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Title: Far infrared Spectroscopy with FTIR Beam Line of MIRRORCLE 20

Abstract

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.

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:
21049355
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436415; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION SPECTROSCOPY; AQUEOUS SOLUTIONS; BEAM PRODUCTION; FAR INFRARED RADIATION; FOURIER TRANSFORMATION; INFRARED SPECTRA; LIQUIDS; SYNCHROTRON RADIATION

Citation Formats

Miura, Nobuhiro, Moon, Ahsa, Nishikawa, Kishi, Kitagawa, Toshimichi, Hiraiwa, Nobuhiko, Yamada, Hironari, and Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi, 1-1-1, Kusatsu, Shiga 525-8577. Far infrared Spectroscopy with FTIR Beam Line of MIRRORCLE 20. United States: N. p., 2007. Web. doi:10.1063/1.2436415.
Miura, Nobuhiro, Moon, Ahsa, Nishikawa, Kishi, Kitagawa, Toshimichi, Hiraiwa, Nobuhiko, Yamada, Hironari, & Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi, 1-1-1, Kusatsu, Shiga 525-8577. Far infrared Spectroscopy with FTIR Beam Line of MIRRORCLE 20. United States. doi:10.1063/1.2436415.
Miura, Nobuhiro, Moon, Ahsa, Nishikawa, Kishi, Kitagawa, Toshimichi, Hiraiwa, Nobuhiko, Yamada, Hironari, and Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi, 1-1-1, Kusatsu, Shiga 525-8577. Fri . "Far infrared Spectroscopy with FTIR Beam Line of MIRRORCLE 20". United States. doi:10.1063/1.2436415.
@article{osti_21049355,
title = {Far infrared Spectroscopy with FTIR Beam Line of MIRRORCLE 20},
author = {Miura, Nobuhiro and Moon, Ahsa and Nishikawa, Kishi and Kitagawa, Toshimichi and Hiraiwa, Nobuhiko and Yamada, Hironari and Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Noji-higashi, 1-1-1, Kusatsu, Shiga 525-8577},
abstractNote = {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.},
doi = {10.1063/1.2436415},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}
  • 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.
  • 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
  • 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
  • Results are presented from FIR, sub-mm, and mm spectroscopic observations of the radio arc and the +20/+50 km/s molecular clouds in the Galactic center. The results for the radio arc are analyzed, including the spatial distribution of C II forbidden line emission, the spatial distribution of CO emission, the luminosity and mass of C(+) regions, and the CO 7 - 6 emission and line profiles. Model calculations are used to study molecular gas in the radio arc. In addition, forbidden C II, CO 7 - 6, and C(O-18) mapping is presented for the +20/+50 km/x clouds. Consideration is given tomore » the impact of the results on the interpretation of the physical conditions, excitation, and heating of the gas clouds in the arc and near the center. 65 refs.« 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.