Effect of collective response on electron capture and excitation in collisions of highly charged ions with fullerenes.
Projectile deexcitation Lyman x-ray emission following electron capture and K excitation has been studied in collisions of bare and Li-like sulphur ions (of energy 110 MeV) with fullerenes (C(60)/C(70)) and different gaseous targets. The intensity ratios of different Lyman x-ray lines in collisions with fullerenes are found to be substantially lower than those for the gas targets, both for capture and excitation. This has been explained in terms of a model based on "solidlike" effect, namely, wakefield induced stark mixing of the excited states populated via electron capture or K excitation: a collective phenomenon of plasmon excitation in the fullerenes under the influence of heavy, highly charged ions.
Kadhane
U
U
Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai-400005, India.
Misra
D
D
Singh
Y P
YP
Tribedi
Lokesh C
LC