Observation of Intense Bursts of Terahertz Synchrotron Radiation at UVSOR-II
Observation of Intense Bursts of Terahertz Synchrotron Radiation at UVSOR-II
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UVSOR-II 太赫兹同步加速器辐射强爆发的观测
DOI：
10.1143/jjap.44.l1131
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发表时间：
2005
影响因子：
1.5
通讯作者：
Toshiharu Takahashi
中科院分区：
文献类型：
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作者：
Y. Takashima;M. Katoh;M. Hosaka;A. Mochihashi;S. Kimura;Toshiharu Takahashi
我们在单束模式下运行的 UVSOR-II 电子存储环上检测到非常强烈的太赫兹同步辐射。使用液氦冷却 InSb 热电子测辐射热计在 0.2 至 3.0 mm 的波长范围内观察到爆发。突发的典型持续时间和间隔分别约为 200 µs 和 10-15 ms。每个突发显示大约 30 µs 的准周期结构。爆发的峰值强度比相同波长区域的普通同步加速器辐射的峰值强度大约高10000倍。极高的强度强烈表明爆发是相干同步加速器辐射，尽管辐射波长比电子束长度短得多。
We have detected very intense bursts of terahertz synchrotron radiation at the UVSOR-II electron storage ring operated in single bunch mode. The bursts were observed in the wavelength range from 0.2 to 3.0 mm by using a liquid-helium-cooled InSb hot-electron bolometer. The typical duration and interval of the bursts were about 200 µs and 10–15 ms, respectively. Each burst shows the quasi-periodic structure of about 30 µs. The peak intensity of the bursts was about 10000 times larger than that of ordinary synchrotron radiation in the same wavelength region. The extremely high intensity strongly suggests that the bursts are coherent synchrotron radiation, although the radiation wavelength was much shorter than the electron bunch length.