Beam self-focussing in a laser-produced plasma in a magnetic field

Cohn, D.R.; Raff, G.J.; Brooks, Robert L.; Loter, N.; Halverson, W.

doi:10.1016/0375-9601(74)90686-0

Cited by 22 publications

(3 citation statements)

References 4 publications

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“…The formation of the beam-trapping density profile has been experimentally observed by Conn et al [ 3] and by Johnson and Chu [ 4]. Calculations on plasma heating carried out by us and by Burnett and Offenberger [ 5] have also indicated that a density minimum exists on the axis of the heated plasma column for incident Gaussian beams.…”

Section: Introductionmentioning

confidence: 57%

Laser-beam propagation in a long solenoid

1975

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An analysis of the propagation of a laser beam in a cylindrical magnetically confined plasma with parabolic density profile is presented. The normal modes which are self-trapped are given. It is found that the largest mode that can be trapped by the plasma is given by (1/2) where R0 is the radius of the plasma column and w is the fundamental mode width. It is found that all the trapped modes in a finite plasma can easily propagate distances of the order of one kilometer. An exact solution for the amplitude of the electric field for an incident Gaussian beam has been obtained. The solution exhibits alternate focusing and de-focusing of the beam. The effect of this on the plasma heating is discussed.

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Section: Introductionmentioning

confidence: 57%

Laser-beam propagation in a long solenoid

1975

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“…Beam self-focusing in a laser-produced plasma in a magnetic field has also been observed [151]. A 20-J laser produced a 35-50 eV plasma in 5 torr of He.…”

Section: Experimental Workmentioning

confidence: 89%

Laser heating of magnetized plasmas

Kristiansen¹,

Hagler²

1976

Nucl. Fusion

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Current research on long-wavelength laser interaction with magnetized plasmas is summarized. Special attention is given to laser beam guiding in plasma density minima, to plasma heating and to investigations of laser-produced plasmas in strong magnetic fields. The basic theoretical and experimental background aad research are discussed. Reactor studies based on lassr heated plasma systems are reviewed. Some areas of possible future research are mentioned.

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“…It is also possible for the plasma to act as a dielectric waveguide for the laser radiation. This effect, sometimes known as "beam-trapping [175]. This also requires further investigation.…”

Section: Discussionmentioning

confidence: 99%

Investigation into surface texturing by magnetic field assisted laser-produced plasma

Farrokhi¹

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Wang Zhongke (SIMTech) for their kind suggestions and help. Besides, I appreciate the good working environment, kind assistance, and friendly encouragement from our research group and kind staffs at NTU. And finally, but most of all, I would like to thank my father soul, Ahmad, for his encouragement in my dreams, my mother, Aleme, for her encouragement, support, and love, my dear brothers, Prof. Farahman Farrokhi, Dr. Alireza Farrokhi, and Mr. Mohammad Farrokhi for their constant help, support and encouragement, my best PhD friend, Dr. Dong Jing, for her kindness and friendship. The last thing to say is that I heartily appreciate all your kindness, help, support, and consideration. I really hope all lessons that I have got during my study in NTU/Singapore could help me to build the path into Good Thoughts, Good Words, and Good Deeds throughout my life. This is my ultimate goal before leaving this planet, Earth.

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Beam self-focussing in a laser-produced plasma in a magnetic field

Cited by 22 publications

References 4 publications

Laser-beam propagation in a long solenoid

Laser-beam propagation in a long solenoid

Laser heating of magnetized plasmas

Investigation into surface texturing by magnetic field assisted laser-produced plasma

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