Damage  Mechanism of  PET  Irradiated  by  25  MeV/u  Kr  Ions

PENG  Shu-fu; SUN  You-mei; #; LUO  Jie; CHANG  Hai-long; LIU Jie; HOU  Ming-dong; DUAN  Jing-lai; YAO  Hui-jun; MO Dan; ZHANG  Ling; YIN  Jin-ming; CHEN  Yan-feng; ZHAI  Peng-fei; CAO Dian liang

doi:10.11804/NuclPhysRev.27.01.097

PENG Shu-fu, SUN You-mei, #, LUO Jie, CHANG Hai-long, LIU Jie, HOU Ming-dong, DUAN Jing-lai, YAO Hui-jun, MO Dan, ZHANG Ling, YIN Jin-ming, CHEN Yan-feng, ZHAI Peng-fei, CAO Dian liang. Damage Mechanism of PET Irradiated by 25 MeV/u Kr Ions[J]. Nuclear Physics Review, 2010, 27(1): 97-101. DOI: 10.11804/NuclPhysRev.27.01.097

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Damage Mechanism of PET Irradiated by 25 MeV/u Kr Ions

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At room temperature， polyethylene terephthalate(PET) foil stacks were irradiated by 25 MeV/u Kr ions in the electronic stopping power range(3.3--7.66 keV/nm) and the fluence range from 5×10¹¹ to 3×10¹² ions/cm². The behaviour of the main function groups with fluence and electronic stopping power were studied by using Fouriertransforminfrared(FTIR) spectroscopy， the degradation of the function group was investigated with the Lorentz fitting subtracted baseline. The amorphous processes in the latent tracks of PET were studied by Xray diffraction(XRD) measurements. The Kr ion induced degradation crosssection and amorphisation crosssections(radii) for different electronic energy loss were acquired from the experimental data(FTIR and XRD) by exponential decay function respectively. 

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Damage Mechanism of PET Irradiated by 25 MeV/u Kr Ions

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