A MICROCHOPPER FOR NEUTRAL BEAMS

Authors
KUHNKE K KERN K DAVID R LINDENAU B COMSA G
Citation
K. Kuhnke et al., A MICROCHOPPER FOR NEUTRAL BEAMS, Review of scientific instruments, 65(3), 1994, pp. 653-656
Citations number
13
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
65
Issue
3
Year of publication
1994
Pages
653 - 656
Database
ISI
SICI code
0034-6748(1994)65:3<653:AMFNB>2.0.ZU;2-V
Abstract
A mechanical beam chopper with small dimensions is presented. The shap e of the generated neutral beam pulses is calculated and experimental results are discussed. The microchopper is based on the operation prin ciple of neutron choppers. It is operated in vacuum and generates mole cular beam pulses at a repetition rate of 10 kHz with pulse lengths ea sily adjustable between 5 and < 1 mus. The chopper can be used for tim e-of-flight applications and inherently acts as a high velocity pass f ilter.