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Helicons-the early years

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2 Author(s)
Boswell, R.W. ; Plasma Res. Lab., Australian Nat. Univ., Canberra, ACT, Australia ; Chen, F.F.

Helicon waves are right-hand polarized (RHP) waves which propagate in radially confined magnetized plasmas for frequencies ωci ≪ω≪ωce where ωci is the ion cyclotron frequency and ωce is the electron cyclotron frequency. They are part of a much larger family of waves which can propagate down to zero frequency and constitute a very rich field for studying complex propagation characteristics and wave-particle interactions. This paper gives a historical perspective of the waves and their relationship to plasma source development up to the mid 1980s, presents a simple description of their propagation characteristics in free and bounded plasmas, and finishes with their first reported use in plasma processing experiments

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Plasma Science, IEEE Transactions on  (Volume:25 ,  Issue: 6 )