To describe the role of electronic energy loss (dE/dX)e for chemical modification of polyimide (PI), multi layer stacks (corresponding to different dE/dX) were irradiated by different swift heavy ions (1.158 GeV ^56Fe...To describe the role of electronic energy loss (dE/dX)e for chemical modification of polyimide (PI), multi layer stacks (corresponding to different dE/dX) were irradiated by different swift heavy ions (1.158 GeV ^56Fe and 1.755 GeV ^136Xe) under vacuum and at room temperature at the irradiation terminal of HIRFL. Chemical changes of modified PI films were studied by Fourier transformed infrared (FTIR) spectra measured with a Perkin Elmer Soectrum GX in a transmission mode.展开更多
Polycarbonate foil (Makrofol KG, PC) stacks were irradiated with various swift heavy ions (1.158 GeV 56Fe, 1.755 GeV 136Xe and 2.636 GeV 238U) in a very wide electronic stopping power range (from 1.9 to 17.1 keV/nm) a...Polycarbonate foil (Makrofol KG, PC) stacks were irradiated with various swift heavy ions (1.158 GeV 56Fe, 1.755 GeV 136Xe and 2.636 GeV 238U) in a very wide electronic stopping power range (from 1.9 to 17.1 keV/nm) and the fluence range from 1×1010 to 3×1012ions/cm2. The amorphous processes and chemical degradation in the irradiated PC were studied by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy measurements. The results were explained by the thermal spike model.展开更多
文摘To describe the role of electronic energy loss (dE/dX)e for chemical modification of polyimide (PI), multi layer stacks (corresponding to different dE/dX) were irradiated by different swift heavy ions (1.158 GeV ^56Fe and 1.755 GeV ^136Xe) under vacuum and at room temperature at the irradiation terminal of HIRFL. Chemical changes of modified PI films were studied by Fourier transformed infrared (FTIR) spectra measured with a Perkin Elmer Soectrum GX in a transmission mode.
文摘Polycarbonate foil (Makrofol KG, PC) stacks were irradiated with various swift heavy ions (1.158 GeV 56Fe, 1.755 GeV 136Xe and 2.636 GeV 238U) in a very wide electronic stopping power range (from 1.9 to 17.1 keV/nm) and the fluence range from 1×1010 to 3×1012ions/cm2. The amorphous processes and chemical degradation in the irradiated PC were studied by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy measurements. The results were explained by the thermal spike model.