摘要
分析和数值计算了利用BFEL装置的 30MeV射频直线加速器提供的 4ps电子束团产生的宽带连续的强相干同步辐射 .由讨论可知 ,该束团可直接用以产生毫米波段相干同步辐射 ;通过压缩束团宽度至 1ps甚至亚ps,可获得宽带连续 (覆盖远红外—毫米波段 )的强相干辐射 .由于这种辐射位于相干辐射的珍稀或空白区 ,因而具有极高的应用价值 .在该波长范围内 ,相干辐射功率约为非相干辐射的 10 8— 10 9倍 .依赖于所选的波长范围和接收角 ,辐射功率在几百微瓦至毫瓦量级 .
Broad band continuous and high intensity coherent synchrotron radiation (SR) emitted from the 4ps electron bunches provided by the 30MeV linac of BFEL setup is analyzed and numerically calculated. High intensity coherent SRs in the mm wave region and in the far IR to mm wave region can be obtained respectively by directly using these bunches and by compressing their pulse widths to 1ps or sub ps. The later as a coherent source of radiation is of high value in applications because it is within the wavelength region where the coherent radiation source is lacked. The CSR power is enhanced by a factor of 10 8—10 9,approximately the number of electrons per bunch, compared to incoherent SR. The coherent SR power is within hundreds micro watts to milli watts dependent upon the chosen wavelength and gathering angle regions. Experimental designs on CSR generation and bunch length measurement are presented.
出处
《高能物理与核物理》
CSCD
北大核心
2000年第2期172-180,共9页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金!(198750 6 6 )
国家高技术激光技术领域资助项目
高能所所长基金&&
