A new energy and angle resolving electron spectrometer - First results

被引：42
|
作者：
Ohrwall, G. [1 ]
Karlsson, P. [2 ]
Wirde, M. [2 ]
Lundqvist, M. [2 ]
Andersson, P. [1 ]
Ceolin, D. [3 ]
Wannberg, B. [2 ]
Kachel, T. [4 ]
Duerr, H. [4 ]
Eberhardt, W. [4 ]
Svensson, S. [3 ]
机构：
[1] Lund Univ, MAX Lab, SE-22100 Lund, Sweden
[2] VG Scienta AB, SE-75015 Uppsala, Sweden
[3] Uppsala Univ, Dept Phys & Astron, SE-75121 Uppsala, Sweden
[4] BESSY II, Helmholtz Zentrum Berlin, D-12489 Berlin, Germany
来源：
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2011年 / 183卷 / 1-3期
基金：
瑞典研究理事会;
关键词：
Electron spectrometer; Time of flight; Angular resolution; Two-dimensional band mapping; PHOTOEMISSION-SPECTROSCOPY; COINCIDENCE; MOMENTUM;
D O I：
10.1016/j.elspec.2010.09.009
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A new energy and angle resolved analyzer for photoelectron spectroscopy is described. This analyzer is based on combining an advanced focusing electron lens system with time-of-flight measurements. A position sensitive detector gives time and position for the electron events. From this information the kinetic energy and start direction are obtained through a transformation procedure, giving both a large luminosity and a very high energy resolution. The instrument analyses the angles of emission of the electrons in a cone with 30 degrees opening angle and simulations show that extremely high energy and angular resolution can be achieved simultaneously. We report the first results from this instrument, obtained at the PM-3 beam line at BESSY (Berlin, Germany). This analyzer opens up new possibilities for angular resolved electron spectroscopy, band-mapping and other applications. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：125 / 131
页数：7
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