Title: Particle Emission Angle Determination in Frisch Grid Ionization Chambers by Electron Drift-Time Measurements
Authors: GOEOEK A.CHERNYKH M.ENDERS J.OBERSTEDT A.OBERSTEDT Stephan
Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 621 no. 1-3 p. 401-405
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2010
JRC N°: JRC56948
ISSN: 0168-9002
URI: www.elsevier.com/locate/nima
http://publications.jrc.ec.europa.eu/repository/handle/JRC56948
DOI: 10.1016/j.nima.2010.05.009
Type: Articles in Journals
Abstract: The double kinetic energy measurement of fission fragments with a double-sided Frisch grid ionization chamber allows a careful determination of the emission angle, which is essential in order to apply appropriate energy-loss corrections. We present a drift-time method which uses the time that free electrons need to drift from the location of their creation, e.g. by a fission fragment in the counting gas, to the grid, before inducing a signal on the anode. Such a measurement leaves energy and angular information fully decoupled. We demonstrate the applicability of the drift-time method for the example of the 234,238U(¿,f) reactions performed at the superconducting Darmstadt electron linear accelerator. The angular resolutions achieved with this method are comparable to those obtained with other methods.
JRC Institute:Institute for Reference Materials and Measurements

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