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本文分析了大涨落作用下损耗模式RF-SQUID能够正常工作的条件,得到了此条件下磁通跃迁的几率密度并由此求出磁通跃迁平均值及其宽度。结果表明:大的热涨落使RF-SQUID环路有效临界电流明显下降,从而使跃迁点大大提前,跃迁宽度满足一个普适表达式。In the presence of large thermal fluctuation, conditions that RF-SQUID in the dissipa-tive mode can be properly operated are analysed, the flux transition distribution densities are obtained, thus the mean value and the width of transition are derived. Finally we find that the-effective critical current of RF-SQUID loop is greatly reduced by large fluctuation and the transition width can be determined with a simple equation.
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