Use of the TFTR prototype charge exchange neutral analyzer for fast He/sub 3//sup + +/ diagnostics during ICRF heating on PLT

Comparison of bounce-averaged quasilinear theory with charge exchange measurements during minority fundamental and majority second harmonic ICRF heating in PLT

10.1063/1.35234 ◽

1985 ◽

Author(s):

G. W. Hammett ◽

P. L. Colestock ◽

G. Gammel ◽

R. J. Goldston ◽

J. C. Hosea ◽

...

Keyword(s):

Charge Exchange ◽

Second Harmonic ◽

Quasilinear Theory ◽

Icrf Heating

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Analysis of charge-exchange spectra during ICRF heating in the JFT-2 tokamak

Nuclear Fusion ◽

10.1088/0029-5515/24/2/007 ◽

1984 ◽

Vol 24 (2) ◽

pp. 211-218 ◽

Cited By ~ 7

Author(s):

Y. Miura ◽

H. Matsumoto ◽

H. Kimura ◽

K. Odajima ◽

M. Mori ◽

...

Keyword(s):

Charge Exchange ◽

Icrf Heating

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First H+ Charge-Exchange Images in the Stim.

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100092487 ◽

1976 ◽

Vol 34 ◽

pp. 504-505

Author(s):

Wm. H. Escovitz ◽

T. R. Fox ◽

R. Levi-Setti

Keyword(s):

Charge Exchange ◽

Neutral Component ◽

Channel Electron Multiplier ◽

Electron Multiplier ◽

Neutral Particles ◽

Charged Beam ◽

Scanning Transmission ◽

Contrast Mechanism ◽

Ion Microscopy ◽

Beam Component

Charge exchange, the neutralization of ions by electron capture as the ions traverse matter, is a well-known phenomenon of atomic physics which is relevant to ion microscopy. In conventional transmission ion microscopes, the neutral component of the beam after it emerges from the specimen cannot be focused. The scanning transmission ion microscope (STIM) enables the detection of this signal to make images. Experiments with a low-resolution 55 kV STIM indicate that the charge-exchange signal provides a new contrast mechanism to detect extremely small amounts of matter. In an early version of charge-exchange detection (fig. 1), a permanent magnet installed between the specimen and the detector (a channel electron multiplier) sweeps the charged beam component away from the detector and allows only the neutrals to reach it. When the magnet is removed, both charged and neutral particles reach the detector.

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