大型放射光施設 SPring-8

問い合わせ番号

INS-0000000376

Measurement system in transmission mode

  The transmission mode is standard for XAFS measurement and is performed by two ionization chambers. The covered energy range is from 3.8 to 113 keV. The adequate combination of ionization chambers and filling gases should be selected depend on the energy range of the experiment as followings.

• Gas-flow type ionization chamber
  • Gas : Helium, Nitrogen, Argon, Krypton, and its mixture
  • Length/number : 6.5 cm/1, 17 cm/2, 31 cm/1
  • Maximum voltage : 2,000 volts
• Gas-closed type ionization chamber
  • Gas : Xenon (1 atm.)
  • Length/number : 17 cm/1, 31 cm/1
  • Maximum voltage : 2,000 volts
  Ca K-edge XAFS spectra of Ca(OH)₂ measured in transmission mode at room temperature [1].
  Pb K-edge XAFS spectra of Pb foil in transmission mode at 12 K [2].

References

1. T. Ishizuka, T. Yamamoto, T. Tanaka et al., Energy Fuel 15, 438 (2001).
2. Y. Nishihata, J. Mizuki, S. Emura and T. Uruga. J. Synchrotron Rad. 8, 294 (2001).