Hull Lecture No. 4 Fast Circuits, Diodes and Cathodes for e-Beams

Abstract

The topics which should be covered in these notes represents the majority of the SSWA group activity over the past eight years or so. The material of the other four lectures represents peripheral or side issues which were necessary to tackle in order to work effectively in the desired area. Thus ideally these notes should and could be many times the length of the others combined. However, apart from e-beam triggered discharges Hull University is not too likely to have any need for data from this area, hence both the lecture and these notes will only briefly cover the topics involved. This is so that a properly balanced overall picture can be given and in the event that some new area does assume importance (such as direct pumping with e-beams) an appreciation can be made of what has been done and what sort of effort is required. For details of what is still a rapidly evolving field, we should be approached for the latest position as far as we know it. As ever the NPT note should be consulted for a general review of the high speed output lines of use and Reference (1) (now sadly outdated) gives a popular resume of some of the systems we built years ago. Reference (2) gives a detail of a medium sized system of some five years ago. Reference (3) gives a detailed description of a pulse charge low impedance line using gas switching and also gives details of the real life performance of a strip line version of the Blumlein circuit in some of its variants.

SSWA/JCM/HUN/5 June 1975