期刊
EPL
卷 91, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/91/46004
关键词
-
资金
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- Dutch Technology Foundation STW
- Ministry of Economic Affairs
Ultracold electron sources, which are based on near-threshold photo-and fieldionization of a cloud of laser-cooled atoms, offer the unique combination of low emittance and extended size that is essential for achieving single-shot, ultrafast electron diffraction of macromolecules. Here we present measurements of the effective temperature of such a pulsed electron source employing rubidium atoms that are magneto-optically trapped at the center of an accelerator structure. Transverse source temperatures ranging from 200K down to 10K are demonstrated, controllable with the wavelength of the ionization laser. Together with the 50 mu m source size, the achievable temperature enables a transverse coherence length of approximate to 20nm for a 100 mu m sample size. Copyright (C) EPLA, 2010
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据