Chemical modifications induced in swift heavy ion-irradiated polymers

Natacha Betz

doi:10.1117/12.321948

17 September 1998 Chemical modifications induced in swift heavy ion-irradiated polymers

Natacha Betz

Proceedings Volume 3413, Materials Modification by Ion Irradiation; (1998) https://doi.org/10.1117/12.321948
Event: Lasers and Materials in Industry and Opto-Contact Workshop, 1998, Quebec, Canada

Abstract

Swift heavy ions (SHI) have velocities around or above the velocity of K-shell electrons, which corresponds to energies ranging from a few MeV/amu to about 100 MeV/amu. They interact with matter mainly by inelastic collision processes leading to ionization of the target atoms and excitations of the target electrons: Nearly all of the SHI energy is lost in the electronic stopping power (dE/dx)_e range. Most of the work concerning SHI effects in materials concern biological matter and materials insensitive to radiation damage processes such as metals or metallic oxides. On the contrary, few studies have been published concerning high (dE/dx)_e effects in radiolysis sensitive materials such as polymers. This contribution deals with the chemical effects induced by SHI in polymers, but also other fluorinated polymers, polyethylene, polystyrene. Several kind of defects are created. The influence of irradiation parameters is presented. Different evolutions when (dE/dx)_e increases is observed. Some defects are specific of SHI and thus appear only at high (dE/dx)_e. Some see the yield of creation increased on high (dX/dx)_e while others are so easily formed that increasing the (dE/dx)_e does not affect their yield.

Citation Download Citation

Natacha Betz "Chemical modifications induced in swift heavy ion-irradiated polymers", Proc. SPIE 3413, Materials Modification by Ion Irradiation, (17 September 1998); https://doi.org/10.1117/12.321948

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