Fluorescence from photoexcitation of C2H5OH by Vacuum ultraviolet radiation

Photoionization cross sections and asymmetry parameters for ethanol. A theoretical study

“…The MQDO results are in rather good agreement, within the error bars, with the photoionization measurements [2] and with the photoionization cross section derived from measurements reported by Koizumi et al [10], except for photon energy less than 10.9 eV. Photoionization cross sections derived from measurements performed by Ham et al [5] are systematically lower than the MQDO and the other experimental results.…”

“…It is also observed in Figure 1 that the MQDO photoionization cross-section profile for the production of the molecular cation in its ground state shows a maximum located a few electron-volts above the threshold, followed by a smooth decrease with increasing the photon energy. In order to get a better view of the comparison between the present results and the experimental ones, in Figure 2 we have plotted our results together with the most recent photoionization cross section data reported by Cool et al [2] and those derived from photoabsorption measurements [5,10,11] over the narrow range of photon energies for which the experimental results are available. The MQDO results are in rather good agreement, within the error bars, with the photoionization measurements [2] and with the photoionization cross section derived from measurements reported by Koizumi et al [10], except for photon energy less than 10.9 eV.…”

“…In order to convert photoabsorption cross sections into photoionization cross sections, we have used the photoionization yields measured by Person and Nicole [9]. The photoionization cross section derived from photoabsorption measurements of Koizumi et al [10], Han et al [5] and Feng and Brion [11] together with the present calculations are shown in Figure 1. The early photoionization cross section measurements of Person and Nicole [9] have also been included in Figure 1.…”

“…It is a common hydrocarbon combustion intermediate and an environmental friendly fuel [4]. In addition, ethanol has been reported to play a relevant role in plasma-assisted chemical deposition processes of diamond-like film [5]. Properties related to the spectrum of this molecule are of considerable interest in the study of the hydrocarbon combustion processes [2] and in the study of the interstellar medium, where this molecule is present [6].…”

“…Most of the spectroscopic studies have been mainly focused on the determination of the energies of their electronically excited states. Concerning the spectral intensities, photoabsorption measurements of ethanol have been performed by several experimentalists using emission line sources [7][8][9], synchrotron radiation sources [5,10] and high-resolution dipole (e,e) spectroscopy [11] in the vacuum ultraviolet region covering from 5 to 32 eV. By contrast, photoionization cross-section data are scarce.…”