Inverse Compton scattering x-ray source from laser electron accelerator in pure nitrogen with 15 TW laser pulses
Inverse Compton scattering x-ray source from laser electron accelerator in pure nitrogen with 15 TW laser pulses
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来自纯氮气中的激光电子加速器的逆康普顿散射 X 射线源，具有 15 TW 激光脉冲
DOI：
10.1088/1361-6587/aaebe3
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发表时间：
2018-11
影响因子：
2.2
通讯作者：
Chen Liming
中科院分区：
文献类型：
--
作者：
Zhu Changqing;Wang Jinguang;Feng Jie;Li Yifei;Li Dazhang;Li Minghua;He Yuhang;Ma Jinglong;Tan Junhao;Zhang Baolong;Yan Wenchao;Chen Liming
利用15 TW激光脉冲，采用激光驱动的纯氮等离子体加速器和等离子体镜（PM）自同步组合技术，系统地研究了桌面逆康普顿散射（ICS）硬X射线源。在纯氮介质和电离诱导注入方案中，激光尾流场加速（LWFA）在较低的激光强度a0 ~ 2和等离子体密度ne ~ 8 × 1018 cm−3下进行，使得光束轮廓演化较弱，能量传输率高达95%。我们发现电子束的质量对激光脉冲在气体射流尾部附近的聚焦位置不敏感，因此可以将焦点放置在PM附近。通过将加速电子束团与反射激光束的碰撞点调谐到光学焦斑上，大大提高了ICS。最终，产生的ICS X射线的产率为4.5 × 107。超过200 keV的光子数约为1.2 × 107。实验结果表明，仅用10太瓦激光器就可以实现数百keV量级的稳定高产额X射线源。这降低了获得高能飞秒X射线的阈值。
Using 15 TW laser pulses, we present a systematic investigation on tabletop inverse Compton scattering (ICS) hard x-ray source based on the self-synchronized combination of laser-driven pure nitrogen plasma accelerator and plasma mirror (PM). In the scheme of pure nitrogen medium and ionization induced injection, the laser wake-field acceleration (LWFA) is performed at a lower laser intensity of a0 ∼ 2 and a lower plasma density of ne ∼ 8 × 1018 cm−3, which lead to the weak evolution of beam profile and high energy transmission rate of 95%. We found the quality of electron beam is insensitive to the focus position of the laser pulse near the tail of gas jet, so it becomes possible to place the focus close to the PM. Tunning the collision point of accelerated electron bunch and reflected laser beam to the optical focal spot, ICS is dramatically increased. Ultimately, the produced ICS x-rays have the yield of 4.5 × 107. And the photon number exceeding 200 keV is about 1.2 × 107. Demonstrated by our results, stable and high yield of x-ray source in hundreds of keV range could be achieved via all-optical ICS driven by only ten terawatt lasers. This reduces the threshold of obtaining high-energy femtosecond x-rays.
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激光等离子体加速器中电离注入电子产生的共振增强电子感应加速器硬 X 射线
影响因子：
4.6
作者：
Huang K;Li YF;Li DZ;Chen LM;Tao MZ;Ma Y;Zhao JR;Li MH;Chen M;Mirzaie M;Hafz N;Sokollik T;Sheng ZM;Zhang J
通讯作者：
Zhang J
DOI：
10.1103/physreve.52.5425
发表时间：
1995-11
期刊：
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
影响因子：
--
作者：
Ride;Esarey;Baine
通讯作者：
Ride;Esarey;Baine
DOI：
10.1007/s00340-007-2802-8
发表时间：
2007-10
期刊：
Applied Physics B
影响因子：
--
作者：
A. Maksimchuk;S. Reed;N. Naumova;V. Chvykov;B. Hou;G. Kalintchenko;T. Matsuoka;J. Nees;P. Rousseau;G. Mourou;V. Yanovsky
通讯作者：
A. Maksimchuk;S. Reed;N. Naumova;V. Chvykov;B. Hou;G. Kalintchenko;T. Matsuoka;J. Nees;P. Rousseau;G. Mourou;V. Yanovsky
DOI：
10.1016/0031-9163(63)90351-2
发表时间：
1963-01-01
期刊：
PHYSICS LETTERS
影响因子：
--
作者：
ARUTYUNIAN, FR;TUMANIAN, VA
通讯作者：
TUMANIAN, VA
影响因子：
8.6
作者：
Pak, A.;Marsh, K. A.;Joshi, C.
通讯作者：
Joshi, C.