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Julien LECOINTRE
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Absolute cross sections and kinetic energy release distributions for electron impact ionization and dissociation of CD+
2007, LECOINTRE, Julien; Cherkani-Hassani, S.; Belic, D. S.; Jureta, J. J.; Becker, K.; Deutsch, H.; Märk, T. D.; Probst, M.; Janev, R. K.,
- HENALLUX
,
- Article scientifique
Article scientifique
Absolute cross sections for electron impact dissociative excitation and ionization of CD+ leading to the formation of ionic products (D+, C+, C2+ and C3+) are reported in the energy range from their respective thresholds to 2.5 keV. Around the maximum, cross sections are found to be (10.5 ± 1.0) × 10−17 cm2, (20.6 ± 3.5) × 10−17 cm2, (1.20 ± 0.11) × 10−17 cm2 and (8.2 ± 1.5) × 10−20 cm2 for D+, C+, ...
Water-molecule dissociation by proton and hydrogen impact
2007, LECOINTRE, Julien; Luna, H.; de Barros, A. L. F.; Wyer, J. A.; Scully, S. W. J.; Garcia, P. M. Y.; Sigaud, G. M.; Santos, A. C. F.; Senthil, V.; Shah, M. B.; Latimer, C. J.; Montenegro, E. C.,
- HENALLUX
,
- Article scientifique
Article scientifique
Time-of-flight-based mass analysis of charged water fragments have been used to measure the dissociative
and the nondissociative reaction pathways of water formed during collisions with 15 to 100 keV and
500 to 3500 keV H+ projectiles and with 8 to 100 keV H0 projectiles. The fragmentation pathways resulting
from the ionization and the electron capture collisions with the incident H+ and H0 ...
Water Fragmentation and Energy Loss by Carbon Ions at the Distal Region of the Bragg Peak
2007, LECOINTRE, Julien; Montenegro, E. C.; Shah, M. B.; Luna, H.; Scully, S. W. J.; de Barros, A. L. F.; Wyer, J. A.,
- HENALLUX
,
- Article scientifique
Article scientifique
Time-of-flight mass spectrometry was used to investigate fragmentation and energy transfer processes in water by C ions at the distal part of the Bragg peak. Measurements of the positive ion fragments from ionization, electron capture, electron loss, transfer-loss and loss-ionization channels have allowed us for the first time (a) to obtain a quantitative determination of the energy lost by C ions ...
Ionisation et dissociation par impact électronique d'ions moléculaires d'intérêt atmosphérique et thermonucléaire
Livre/Ouvrage ou monographie
Dans les milieux ionisés existe un grand nombre d'espèces chimiques. Beaucoup sont en quantité minoritaire mais jouent pourtant, par leur grande réactivité, un rôle essentiel dans les processus de transformation chimique. Cette étude s'intéresse à la structure et à la dynamique des ions moléculaires, ainsi qu'aux collisions réactives pour des systèmes intervenant dans les atmosphères planétaires et ...
A crossed-beam experiment for electron impact ionization and dissociation of molecular ions: its application to CO+
2006, LECOINTRE, Julien; Belic, D. S.; Cherkani-Hassani, H.; Jureta, J. J.; Defrance, P.,
- HENALLUX
,
- Article scientifique
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 ...