Electronic Energy Loss Effects in Polystyrene Irradiated with High Energy Argon Ions

ZHU Zhi-Yong; JIN Yun-Fan; LIU Chang-Long; SUN You-Mei; WANG Yan-Bin; HOU Ming-Dong; CHEN Xiao-Xi; WANG Zhi-Guang; ZHANG Chong-Hong; LIU Jie; LI Bao-Quan

Chinese Physics C> 2001, Vol. 25> Issue(1) : 74-78

Electronic Energy Loss Effects in Polystyrene Irradiated with High Energy Argon Ions

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract：
Stacked polystyrene films of about 53μm in thickness were irradiated with 1.4GeV argon ions at room temperature and in vacuum. The radiation induced Chemical changes of each film were studied by the Fourier-transform infrared (FT-IR) and ultraviolet/visible (UV/VIS) spectroscopies. It is found that the material is seriously degraded after irradiation and the chemical modifications depend strongly on electronic energy loss. Significant degradation of the material occurs above about 0.77keV/nm at the dose of 5.5×10¹² ions/cm² corresponding to an energy deposition of 6. 4MGy. The main chains of PS as well as the phenyl ring are destroyed in the track core simultaneously. Damage cross sections Of alert 29urn2 are found for phenyl ring and the -CH2- group. Aldynes are produced above an energy loss of 0.77keV/nm .

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ZHU Zhi-Yong, JIN Yun-Fan, LIU Chang-Long, SUN You-Mei, WANG Yan-Bin, HOU Ming-Dong, CHEN Xiao-Xi, WANG Zhi-Guang, ZHANG Chong-Hong, LIU Jie and LI Bao-Quan. Electronic Energy Loss Effects in Polystyrene Irradiated with High Energy Argon Ions[J]. Chinese Physics C, 2001, 25(1): 74-78.

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Received: 1999-12-12
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Electronic Energy Loss Effects in Polystyrene Irradiated with High Energy Argon Ions

Corresponding author: ZHU Zhi-Yong,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 1999-12-12

Accepted Date: 1900-01-01

Available Online: 2001-01-05

Abstract: Stacked polystyrene films of about 53μm in thickness were irradiated with 1.4GeV argon ions at room temperature and in vacuum. The radiation induced Chemical changes of each film were studied by the Fourier-transform infrared (FT-IR) and ultraviolet/visible (UV/VIS) spectroscopies. It is found that the material is seriously degraded after irradiation and the chemical modifications depend strongly on electronic energy loss. Significant degradation of the material occurs above about 0.77keV/nm at the dose of 5.5×10¹² ions/cm² corresponding to an energy deposition of 6. 4MGy. The main chains of PS as well as the phenyl ring are destroyed in the track core simultaneously. Damage cross sections Of alert 29urn2 are found for phenyl ring and the -CH2- group. Aldynes are produced above an energy loss of 0.77keV/nm .

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Electronic Energy Loss Effects in Polystyrene Irradiated with High Energy Argon Ions

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