Sandweiss J
Department of Physics, Yale University, New Haven, Connecticut 06511.
Bioelectromagnetics. 1990;11(2):203-5. doi: 10.1002/bem.2250110210.
The cyclotron-resonance model, which has been suggested as an explanation of a purported enhancement of transport of ions through the membranes of cells exposed to weak, low-frequency-modulated RF fields, is shown to be inconsistent with basic physical principles. Under the conditions of the model, in which the ions are presumed to circulate under the constraint of the earth's magnetic field, the radii of gyration of the ions would approximate 50 m and, thus, are much larger than the cells. Moreover, from general considerations, the collision-damping time of such ions is expected to be less than 10(-10) s, much smaller than the times of the order of 10(-2) s, shown to be necessary if the conditions for low-frequency resonance are to be satisfied.
回旋共振模型被认为可解释所谓的在暴露于弱的、低频调制射频场的细胞中离子跨膜传输增强的现象，但该模型与基本物理原理不一致。在该模型的条件下，假定离子在地磁场约束下做圆周运动，离子的回旋半径约为50米，因此比细胞大得多。此外，从一般情况考虑，此类离子的碰撞阻尼时间预计小于10的负10次方秒，远小于为满足低频共振条件所需的约10的负2次方秒的时间。
