摘要:

Observations of the fluctuations by electrostatic and magnetic probes are made in the toroidal octopole device. The plasma density is varied from5 × 108cm−3to 1010cm−3. The ion and electron temperatures are approximately 100 and 6 eV, respectively. The fluctuations exist only where the density gradient is large. The amplitude of the potential fluctuation is less than one‐hundredth of the electron temperature at the strongest magnetic field. A transmission experiment is performed to obtain the dispersion relation of the waves. Qualitative comparison with linear theory on instabilities singles out the drift cyclotron instability as consistent with the observations. Quantitative comparison with the computed dispersion relation is also made on the dependence on the magnetic field and the plasma density. The rate of transport of the plasma across the magnetic field estimated from the fluctuation amplitudes is orders of magnitude smaller than the rate obtained from the ion confinement time. The amplitudes can be reduced when the magnetic field is increased or when a small toroidal field is applied.

ISSN:0031-9171    

DOI:10.1063/1.1692240

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The partition function of a classical many‐body system is formally extended to space‐time. The total space‐time correlation function is expressed in terms of a time‐dependent direct correlationcˆ(x, t).

ISSN:0031-9171    

DOI:10.1063/1.1692241

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The time‐dependent functional integral expression for the field correlation, which is derived exactly from the well‐known Hopf functional formalism for turbulence, is numerically estimated by the Monte Carlo quadrature for Burgers' model of turbulence.

ISSN:0031-9171    

DOI:10.1063/1.1692242

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

For a system governed by a generalized Ohm's law, an arbitrary velocity field cannot independently maintain magnetic field fluctuations in a two‐dimensional situation.

ISSN:0031-9171    

DOI:10.1063/1.1692243

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The perturbation method of Bogoliubov, Krylov, and Mitropolsky is applied to the study of nonlinear effects of propagating waves of extraordinary mode in a cold plasma. Amplitude‐dependent wavelength and frequency shifts including relativistic corrections are obtained.

ISSN:0031-9171    

DOI:10.1063/1.1692244

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The plasma camera has been used to observe flute modes in a single‐endedQ‐machine. The flutes, rotating in theE × Bdirection, are irregular extensions of the plasma column and exhibit a convective mass transfer phenomenon by the breaking off of the flutes.

ISSN:0031-9171    

DOI:10.1063/1.1692245

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1692246

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1692247

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1692248

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1692249

出版商:AIP    

年代:1968

数据来源: AIP