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GUO Weifeng(郭卫锋), HAO Yingping(郝颖萍), CHENG Bin(成斌), LIU Jiandang(刘建党), DU Huaijiang(杜淮江), WENG Huimin(翁惠民), YE Bangjiao(叶邦角). Coincidence Doppler Broadening Study in Carbon Nanotubes[J]. Plasma Science and Technology, 2012, 14(5): 431-433. DOI: 10.1088/1009-0630/14/5/23
Citation: GUO Weifeng(郭卫锋), HAO Yingping(郝颖萍), CHENG Bin(成斌), LIU Jiandang(刘建党), DU Huaijiang(杜淮江), WENG Huimin(翁惠民), YE Bangjiao(叶邦角). Coincidence Doppler Broadening Study in Carbon Nanotubes[J]. Plasma Science and Technology, 2012, 14(5): 431-433. DOI: 10.1088/1009-0630/14/5/23

Coincidence Doppler Broadening Study in Carbon Nanotubes

Funds: Supported by National Natural Science Foundation of China ( No. 10835006)
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  • Received Date: May 16, 2011
  • Coincidence Doppler broadening measurements of positron annihilation for multi-walled carbon nanotubes, double-walled carbon nanotubes, single-walled carbon nanotubes and graphite were performed. The ratio curves of the Doppler broadening for these samples to silicon were obtained. It is shown that there are distinct peaks at the position of 10×10-3m0c for both carbon nanotubes and graphite, however the amplitudes of the peaks are not the same. We have the opinion that these peaks arise from the annihilation of positron with the 2s and 2p electron of carbon element.
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