The low-field density peak in helicon discharges
Although the density n in helicon discharges increases monotonically with magnetic field B for B larger than a few hundred gauss, as expected from theory, a pronounced density peak is often observed a...
Although the density n in helicon discharges increases monotonically with magnetic field B for B larger than a few hundred gauss, as expected from theory, a pronounced density peak is often observed a...
Theoretical investigation of discharge parameters in magnetized radio frequency excited CO2 lasers
In the present paper the magnetic field effects on discharge parameters in rf excited CO2 lasers are calculated. A rf generated plasma imbedded in an external, constant, and homogeneous magnetic field...
In the present paper the magnetic field effects on discharge parameters in rf excited CO2 lasers are calculated. A rf generated plasma imbedded in an external, constant, and homogeneous magnetic field...
Ion acceleration in plasmas emerging from a helicon-heated magnetic-mirror device
Phys. Plasmas 10, 2593 (2003); doi:10.1063/1.1568342
Issue Date: June 2003 | See: Publisher's Note
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Using laser-induced fluorescence, measurements have been made of metastable argon-ion, Ar+*(3d4F7/2), velocity distributions on the major axis of an axisymmetric magnetic-mirror device whose plasma is sustained by helicon wave absorption. Within the mirror, these ions have sub-eV temperature and, at most, a subthermal axial drift. In the region outside the mirror coils, conditions are found where these ions have a field-parallel velocity above the acoustic speed, to an axial energy of ~30 eV, while the field-parallel ion temperature remains low. The supersonic Ar+*(3d4F7/2) are accelerated to one-third of their final energy within a short region in the plasma column, 
1 cm, and continue to accelerate over the next 5 cm. Neutral-gas density strongly affects the supersonic Ar+*(3d4F7/2) density. ©2003 American Institute of Physics.
1 cm, and continue to accelerate over the next 5 cm. Neutral-gas density strongly affects the supersonic Ar+*(3d4F7/2) density. ©2003 American Institute of Physics.
| History: | Received 7 November 2002; accepted 25 February 2003; publisher error corrected 21 July 2003 |
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- Publisher's Note: "Ion acceleration in plasmas emerging from a helicon-heated magnetic-mirror device" [Phys. Plasmas 10, 2593 (2003)]
S. A. Cohen et al.
Phys. Plasmas 10, 3804 (2003)
EPAPS
- README.TXT (1 kB) 21-Jul-2003 15:32
- Report50.pdf (395 kB) 31-Mar-2003 15:55
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1089-7674 (online)
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REFERENCES (27)
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