节点文献
C2+离子轰击聚乙烯合成C26晶体
Synthesis of C26 Crystallite Polyethylene by C2+ Ion Bombardment
【摘要】 C2+离子轰击聚乙烯合成了由C26分子六角形密堆积组成的一种新碳晶体对高分辨透射电子显微镜、电子衍射和飞行时间质谱的研究证实,构成晶体的C26分子具有笼状富勒烯结构.
【Abstract】 A new form solid Carbon has been synthesized consisting of a hexagonal close packing of a26 molecules under energetic C26 ion 2. 4 MeV bombardment of ultra high molecular weight polyethylene. The beam current was about 150 mA and the total dose was 1 X 1016 ions cm-2. The residual gas pressure in the irradiation chamber was 1. 3 X 10 -4 Pa during bombardment High-resolu- tion transmission electron microscopy, electron diffraction, and time-of-flight mass spectroscopy studies of the molecular packing confirm that the C26 molecules have the Caged fullerene structure.
【关键词】 C2+离子轰击;
聚乙烯;
透射电子显微镜;
电子衍射;
飞行时间质谱;
【Key words】 ion (C2+) bombardment; polyethylene; transmission electron microscopy; electron diffraction; TOF-mass spectroscopy;
【Key words】 ion (C2+) bombardment; polyethylene; transmission electron microscopy; electron diffraction; TOF-mass spectroscopy;
【基金】 国家自然科学重点基金!(19735004);中国科学院基础性研究重点基金!(952-JI-414);北京大学重离子研究所部分经
- 【文献出处】 高能物理与核物理 ,High Energh Physics and Nuclear Physics , 编辑部邮箱 ,2001年01期
- 【分类号】O571
- 【被引频次】3
- 【下载频次】38