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Article Dans Une Revue Physica Scripta Année : 2013

Fragmentation of anthracene induced by collisions with 40 keV Ar 8+ ions

Résumé

We report on the fragmentation of anthracene molecular ions C14H10r+ as a function of the parent ion initial charge r (= 1–4). Neutral anthracene molecules in the gas phase were ionized and excited in collisions with Ar8+ ions at 40 keV and the mass-to-charge spectra of the parent ions C14H10r+ (1 ≤ r ≤ 4) were obtained. Stable molecular ions C14H10r+ (1 ≤ r ≤ 3) are observed. Branching ratios for the competitive evaporation (loss of neutral fragments) and fragmentation (charge separation) processes were measured for C14H102+ parent ions. For C14H103+ parent ions, the results indicate that fragmentation is the only dominant process and quasi-symmetric fission is observed.
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Dates et versions

hal-03054266 , version 1 (11-12-2020)

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Richard Brédy, C. Ortéga, M. Ji, Jérôme Bernard, L. Chen, et al.. Fragmentation of anthracene induced by collisions with 40 keV Ar 8+ ions. Physica Scripta, 2013, T156, pp.014042. ⟨10.1088/0031-8949/2013/T156/014042⟩. ⟨hal-03054266⟩
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