Citation
Rivera de Mena, Antonio and Olivares, J. and García, G. and Agullo Lopez, Fernando
(2012).
Swift heavy ion damage to sodium chloride: synergy between excitation and thermal spikes.
"Journal of Physics: Condensed Matter", v. 24
(n. 8);
pp..
ISSN 1361-648X.
https://doi.org/10.1088/0953-8984/24/8/085401.
Abstract
Systematic data on the effect of irradiation with swift ions (Zn at 735 MeV and Xe at 929 MeV) on NaCl single crystals have been analysed in terms of a synergetic two-spike approach (thermal and excitation spikes). The coupling of the two spikes, simultaneously generated by the irradiation, contributes to the operation of a non-radiative exciton decay model as proposed for purely ionization damage. Using this scheme, we have accounted for the π-emission yield of self-trapped excitons and its temperature dependence under ion-beam irradiation. Moreover, the initial production rates of F-centre growth have also been reasonably simulated for irradiation at low temperatures ( < 100 K), where colour centre annealing and aggregation can be neglected.