Far infrared vibrational Spectroscopy for distilled water was performed by Fourier Transform Infrared Spectroscopy (FT-IR) in the FTIR beam line of MIRRORCLE 20. Synchrotron radiation was utilized as a light source for the absorption Spectroscopy in the frequency range from 100cm-1 to 20cm-1. Off-line measurements by black body radiation of ceramic heater were also examined in the range from 400cm-1 to 50cm-1. Wide range spectrum was obtained after the SR data merged the off-line data. We report the recent development in the beam line and the examples of spectra related to the water structure.},
doi = {10.1063/1.2723626},
journal = {AIP Conference Proceedings},
number = 1,
volume = 902,
place = {United States},
year = {Fri Mar 30 00:00:00 EDT 2007},
month = {Fri Mar 30 00:00:00 EDT 2007}
}
  • A beam line for far infrared spectroscopy using Fourier Transform Infrared Spectrometer (FTIR) has been developed as a facility of tabletop synchrotron MIRRORCLE 20 in Ritsumeikan University and has been utilized to study liquid structure through analysis of intermolecular vibration in aqueous solutions. We report recent developments in the system and the examples of measured spectra.
  • The tabletop synchrotron MIRRORCLE-20 has been optimized as an FIR beam source for the life science research. To collect the radiation from whole arc of the orbit, there is a magic mirror and a circular mirror installed within MIRRORCLE-20. There is an FT-IR and a cooled silicon bolometer for FIR. According to the specification of MIRRORCLE-20, the e-beam current is 100mA, the pulse width is 0.1msec, the peak storage current is 3A and the repetition is 100Hz. The power of MIR (wavelength shorter than 50{mu}m) measured by thermopile is about 59mW and that of FIR (wavelength longer than 50{mu}m) estimatedmore » by theoretical spectrum is about 8.5mW.« less
  • We report the first high-resolution spectra for the out-of-plane librational vibration in the water dimer. Three vibrational subbands comprising a total of 188 transitions have been measured by diode laser spectroscopy near 500 cm{sup −1} and assigned to (H{sub 2}O){sub 2} libration-rotation-tunneling eigenstates. The band origin for the K{sub a} = 1 subband is ~524 cm{sup −1}. Librational excitation increases the interchange and bifurcation hydrogen bond rearrangement tunneling splittings by factors of 3-5 and 4-40, respectively. Analysis of the rotational constants obtained from a nonlinear least squares fit indicates that additional external perturbations to the energy levels are likely.
  • This work applied light-induced FTIR difference spectroscopy to investigate the structure of the radical cation P{sub 840} in the reaction center (RC) of a green sulfur bacterium. This RC preparation retains the photochemical activities to reduce the F{sub A}/F{sub B} centers and to oxidize cyt c{sub 551}. From the observed spectra, the structural symmetry, bond interactions and charge delocalization were discussed. 52 refs., 5 figs.
  • The tabletop synchrotron MIRRORCLE-20 is optimized as MIR and FIR beam source for the life science research. To collect the whole radiation, we have installed a magic mirror and a circular mirror within MIRRORCLE-20. There are two application beam lines in MIRRORCLE-20. One is mid IR beam line, and another is far IR beam line. We have grating spectrometer and cooled MCT detector for MIR, and FT-TR and cooled silicon bolometer for FIR. According to the specification of MIRRORCLE-20, the e-beam current is 80mA, the pulse width is 0.1 msec, the peak storage current is 2.4A, and the repetition ismore » 100Hz. The MIR power measured with MCT detector and thermopile is found to be about 50 mW.« less