|Title||Absolute photoabsorption cross-sections (oscillator strengths) for ethanol (5-200 eV)|
|Publication Type||Journal Article|
|Year of Publication||2002|
|Authors||Feng, RF, Brion, CE|
|Date Published||SEP 15|
Absolute photoabsorption oscillator strengths (cross-sections) in the valence-shell discrete and continuum regions of ethanol (C2H5OH) have been measured from 5 to 32 eV using high-resolution (similar to0.05 eV fwhm) dipole (e,e) spectroscopy. A wide-range spectrum, spanning the UV, VUV and soft X-ray regions, from 5 to 200 eV has also been obtained at low-resolution (similar to1 eV fwhm), and this has been used to determine the absolute oscillator strength scale by employing valence-shell TRK (i.e., S(0)) sum-rule normalization. The presently reported high- and low-resolution absolute photoabsorption oscillator strengths are compared with previously published data from direct photoabsorption measurements in those limited energy regions where such data are available. Evaluation of the S(-2) sum using the presently reported absolute differential photoabsorption oscillator strength data gives a static dipole polarizability for ethanol in excellent agreement (within 0.5%) with previously reported polarizability values. Other dipole sums S(u), (u = -1, -3, -4, -5, -6, -8, -10), and logarithmic dipole sums L(u), (u = -1 to -6), are also determined from the presently reported absolute differential photoabsorption oscillator strength data using dipole sum-rules. (C) 2002 Elsevier Science B.V. All rights reserved.