期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到2篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Angular response of ‘pin-hole' imaging structure measured by collimated β source 认领 引用 被引量：10
1
作者 ZOU Hong LUO Lin +7 位作者 LI ChenFang JIA XiangHong XU Feng CHEN HongFei CHEN Jiang SHI WeiHong YU XiangQian ZOU JiQing 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第11期2675-2680,共6页
The pitch-angle distribution of energetic particles is important for space physics studies on magnetic storm and particle acceleration.A‘pin-hole’imaging structure is built with the‘pin-hole’technique and a positi... The pitch-angle distribution of energetic particles is important for space physics studies on magnetic storm and particle acceleration.A‘pin-hole’imaging structure is built with the‘pin-hole’technique and a position sensitive detector,which can be used to measure the pitch angle distribution of energetic particles.To calibrate the angular response of the‘pin-hole’imaging structure,special experiment facilities are needed,such as the particle accelerator with special design.The features of this kind of particle accelerator are:1)The energy range of the outgoing particles should be mid-energy particles(tens keV to several hundred keV);2)the particle flux should be consistent in time-scale;3)the directions of the outgoing particles should be the same and 4)the particle number within the spot should be low enough.In this paper,a method to calibrate the angular response of the‘pin-hole’imaging structure by the90Sr/90Y β source with a collimator is introduced and simulated by Geant4 software.The result of the calibration with the collimated β source is in accord with the Geant4 simulations,which verifies the validity of this method. 展开更多
关键词 ＇pin-hole＇ imaging Energetic particle Pitch-angle distribution Angular response β source Geant4 simulation
暂未订购 下载PDF
Angular selection based on photonic crystals as the pseudo-local effective medium 认领 引用
2
作者 TONGTONG SONG CHANGHUI SHEN +2 位作者 GUANGYAO XU RUNQI JIA YUN LAI 《Photonics Research》 SCIE EI CAS CSCD 2026年第6期2541-2552,共12页
Precise control over the angular response of light is essential for advanced photonic devices.Here,we develop a constitutive-parameters-based framework for customizable angular selection.We introduce a pseudo-local ef... Precise control over the angular response of light is essential for advanced photonic devices.Here,we develop a constitutive-parameters-based framework for customizable angular selection.We introduce a pseudo-local effective medium theory,leveraging Brillouin zone folding in photonic crystal supercells,to effectively realize the required parameters for a designated incident crystal face.At the operating frequency,simulations and microwave experiments demonstrate that the designed photonic crystal achieves sharp angular selection from near-total transmission(97%)to near-perfect reflection within an angular transition bandwidth of~3°.Additionally,by integrating a hyperbolic medium with an anisotropic medium,we realize in simulation an angular bandpass filter centered at 30°with a near 1°full width at half-maximum.This work provides a quantitative design methodology for angular-selective photonic crystals and metamaterials,paving the way for applications such as antenna sidelobe suppression,solar energy harvesting,and privacy displays. 展开更多
关键词 advanced photonic devicesherewe microwave experiments photonic crystal supercellsto angular selectionwe photonic crystal angular selection brillouin zone folding control angular response light
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈