摘要:

The classical relativistic equations of motion are solved for a charged particle moving in an arbitrary plane electromagnetic wave propagating along a constant homogenous magnetic field. The solutions are expressed by (proper time) evolution tensor factors, operating upon the initial value quantities. The calculations are performed in terms of tensor‐component matrices. Elliptically polarized waves are then considered. At resonance frequency an expression for the increase in the kinetic energy is obtained. This expression shows that the kinetic energy increases indefinitely, and that the energy exchange is caused by the field component rotating in the same direction as the particle.

ISSN:0031-9171    

DOI:10.1063/1.1692331

出版商:AIP    

年代:1969

数据来源: AIP

摘要:

A new ion cyclotron resonance heating system has been installed on the Model C stellarator. Use of low‐power rf during the entire Ohmic heating pulse shows that the density for optimum coupling is a factor of 1.5‐2 greater than that calculated from a simple theory. The variation of coupling with density and plasma radius is found to agree with theory. An anomalous second maximum in the coupling curve is found. At 1 MW power levels, little energy is transmitted around the∪bends by ion cyclotron waves, and it is necessary to have magnetic beaches adjacent to the Stix coil. Best heating is obtained with the least amount of magnetic beach. Use of a larger axial field gradient results in rapid loss of density under the Stix coil, with subsequent decrease in coupling and heating. The maximum ion temperature obtained in the∪bends is∼ 550 eV, uniform to within 20%. A model is proposed in which cooling is dominated by particle losses and charge exchange, the particle loss rate being dependent onkTe.

ISSN:0031-9171    

DOI:10.1063/1.1692332

出版商:AIP    

年代:1969

数据来源: AIP

摘要:

By using a special set of electromagnetic field potentials and an appropriate Lagrangian density, the momentum equation for a compressible, inviscid, infinitely conducting fluid undergoing isentropic motion in an electromagnetic field is obtained.

ISSN:0031-9171    

DOI:10.1063/1.1692333

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1692334

出版商:AIP    

年代:1969

数据来源: AIP