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However, they are in agreement with the cathode mechanism proposed by Rittner and co‐workers based upon extensive experimental studies.
Attacks by rays on energized electrodes provide the first evidence that electric rays use electroreceptors to detect their prey.
In the case of cathode rays it is easy to produce rays comprised in a wide range, since the difficulties presenting themselves are mainly ones of manipulation, which can usually be surmounted.
In addition to providing a quantitative picture of the interaction of bacteria and cathode rays, these results suggest that radiation of the energy content used in our experiments is not suitable for altering the inheritable characteristics of bacteria.
Journal ArticleDOI
Robbins Ll, Aub Jc 
01 Jan 1946-Radiology
16 Citations
It seems important also to emphasize the dangers inherent in scattered as well as in direct cathode rays, in order that the recurrent enthusiasm for their therapeutic possibilities may not be permitted to overshadow their possible harmful effects.
The good emission of energetic electrons from a ceramic cathode at few hundred degrees temperature, makes this kind of cathode a proper electron injector for ion sources.
A design based on appropriately chosen materials (including high-Z cathodes) and geometries (including a small angle between cathode surface and incident x rays) can provide good signals from the 1–100 keV x rays that are of particular importance for imaging the plasmas in the Joint European Torus (JET) and ITER.
However, very low energy X-rays are expected to be more biologically effective, per unit absorbed dose, than high energy X-rays or gamma rays due to the production of lower energy secondary electrons, with a correspondingly higher LET.
Emission images of the cathode surface prove that the plasma layer forms on the cathode surface, and the production mechanism of the high-current electron beams is explosive electron emission.
This effect is closely associated with the nature of the cathode material.

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