|Title||Quantitative photoabsorption of methyl propyl ether in the UV, VUV and soft X-ray regions (5-200 eV)|
|Publication Type||Journal Article|
|Year of Publication||2002|
|Authors||Feng, RF, Brion, CE|
|Date Published||DEC 15|
Absolute photoabsorption oscillator strengths (cross-sections) in the valence-shell discrete and continuum regions methyl propyl ether CH3OC3H7 have been measured from 5 to 32 eV using high-resolution (similar to0.05 eV fwhm) dipole (e,e) spectroscopy. Wide-range spectra, spanning the UV, VUV and soft X-ray regions, have also been obtained at low-resolution (similar to1 eV fwhm) from 5 to 200 eV for methyl propyl ether, and these wide-range spectra have been used to determine the absolute oscillator strength scales by employing valence-shell TRK (i.e., S(0)) sum-rule normalization. Evaluations of the S(-2) sum using the presently reported absolute differential photoabsorption oscillator strength data give a static dipole polarizability for methyl propyl ether in good agreement 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. The presently reported absolute photoabsorption oscillator strength data for methyl propyl ether (and all other atoms and molecules we have studied) are web-accessible at ftp.chem.ubc.ca/pub/cooper. (C) 2002 Elsevier Science B.V. All rights reserved.