Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Wan, Weishi"'
The x-ray vortex optical beam, distinguished by its topological charge and orbital angular momentum, offers new insights in probing complex electronic structures, enhancing material characterization, and advancing high-resolution imaging techniques.
Externí odkaz:
http://arxiv.org/abs/2409.16542
Autor:
Jiang, Bocheng, Feng, Chao, Li, Changliang, Bai, Zhenghe, Wan, Weishi, Xiang, Dao, Gu, Qiang, Wang, Kun, Zhang, Qinglei, Huang, Dazhang, Chen, Senyu
A compact damping ring with limited circumference of about 160 m is proposed for producing kilowatt-level coherent EUV radiation. The electron bunch in the ring is modulated by a 257nm wavelength laser with the help of the angular dispersion induced
Externí odkaz:
http://arxiv.org/abs/2110.08987
Autor:
Qi, Fengfeng, Ma, Zhuoran, Zhao, Lingrong, Cheng, Yun, Jiang, Wenxiang, Lu, Chao, Jiang, Tao, Qian, Dong, Wang, Zhe, Zhang, Wentao, Zhu, Pengfei, Zou, Xiao, Wan, Weishi, Xiang, Dao, Zhang, Jie
We propose and demonstrate a novel scheme to produce ultrashort and ultrastable MeV electron beam. In this scheme, the electron beam produced in a photocathode radio-frequency (rf) gun first expands under its own Coulomb force with which a positive e
Externí odkaz:
http://arxiv.org/abs/2003.08046
Autor:
Huang, Peng-Wei, Qian, Houjun, Chen, Ye, Filippetto, Daniele, Gross, Matthias, Isaev, Igor, Koschitzki, Christian, Krasilnikov, Mikhail, Lal, Shankar, Li, Xiangkun, Lishilin, Osip, Melkumyan, David, Niemczyk, Raffael, Oppelt, Anne, Sannibale, Fernando, Shaker, Hamed, Shu, Guan, Stephan, Frank, Tang, Chuanxiang, Vashchenko, Grygorii, Wan, Weishi
Publikováno v:
Phys. Rev. Accel. Beams 23, 043401 (2020)
In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low thermal emittance cathode developments and diagnostics are very important. Conventional thermal emittance
Externí odkaz:
http://arxiv.org/abs/2002.06837
An analytical method of calculating eddy current in a metallic spinning gyroscope in external magnetic field is presented. With reasonable assumptions, the problem is simplified from the time-dependent one governed by Maxwell equations to the boundar
Externí odkaz:
http://arxiv.org/abs/1908.04713
Autor:
Lu, Chao, Jiang, Tao, Liu, Shengguang, Wang, Rui, Zhao, Lingrong, Zhu, Pengfei, Liu, Yaqi, Xu, Jun, Yu, Dapeng, Wan, Weishi, Zhu, Yimei, Xiang, Dao, Zhang, Jie
Accelerator-based MeV ultrafast electron microscope (MUEM) has been proposed as a promising tool to study structural dynamics at the nanometer spatial scale and picosecond temporal scale. Here we report experimental tests of a prototype MUEM where hi
Externí odkaz:
http://arxiv.org/abs/1803.04670
The field of beam physics touches many areas of physics, engineering, and the sciences. In general terms, beams describe ensembles of particles with initial conditions similar enough to be treated together as a group so that the motion is a weakly no
Externí odkaz:
https://library.oapen.org/handle/20.500.12657/50888
Publikováno v:
Phys. Rev. B 95, 075439 (2017)
In this paper, we present a 3-D one step photoemission model that can be used to calculate the quantum efficiency and momentum distributions of electrons photoemitted from ordered single crystal surfaces close to the photoemission threshold. Using Ag
Externí odkaz:
http://arxiv.org/abs/1612.07452
Akademický článek
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Publikováno v:
In Ultramicroscopy June 2021 225