Absolute photoionization cross sections of two cyclic ketones: cyclopentanone and cyclohexanone

Absolute photoionization cross sections of atomic oxygen.

The abso lu t e va lues of t h e pho to ion iza t ion c r o s s s e c t i o n s of a tomic oxygen have been measured from t h e i o n i z a t i o n th reshold t o 120 1. An au to ion iz ing resonance belonging t o t h e 2 ~ 2 ~ ~ ( 4 ~ )3p( DO, 3s0, 3p0) t r a n s i t i o n h a s been observed a t 479.43 1 and another l i n e a t 389.97 1. The experimental d a t a is i n e x c e l l e n t agree...

Determination of absolute photoionization cross sections of the phenyl radical.

Photoionization cross sections of the phenyl radical to form the phenyl cation were measured using tunable vacuum ultraviolet synchrotron radiation coupled with photofragment translational spectroscopy. The phenyl radical was produced via 193- or 248-nm dissociation of chlorobenzene. At 10.0 eV, the photoionization cross sections for the phenyl radical averaged over product channels were found ...

Determination of absolute photoionization cross sections for isomers of C3H5: allyl and 2-propenyl radicals

The photoionization (PI) cross sections of allyl and 2-propenyl radicals to form C3H þ 5 were measured using tunable vacuum ultraviolet (VUV) synchrotron radiation coupled with photofragment translational spectroscopy. At 10 eV, the cross sections were found to be 6.2 1.2 and 5.1 1.0 Mb, respectively. Using these values, the PI efficiency curves for each radical were placed on an absolute scale...

The Calculation of Photoionization Cross Sections

Relativistic photoionization cross sections for C II

High resolution measurements of photoionization cross sections for atomic ions are now being made on synchrotron radiation sources. The recent measurements by Kjeldsen etal. (1999) showed good agreement between the observed resonance features and the the theoretical calculations in the close coupling approximation (Nahar 1995). However, there were several observed resonances that were missing i...