Time-of-flight electron energy loss spectroscopy using TM 110 deflection cavities

We demonstrate the use of two TM resonant cavities to generate ultrashort electron pulses and subsequently measure electron energy losses in a time-of-flight type of setup. The method utilizes two synchronized microwave cavities separated by a drift space of 1.45 m. The setup has an energy resolutio...

Full description

Saved in:

Bibliographic Details
Published in:	Structural dynamics (Melville, N.Y.) Vol. 3; no. 5; p. 054303
Main Authors:	Verhoeven, W, van Rens, J F M, van Ninhuijs, M A W, Toonen, W F, Kieft, E R, Mutsaers, P H A, Luiten, O J
Format:	Journal Article
Language:	English
Published:	United States 01-09-2016
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	We demonstrate the use of two TM resonant cavities to generate ultrashort electron pulses and subsequently measure electron energy losses in a time-of-flight type of setup. The method utilizes two synchronized microwave cavities separated by a drift space of 1.45 m. The setup has an energy resolution of 12 ± 2 eV FWHM at 30 keV, with an upper limit for the temporal resolution of 2.7 ± 0.4 ps. Both the time and energy resolution are currently limited by the brightness of the tungsten filament electron gun used. Through simulations, it is shown that an energy resolution of 0.95 eV and a temporal resolution of 110 fs can be achieved using an electron gun with a higher brightness. With this, a new method is provided for time-resolved electron spectroscopy without the need for elaborate laser setups or expensive magnetic spectrometers.
ISSN:	2329-7778 2329-7778