Azimuthally varying field

...In the energy region where the particle speed is high and relativistic effects cannot be ignored (protons at approximately 2×10 ⁷ eV or higher), the increase in the particle's mass causes the rotation period and the period of the high-frequency electric field to no longer match, and this acceleration principle loses its effectiveness. Devices that remove this limitation and accelerate to even higher energies include the synchrocyclotron, which changes the frequency of the high-frequency wave to synchronize it with the particle's rotation period, and the AVF (azimuthally varying field) cyclotron, which varies the magnetic field distribution in the circumferential direction. Accelerator [Kimura Yoshitaka]...

*Some of the terminology used to refer to "azimuthally varying field" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…粒子の速度が大きく，相対論的効果が無視できないエネルギー領域(陽子では約2×10⁷eV以上)では，粒子の質量の増加によって回転周期と高周波電場の周期が一致しなくなり，この加速原理は有効性を失う。この制限を取り除き，さらに高エネルギーに加速する装置として，高周波の周波数を変化させて粒子の回転周期と同期させるシンクロサイクロトロンsynchrocyclotron，磁場の分布に円周方向の変化をもたせたAVF(azimuthally varying fieldの略)サイクロトロンAVF cyclotronがある。加速器【木村 嘉孝】。…

※「azimuthally varying field」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報