Triply differential (e,2e) studies of phenol

Abstract

We have measured (e,2e) triple differential cross sections (TDCS) for the electron-impact ionisation of phenol with coplanar asymmetrical kinematics for an incident electron energy of 250 eV. Experimental measurements of the angular distribution of the slow outgoing electrons at 20 eV are obtained when the incident electron scatters through angles of -5°, -10°, and -15°, respectively. The TDCS data are compared with calculations performed within the molecular 3-body distorted wave model. In this case, a mixed level of agreement, that was dependent on the kinematical condition being probed, was observed between the theoretical and experimental results in the binary peak region. The experimental intensity of the recoil features under all kinematical conditions was relatively small, but was still largely underestimated by the theoretical calculations.

Intermediate energy electron impact excitation of composite vibrational modes in phenol

“…1). Energy loss spectra were collected at each θ and E 0 (15,20,30, and 40 eV), by recording the number of scattered electrons detected at each energy loss value. The true scattered electron count rate at each energy loss was recorded using a multichannel scaler (MCS) synchronised to a linear voltage ramp that varied the detected energy loss between −0.1 and 0.8 eV.…”

Integral elastic, electronic-state, ionization, and total cross sections for electron scattering with furfural

“…[4][5][6][7][8] The present submission is a new step in this series of investigations with furfural, and as it is the integral cross sections (ICSs) that are generally of most interest to the modelling communities [9][10][11][12][13][14] it therefore represents an important achievement. Note that this follows on from a similarly extensive study on phenol, [15][16][17][18][19][20] another important by-product from the application of atmosphericpressure plasmas to biomass.…”

The electron-furfural scattering dynamics for 63 energetically open electronic states

“…[4][5][6][7][8] The present submission is a new step in this series of investigations with furfural, and as it is the integral cross sections (ICSs) that are generally of most interest to the modelling communities [9][10][11][12][13][14] it therefore represents an important achievement. Note that this follows on from a similarly extensive study on phenol, [15][16][17][18][19][20] another important by-product from the application of atmosphericpressure plasmas to biomass. While our independent atom model with screening corrected additivity rule (IAM-SCAR) calculations have had some success, in describing the electron scattering process down to energies (E 0 ) ∼ 20 eV with some molecules, [21][22][23] there are other systems [24][25][26] where this approach does not yield cross sections that are in agreement with measured data for energies as high as 50 eV.…”