一种基于石墨烯电场效应的软X射线探测器
|
摘要
针对脉冲星导航对软X射线探测的实际要求,研究分析了一种基于石墨烯电场效应的软X射线探测器的性能。通过理论计算,并利用COMSOL Multiphysics有限元仿真软件,给出了探测器时间分辨率和能量分辨率的估值公式。在5.9keV软X射线入射硅吸收层的情况下,时间分辨率的理论值可达7.2ns,能量分辨率的理论值约为90eV(1.5%)。结果表明,该探测器能够初步满足脉冲星软X射线的探测需求。
In view of the requirements of X-ray detection in pulsar-based navigation,the performance of a soft X-ray detector based on electric field effect of graphene is studied.The formula of time resolution and energy resolution of the detector is given by theoretical calculation and COMSOL Multiphysics simulation software.When the soft X-ray of 5.9 keV is incident on the silicon absorption layer,the theoretical value of the time resolution is about 7.2 ns and the theoretical value of the energy resolution is about 90 eV(1.5%).The results show that the detector can meet the basic requirement of X-ray detection in pulsar-based navigation.
In view of the requirements of X-ray detection in pulsar-based navigation,the performance of a soft X-ray detector based on electric field effect of graphene is studied.The formula of time resolution and energy resolution of the detector is given by theoretical calculation and COMSOL Multiphysics simulation software.When the soft X-ray of 5.9 keV is incident on the silicon absorption layer,the theoretical value of the time resolution is about 7.2 ns and the theoretical value of the energy resolution is about 90 eV(1.5%).The results show that the detector can meet the basic requirement of X-ray detection in pulsar-based navigation.
引文
[1]帅平,陈绍龙,吴一帆,等.X射线脉冲星导航原理[J].宇航学报,2007,28(6):1538-1543.Shuai Ping,Chen Shaolong,Wu Yifan,et al.Navigation principles using X-ray pulsars[J].J.of Astronautics,2007,28(6):1538-1543.
[2]盛立志.X射线脉冲星信号模拟源及探测器关键技术研究[D].西安:中国科学院研究生院(西安光学精密机械研究所),2013.Sheng Lizhi.Research of key technologies for X-ray pulsar simulation source and X-ray detectors[D].Xi’an:Xi’an Institute of Optics&Precision Mechanics,Graduate School of Chinese Academy of Sciences,2013.
[3]帅平,李明,陈绍龙,等.X射线脉冲星导航系统原理与方法[M].北京:中国宇航出版社,2009:11-12.Shuai Ping,Li Ming,Chen Shaolong,et al.Principles and Methods of X-ray Pulsar Navigation System[M].Beijing:China Astronautic Publishing House,2009:11-12.
[4]李连升,梅志武,吕政欣,等.X射线脉冲星导航探测技术发展综述[J].兵器装备工程学报,2017,38(5):1-9.Li Liansheng,Mei Zhiwu,Lv Zhengxin,et al.Overview of the development of X-ray pulsar navigation detection technology[J].J.of Ordnance Equipment Eng.,2017,38(5):1-9.
[5]全林,欧阳小平.脉冲星导航X射线探测技术综述[J].现代应用物理,2014,5(2):98-103.Quan Lin,OuYang Xiaoping.Review on development of X-ray detection technologies for pulsar navigation[J].Modern Appl.Phys.,2014,5(2):98-103.
[6]Wood K S,Kowalski M,Lovellette M N,et al.The unconventional stellar aspect(USA)experiment on ARGOS[C]//American Institute of Aeronautics and Astronautics(AIAA)Space Conf.and Expo.,2001:4664.
[7]吴耀军,帅平,张倩,等.一种基于石墨烯的脉冲星导航X射线探测器[J].宇航学报,2015,36(7):791-796.Wu Yaojun,Shuai Ping,Zhang Qian,et al.An X-ray detector based on graphene for pulsar navigation[J].J.of Astronautics,2015,36(7):791-796.
[8]Novoselov K S,Geim A K,Morozov S V,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306(5696):666-669.
[9]姜小强,刘智波,田建国.石墨烯光学性质及其应用研究进展[J].物理学进展,2017,37(1):22-36.Jiang Xiaoqiang,Liu Zhibo,Tian Jianguo.The optical properties of graphene and its application[J].Progress in Phys.,2017,37(1):22-36.
[10]朱宏伟,徐志平,谢丹,等.石墨烯—结构、制备方法与性能表征[M].北京:清华大学出版社,2011:114-120.Zhu Hongwei,Xu Zhiping,Xie Dan,et al.Graphene—Structure,Preparation and Characterization[M].Beijing:Tsinghua University Press,2011:114-120.
[11]Schedin F,Geim A K,Morozov S V,et al.Detection of individual gas molecules adsorbed on graphene[J].Nature Mater.,2007,6(9):652-655.
[12]汪晓莲,李澄,邵明,等.粒子探测技术[M].北京:中国科学技术大学出版社,2009:42-51.Wang Xiaolian,Li Cheng,Shao Ming,et al.Particle Detection Technology[M].Beijing:Press of University of Science and Technol.of China,2009:42-51.
[13]Albert C T,David T A,Eric M.X-ray Data Booklet[M].San Francisco:Center for X-ray Optics and Advanced Light Source,Lawrence Berkeley National Laboratory,2009.
[14]Henke B L,Gullikson E M,Davis J C.X-ray interactions:photoabsorption,scattering,transmission,and reflection at E=50~30 000eV,Z=1~92[J].Atomic Data and Nuclear Data Tables,1993,54(2):181-342.
[2]盛立志.X射线脉冲星信号模拟源及探测器关键技术研究[D].西安:中国科学院研究生院(西安光学精密机械研究所),2013.Sheng Lizhi.Research of key technologies for X-ray pulsar simulation source and X-ray detectors[D].Xi’an:Xi’an Institute of Optics&Precision Mechanics,Graduate School of Chinese Academy of Sciences,2013.
[3]帅平,李明,陈绍龙,等.X射线脉冲星导航系统原理与方法[M].北京:中国宇航出版社,2009:11-12.Shuai Ping,Li Ming,Chen Shaolong,et al.Principles and Methods of X-ray Pulsar Navigation System[M].Beijing:China Astronautic Publishing House,2009:11-12.
[4]李连升,梅志武,吕政欣,等.X射线脉冲星导航探测技术发展综述[J].兵器装备工程学报,2017,38(5):1-9.Li Liansheng,Mei Zhiwu,Lv Zhengxin,et al.Overview of the development of X-ray pulsar navigation detection technology[J].J.of Ordnance Equipment Eng.,2017,38(5):1-9.
[5]全林,欧阳小平.脉冲星导航X射线探测技术综述[J].现代应用物理,2014,5(2):98-103.Quan Lin,OuYang Xiaoping.Review on development of X-ray detection technologies for pulsar navigation[J].Modern Appl.Phys.,2014,5(2):98-103.
[6]Wood K S,Kowalski M,Lovellette M N,et al.The unconventional stellar aspect(USA)experiment on ARGOS[C]//American Institute of Aeronautics and Astronautics(AIAA)Space Conf.and Expo.,2001:4664.
[7]吴耀军,帅平,张倩,等.一种基于石墨烯的脉冲星导航X射线探测器[J].宇航学报,2015,36(7):791-796.Wu Yaojun,Shuai Ping,Zhang Qian,et al.An X-ray detector based on graphene for pulsar navigation[J].J.of Astronautics,2015,36(7):791-796.
[8]Novoselov K S,Geim A K,Morozov S V,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306(5696):666-669.
[9]姜小强,刘智波,田建国.石墨烯光学性质及其应用研究进展[J].物理学进展,2017,37(1):22-36.Jiang Xiaoqiang,Liu Zhibo,Tian Jianguo.The optical properties of graphene and its application[J].Progress in Phys.,2017,37(1):22-36.
[10]朱宏伟,徐志平,谢丹,等.石墨烯—结构、制备方法与性能表征[M].北京:清华大学出版社,2011:114-120.Zhu Hongwei,Xu Zhiping,Xie Dan,et al.Graphene—Structure,Preparation and Characterization[M].Beijing:Tsinghua University Press,2011:114-120.
[11]Schedin F,Geim A K,Morozov S V,et al.Detection of individual gas molecules adsorbed on graphene[J].Nature Mater.,2007,6(9):652-655.
[12]汪晓莲,李澄,邵明,等.粒子探测技术[M].北京:中国科学技术大学出版社,2009:42-51.Wang Xiaolian,Li Cheng,Shao Ming,et al.Particle Detection Technology[M].Beijing:Press of University of Science and Technol.of China,2009:42-51.
[13]Albert C T,David T A,Eric M.X-ray Data Booklet[M].San Francisco:Center for X-ray Optics and Advanced Light Source,Lawrence Berkeley National Laboratory,2009.
[14]Henke B L,Gullikson E M,Davis J C.X-ray interactions:photoabsorption,scattering,transmission,and reflection at E=50~30 000eV,Z=1~92[J].Atomic Data and Nuclear Data Tables,1993,54(2):181-342.