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    • A crossed-beam experiment for electron impact ionization and dissociation of molecular ions: its application to CO+Peer reviewedClosed access 

      2006, LECOINTRE, Julien; Belic, D. S.; Cherkani-Hassani, H.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      A crossed electron–ion beam experimental set-up has been upgraded for the study of electron impact ionization and dissociation of molecular ions by means of ionic product detection. Both the experimental set-up and the data analysis procedures are described in detail for the estimation of (i) absolute cross sections, (ii) kinetic energy release distributions (KERD) and (iii) anisotropies of angular ...

    • Electron-impact dissociation and ionization of OH+ and OD+ ionsPeer reviewedClosed access 

      2012, LECOINTRE, Julien; Belic, D. S.; Jureta, J. J.; Cherkani-Hassani, H.; Cherkani-Hassani, S.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross sections for electron impact ionization and dissociation of OH+ and OD+ leading to the formation of the OH2+, O+, O2+, O3+ and D+ ions have been measured by applying the animated electron-ion beam method in the energy range from the respective reaction thresholds up to 2.5 keV. The maximum of the single ionization cross section is found to be (0.95±0.02) × 10−19 cm2 at 155 eV. ...

    • Electron-impact ionization and dissociation of C2D+Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Cherkani-Hassani, S.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross sections for electron-impact single ionization, dissociative excitation and dissociative ionization of the ethynyl radical ion (C2D+) have been measured for electron energies ranging from the corresponding reaction thresholds to 2.5 keV. The animated crossed electron-ion beam experiment is used and results have been obtained for the production of C2D2+, C2+, C+2, CD+, C+ and D+. The ...

    • I. Electron-impact ionization and dissociation of C2H +2 and C2D +2Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Cherkani-Hassani, S.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact ionization and dissociation of C2H +2 and C2D +2 have been measured for electron energies ranging from the corresponding thresholds up to 2.5 keV. The animated crossed beams experiment has been used. Light as well as heavy fragment ions that are produced from the ionization and the dissociation of the target have been detected for the first time. The maximum ...

    • II. Electron-impact dissociative excitation of C2H +2 and C2D +2Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact dissociative excitation of C2H +2 and C2D +2 to C2D+, CH+, C+, C +2, H+ and CH +2 singly-charged fragments have been estimated. The animated crossed-beams method is applied in the energy range from the corresponding reaction threshold up to 2.5 keV. Individual contributions for dissociative excitation are determined from the analysis of the total absolute ...

    • III. Electron-impact dissociative ionization of C2H +2 and C2D +2Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact dissociative ionization of C2 H +2 and C2 D +2 to CH+, C+, C +2 , H+, CH +2 and C2D+ fragments are determined for electron energies ranging from the corresponding threshold to 2.5 keV. Results obtained in a crossed beams experiment are analyzed to estimate the contribution of dissociative ionization to each fragment formation. The dissociative ionization ...