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Volume 17 (1966)
- Issue 6 Pages 540-
- Issue 5 Pages 446-
- Issue 4 Pages 327-
- Issue 3 Pages 225-
- Issue 2 Pages 81-
- Issue 1 Pages 1-
Volume 17, Issue 3
Displaying 1-7 of 7 articles from this issue
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S. Mikoshiba, K. Hirano, Y. Nakano1966 Volume 17 Issue 3 Pages 225-234
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSThis paper describes the method of measuring ion temperature (Ti) electron temperature (Te) and density n of the streaming plasma by inserting plane probes, each Of these faces to appropriate direction. Using this method, furthermore, reasonable values of Ti, Te and n of the plasma made with coaxial plasma e gun are obtained.View full abstractDownload PDF (604K) -
J. Irisawa, M. Ohtani, K. Hirano, Y. Nakano1966 Volume 17 Issue 3 Pages 235-246
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSPossibilities of plasma confinement in cusped geometry are investigated. The plasmas are made by two coaxial guns mounted so as to fire simulteneously against one another into opposite ends of an evacuated drift tube. The cusp coil is located at the center of the drift tube. Behaviers of plasmas are mainly observed with magnetic probes.
As the ordered motion of plasmas can be stopped, β=1 region appears instanteneously in the neighborhood of the midplain of the cusped geometry. It is also confirmed that a condition of β=1 occurs in center region of the cusped magnetic bottle notwithstanding p is less than unity at point cusps.View full abstractDownload PDF (867K) -
Kenro Miyamoto, Kazuo Mori, Kozo Ando, Masamoto Otsuka, Tsutomu Ishimu ...1966 Volume 17 Issue 3 Pages 247-254
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSFor the measurement of a profile of spectral line, a high dispersive monochrometer with an Echelle-grating and 12 channels of photoelectric devices using thin glass sheets, to separate the line profile are constructed. The measured resolving power is about 2×105 and the linear dispersion at the image plane is 1.2 mm/A. This instrument is applied to measure the ion temperature of MACETIE device by using the line of He II 4686 A.View full abstractDownload PDF (603K) -
Measurements of Density and Temperature of the Preionized PlasmaYukio SAKAGAMI, Tsuyoshi KOTANI, Chiyoe YAMANAKA1966 Volume 17 Issue 3 Pages 255-264
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSThe preionized plasma was produced in which we try to collisionless shock waves. Its density was measured by the cut off of the microwaves of three different frequencies 75, 10 and 4Gc. Almost fully ionized plasma was maintained during 115 μs. Electron temperature was measured to be 15eV by pulsed double probe., technique. Ion temperature was estimated to be 15eV by measuring the pinch velocity of the linear discharged plasma. From ti-se values collision mean free path between charged particles was calculated; λeo=λii 7.6cm, λei 6.3 × 102 cm. It was found that the preionized plasma was almost fully ionized and collisioniess.
Measured shock thickness could not be explained by hydrodynamics and magnetohydrodynamics but seems to be treated by Sagddeev's theory.View full abstractDownload PDF (833K) -
Sin-Li Chen1966 Volume 17 Issue 3 Pages 265-276
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSA basic consideration on the mechanism of ion sheath formation was made, and the Child-Langmuir space charge equation was used to calculate the Ion Current-Voltage Characteristics of an electrostatic probe as well as the theoretical value of the β which was defined as the gradient of the scivare of the ion current with probe potential. (1)
A nomogram based upon the estimated theoretical value of β is presented for the rapid and accurate determination of plasma parameters from the usual-Triple-Probe datas in which β=0 is assumed.
Experimental confirmations were made through the measurements of some stationary plasmas, and the advantage of the nomogram has been verified.View full abstractDownload PDF (1392K) -
Ryohei Itatani, Hirotada Abe1966 Volume 17 Issue 3 Pages 282-299
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSA method to determine analytically the coil arrangement for a required magnetic field is studied, when the scalar potential of the magnetic field is given. The design process is as follows : a current potential or a stream function i is calculated at first on an adequate surface on which currents flow, and, as next stage, the current potential I is approximated with linear segments along grad (I), in order to convert the surface current to lumped coils, where the current potential I is defined as I=φ1-φ2 and φ2 is the potuatial outside the surface and satisfies the boundary condition on the surface with φ1.
The scalar potential φ due to the current potential I on the surface S is written as ψ=μ0/4π∫I grad (1/r) ds.
For thick coil, a number ofsurface must be taken into account, on which current potentials are defined.
The examples are shown for cylindrical-, SPherical-, prolate spheroidal- and troidal co-ordinate.View full abstractDownload PDF (1525K) -
1966 Volume 17 Issue 3 Pages 314
Published: 1966
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSDownload PDF (51K)
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