“…The theory of mode coupling in cold plasmas has been studied in considerable detail specifically with reference to solar observations (Piddington and Minnett, 1951;Cohen, 1960;Melrose, , 1974aMelrose, , b, 1980aZheleznyakov, 1977;Zheleznyakov andZlotnik, 1978, 1988;Suzuki and Sheridan, 1980;Bandiera, 1982). There are two electromagnetic modes which can propagate in a cold plasma: the ordinary (o) and extraordinary (x).…”