Measurement of coherent Cherenkov radiation from an intense beam of a picosecond electron bunch.
Measurement of coherent Cherenkov radiation from an intense beam of a picosecond electron bunch.
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皮秒电子束强束相干切伦科夫辐射的测量。
DOI：
10.1103/physrevlett.66.1967
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发表时间：
1991
影响因子：
8.6
通讯作者：
Tsumori
中科院分区：
文献类型：
--
作者：
Ohkuma;Okuda;Tsumori
从科学与工业研究院的直线加速器的大电流30 MeV电子束(2x 10n电子/束)在空气中发射的高强度切伦科夫辐射(CR)在0.4至3毫米的波长处被观测到。辐射从光束轴以38mrad的角度发射，并有一些扩散。测量到的辐射强度大约是普通CR计算的10倍。这种增强归因于相对较短的电子束发射的CR中出现的相干性。
High-intensity Cherenkov radiation (CR), emitted in air from a high-current 30-MeV electron bunch (2x 10 n electrons/bunch) of the linear accelerator at the Institute of Scientific and Industrial Research, was observed at wavelengths from 0.4 to 3 mm. The radiation was emitted at an angle of 38 mrad, with some spread, from the beam axis. The radiation measured was about 10 times as intense as that calculated for ordinary CR. Such enhancement is attributed to the coherence which appears in CR emitted from electron bunches of relatively short length.