Characteristics of coherent diffraction terahertz radiation核技术：英文版论文
【题名】：Characteristics of coherent diffraction terahertz radiation核技术：英文版论文(Characteristics of coherent diffraction terahertz radiationHeJiShu：YingWenBanLunWen) 【关键词】：一致衍射辐射 太赫辐射源 SDUV-FEL 金属薄片 同步加速器 【keywords】：YiZhiYanSheFuShe TaiHeFuSheYuan SDUV-FEL JinShuBaoPian TongBuJiaSuQi 【作者】：LIUAi-Qin LIUGui-Min DAIZhi-Min      【来源】： 知识词典 【期刊名称】：核技术：英文版(HeJiShu：YingWenBan) 【国际标准刊号】：1001-8042        【国内统一刊号】：31-1559 【作者单位】：ShanghaiInstituteofAppliedPhysics,theChineseAcademyofSciences,Shanghai201800(ShanghaiInstituteofAppliedPhysics,theChineseAcademyofSciences,Shanghai201800) 【分类号】：TL544 O436.1      【页码】：-70-75      【出版年】：2005.2 【下载地址】：下载pdf全文         Coherent diffraction radiation (CDR), generated by relativistic femtosecond electron bunches passing through an aperture in a metallic foil, is becoming widely used as a high brightness, coherent, polarized, and broadband terahertz radiation source. It is one of the most promising technique for non-destructive beam diagnostics in accelerators. In this paper, how to produce CDR is studied by utilizing femtosecond electron bunches at wavelengths equal to or longer than the bunch length with the aperture size at the condition of α≤γλ(2π), which is provided by Shanghai Deep Ultraviolet-Free Electron Laser (SDUV-FEL) facility. General characteristics of CDR at SDUV-FEL are analyzed and numerically calculated. The results show that the radiance of this radiation within the frequency range from 0.2 up to 5 terahertz greatly exceeds that available from conventional black body radiation or synchrotron radiation.
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