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Charge-Transfer Induced Dissociation in the H+(H2O)3-Ar collisions observed with the COINTOF mass spectrometer

F. Berthias 1 H. Abdoul-Carime 2 L. Feketeovà 2 R. Filliol 3 B. Farizon 2 M. Farizon 2
1 IPM
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
3 Accelerateurs
IPNL - Institut de Physique Nucléaire de Lyon
Abstract : Electron-capture in collisions of singly charged protonated water cluster H+(H2O)3, ions with Ar atoms is studied at the impact energy of 8 keV in the frame of the COrrelated Ion and Neutral fragments Time-Of-Flight, COINTOF, technique. In contrast to methods based only on the detection of the charged fragments, dissociation induced by collisional-excitation and electron-capture induced dissociation can be simultaneously recorded in the present set-up. Time of flight measurement of both neutral and corresponding charged species resulting from the charge-exchange process leads to the direct observation of the dissociation of the neutralized protonated water cluster. Thus, the present COINTOF method provides new valuable insights into the collision processes through the detection of produced neutral fragments. Moreover, it opens new possibilities to measure kinetic energy release also in the dissociation of the produced neutrals, which is our future endeavour in the development of the presented COINTOF set up.
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Submitted on : Tuesday, June 10, 2014 - 10:21:31 AM
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F. Berthias, H. Abdoul-Carime, L. Feketeovà, R. Filliol, B. Farizon, et al.. Charge-Transfer Induced Dissociation in the H+(H2O)3-Ar collisions observed with the COINTOF mass spectrometer. The European Physical Journal D : Atomic, molecular, optical and plasma physics, EDP Sciences, 2014, 68, pp.148. ⟨10.1140/epjd/e2014-40833-0⟩. ⟨in2p3-01003196⟩

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