CROSSED FIELD CHARGED PARTICLE DELAY LINES
ILLINOIS UNIV AT URBANA COORDINATED SCIENCE LAB
Pagination or Media Count:
Crossed electric and magnetic fields are used to focus a beam of charged particles and to control the drift velocity of these particles. The novel and useful properties are 1 the time delay can be varied continuously and rapidly 2 the frequency band is potentially very wide. A discussion of the effects that limit bandwidth is presented and several means for reducing the limitations are described. In particular, a hyperboloidal structure is described that can maintain equal flight times in circular delay lines the use of plasmas is discussed, and the field averaging properties of high energy electrons is analyzed. Experiments are described in which electrons or ions drifting at speeds less than 10,000 meterssecond delay signals by as much as 50 microseconds. Results, usually in the form of oscillograms, show the effects of space charge, and in the case of tenuous plasmas, the effects of pressure on the shapes of video pulses.
- Electrical and Electronic Equipment