Electron impact ionization of 1-propanol

Experimental measurements of the cations created in electron impact ionization have been undertaken for the primary isomer of propanol using a Hidden Quadrupole Mass Spectrometer (EPIC 300), with a mass resolution of 1 amu. The mass spectra recorded at an incident electron energy of 70 eV reveals the relative probability of forming 50 different cations, by either direct ionization or dissociative ionization. Individual partial ionization cross sections (PICS) for 31 different cations were measured for the first time in this work, for the incident electron energy range from 10 to 100eV. Also, appearance energies (AEs) and Wannier exponents for the 16 most intense cations formed in electron collisions with 1-propanol are reported. Where possible, those results are compared to those from an earlier investigation. Total Ionization Cross Sections (TICS) were also obtained from the sum of the measured PICS, for nearly all cations measured, and are compared to relevant data reported in the literature. In addition, as a part of this study, theoretical TICS were calculated using the Binary-encounter Bethe (BEB) and independent atom model with screening corrected additivity rule (IAM - SCAR) methods. Good agreement between current measured and calculated TICSs and corresponding earlier results was typically found

Electron impact ionization of 1-propanol

10 pags., 5 figs., 3 tabs.Experimental measurements of the cations created in electron impact ionization have been undertaken for the primary isomer of propanol using a Hidden Quadrupole Mass Spectrometer (EPIC 300), with a mass resolution of 1 amu. The mass spectra recorded at an incident electron energy of 70 eV reveals the relative probability of forming 50 different cations, by either direct ionization or dissociative ionization. Individual partial ionization cross sections (PICS) for 31 different cations were measured for the first time in this work, for the incident electron energy range from 10 to 100 eV. Also, appearance energies (AEs) and Wannier exponents for the 16 most intense cations formed in electron collisions with 1-propanol are reported. Where possible, those results are compared to those from an earlier investigation. Total Ionization Cross Sections (TICS) were also obtained from the sum of the measured PICS, for nearly all cations measured, and are compared to relevant data reported in the literature. In addition, as a part of this study, theoretical TICS were calculated using the Binary-encounter Bethe (BEB) and independent atom model with screening corrected additivity rule (IAM–SCAR) methods. Good agreement between current measured and calculated TICSs and corresponding earlier results was typically found.M.C.A.L. acknowledges financial support from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq),Fundacão de Amparo à Pesquisa do Estado de Minas Gerais(FAPEMIG) and FINEP (under project CT-Infra), while M.J.B. thanks CNPq for his “Special Visiting Professor” award. K.L.N. thanks CNPq for an “Attracting Young Talent Grant” under the “Science WithoutBorders” program. Some financial assistance from the Australian Research Council is also noted. Finally, S. Ghosh acknowledges forhis grant from PNPD/CAPES while G. Garcia thanks the Spanish Ministerio de Economia, Industria y Competitividad for his projectgrant FIS 2016 −80440 and the EU project FP7-ITN – ARGENT –608163.Peer Reviewe