scholarly journals Optical fiber-driven low energy electron gun for ultrafast streak diffraction

2018 ◽  
Vol 113 (13) ◽  
pp. 133502 ◽  
Author(s):  
Chiwon Lee ◽  
Günther Kassier ◽  
R. J. Dwayne Miller
Keyword(s):  
Optical Fiber ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
Low Energy Electron

scholarly journals Optical fiber-driven low-energy electron gun for time-resolved streak diffraction

2019 ◽  
Vol 205 ◽  
pp. 08016
Author(s):  
Chiwon Lee ◽  
H. Kassier Gunther ◽  
R. J. Dwayne Miller
Keyword(s):  
Electron Diffraction ◽  
Optical Fiber ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
Single Shot ◽  
Optical Fibres ◽  
Time Resolved ◽  
Low Energy Electron Diffraction ◽  
Low Energy Electron

The wave guiding feature of the optical fibre optical fibres is specifically exploited to construct a novel type of electron gun to realize single-shot low-energy electron diffraction experiments with the sub-picosecond resolution for studying irreversible samples.

Spin Polarized Low Energy Electron Microscopy of Surface Magnetic Structure

1991 ◽  
Vol 232 ◽  
Author(s):  
M. S. Altman ◽  
H. Pinkvos ◽  
J. Hurst ◽  
H. Poppa ◽  
G. Marx ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Magnetic Structure ◽  
Electron Beams ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
Image Subtraction ◽  
Topological Features ◽  
Spin Polarized ◽  
Low Energy Electron

ABSTRACTSpin polarized low energy electron microscopy (SPLEEM) has been developed for the high resolution imaging of surface magnetic structure. The existing LEEM ha.s been modified by the incorporation of a. GaAs-type spin polarized electron gun. Large image contrast arises due to the spin-dependent exchange scattering, whifle the st.in-orbit contribution vanishes uniquely for the normal incidence/exit geometry used here. Pixel by pixel image subtraction for incident electron beams of opposite polarization yields precisely the spatially resolved Bragg reflection asymmetry observed in spin polarized low energy electron diffraction. The shallow electron penetration depth arising from the strong coulombic interaction is advantageous for separating surface behavior from the normally overwhelning bulk. Therefore, the use of transversally polarizedI electron beams allows the determination of in-plane surface magnetization directions. Fnrthermore, the parallel illumination and detection of SPLEEM makes it possible to image quickly with a. resolution better than 500 Å in the present configuration. A useful and direct. comparison between surface magnetic, structural, and topological features is made possible by the augmentation of the unique imaging capabilities of conventional LEEM with the magnetic sensitivity of SPLEEM. In this manner, the magnetic domain structure of a Co (0001) surface and in-situ grown Co filmns on Mo(110) have been determined.

Real Time Magnetic Imaging by Spin-Polarized Low Energy Electron Microscopy with Highly Spin-Polarized and High Brightness Electron Gun

2010 ◽  
Vol 3 (2) ◽  
pp. 026601 ◽  
Author(s):  
Masahiko Suzuki ◽  
Michihiro Hashimoto ◽  
Tsuneo Yasue ◽  
Takanori Koshikawa ◽  
Yasuhide Nakagawa ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Real Time ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
High Brightness ◽  
Magnetic Imaging ◽  
Spin Polarized ◽  
Low Energy Electron

A floating low energy electron gun (FLEG) for charge compensation in SIMS and other applications

2003 ◽  
Vol 203-204 ◽  
pp. 343-347 ◽  
Author(s):  
R. Gibbons ◽  
M.G. Dowsett ◽  
J. Kelly ◽  
P. Blenkinsopp ◽  
R. Hill ◽  
...  
Keyword(s):  
Charge Compensation ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
Low Energy Electron

Development of an Ultrafast Low Energy Electron Gun for Imaging and Diffraction

2012 ◽  
Author(s):  
Max Gulde ◽  
Simon Schweda ◽  
Manisankar Maiti ◽  
Sascha Schäfer ◽  
Claus Ropers
Keyword(s):  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
Low Energy Electron
Sign in / Sign up

Export Citation Format

Share Document