Experiments demonstrate a longitudinal instability of the negative-mass type in a high-current betatron at the time electrons are injected into the accelerating chamber. This instability limits the charge which can be captured in the acceleration mode; hence, in the design of high-current betatrons, the charge which can be accelerated must be consistent with the threshold number of particles for the onset of this instability for a given injected-electron energy and magnetic field index.
|Title of host publication||Sov Phys Tech Phys|
|Number of pages||2|
|Publication status||Published - 1975|
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