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本文论证了当泵浦波的强度足够强时,在相当普遍的条件下,对均匀等离子体,唯一可以发生的参量不稳定性是类似于弱场的振荡二束不稳定性(OTSI)。对均匀及弱不均匀等离子体,高频强泵浦场激发的参量不稳定性都是绝对不稳定性。同样的性质在磁化等离子体中也可以得到。Under a quite general condition, we show that a very strong high frequency pump can only excite the OTSI-like absolute instabilities in either uniform or nonuniform plasmas.Such property can be extended to magnetized plasmas as well.
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