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Kilpatrick limit : ウィキペディア英語版
Kilpatrick limit
In particle accelerators, a common mechanism for accelerating a charged particle beam is via copper resonant cavities in which electric and magnetic fields form a standing wave, the mode of which is designed so that the E field points along the axis of the accelerator, producing forward acceleration of the particles when in the correct phase.
The maximum electric field E achievable is limited by a process known as RF breakdown. The reliable limits for various RF frequencies f were tested experimentally in the 1950s by W. D. Kilpatrick.
An approximate relation by least-square optimization of the data yields〔. This form apparently comes from a Los Alamos note:
: T. J. Boyd, Jr., ''Kilpatrick's criterion'', Los Alamos Group AT-1 report AT-1:82-28, February 12, 1982.〕
f = 1.64\,\mathrm \cdot \left(\frac\right)^2 \cdot \exp\left( -8.5 \frac \right), \quad with E_0 = 1 \mathrm} (megavolts per metre).
This relation is known as the Kilpatrick Limit.
== References ==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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