Temperature dependence of absorption cross-section of H2O, HOD, and D2O in the spectral region 140-193nm

Chao Yu Chung, Eh Piew Chew, Bing Ming Cheng, Mohammed Bahou, Yuan-Pern Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Measurements of absolute photoabsorption cross-sections of H2O, D2O and HOD in the spectral range 140-195nm were performed at 295, 275, and 250K using a double-beam absorption cell with a synchrotron radiation source. The absorption cross-sections in the spectral range 150-174 nm are nearly invariant upon isotopic substitution, but become smaller for heavier isotopomers in the region λ >174 nm. For each isotopomer, absorption cross-sections are nearly temperature independent in the spectral range 140-173 nm, but exhibit a small negative temperature dependence for wavelengths greater than 173 nm.

Original languageEnglish
Pages (from-to)1572-1576
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume467-468
Issue numberPART II
DOIs
StatePublished - 21 Jul 2001

Keywords

  • Absorption cross-section
  • HOD

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