铁催化高压歧化生成的单壁碳纳米管氢等离子体的微波损耗机理  

Investigation on microwave attenuation mechanisms of hydrogen plasma in HiPco single wall carbon nanotubes

作　　者：郭燕春[1] 彭志华[1] 陈铀[1] 贾鹏[1] 彭延峰[1] 宁艳桃[1] 郭萍[1] 

机构地区：[1]南华大学数理学院,衡阳421001

出　　处：《南京信息工程大学学报（自然科学版）》2012年第4期376-379,共4页Journal of Nanjing University of Information Science & Technology（Natural Science Edition）

基　　金：南华大学研究生科研创新项目(2011XCX04;2010XCX02);湖南省科学研究项目(2010FJ4092);湖南省自然科学省市联合基金(重点)(10JJ8005)

摘　　要：运用双流体理论,在同时考虑了单壁碳纳米管中氢等离子体的电子碰撞吸收和氢离子碰撞吸收的基础上,理论推导出了铁催化高压歧化生成的单壁碳纳米管中氢等离子体的微波衰减系数公式,数值计算了0.2～18GHz频段的微波衰减系数.计算结果表明,铁催化高压歧化生成的单壁碳纳米管中氢等离子体对2.45GHz的微波产生强烈损耗.理论值与实验数据相吻合.Using double-fluid theory, a microwave attenuation coefficient of hydrogen plasma in Single Wall Carbon Nanotubes （SCNTs）, which were grown by iron-catalyzed high-pressure disproportionation （HiPeo）, is deduced theoretically. In this paper, both the electron collision absorption and ion collision absorption of hydrogen plasma in SCNTs are considered in detail. Under different conditions, microwave attenuation coefficient is calculated theoreti- cally in the frequency range of 0. 2 - 18 GHz. The simulation results show that hydrogen plasma in HiPco SCNTs ex- hibits strong microwave （ around 2.45 GHz） absorption. The numerical results are in good agreement with the ex- perimental data.

关 键 词：单壁碳纳米管 氢等离子体 复介电常数 微波损耗 

分 类 号：TM25[一般工业技术—材料科学与工程]