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<RESEARCH REPORT>Determination of Pitch Angles of Magnetic Field Lines in Tokamak with Obliquely Injected Helium Beam
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- MOHRI Akihiro
- Institute of Plasma Physics, Nagoya University
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Description
Pitch angles of magnetic field lines or q-profile in high density tokamak can be determined by a new method proposed here. Blobs of monoenergetic helium beam with different velocities are injected into the tokamak obliquely to the toroidal direction on a poloidal plane x. Produced He^+ ions move nearly along magnetic field lines, and their front emitting a HeII line crosses a different sight plane and forms a curve on it. Optically measured shift of the curve from x leads to the distribution of pitch angle after correction of perpendicular drift motion of He^+ ions using the velocity dependence of the drift.
Journal
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- Research report
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Research report 825 1-17, 1987-04
National Institute for Fusion Science
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Details 詳細情報について
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- CRID
- 1570572701838302848
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- NII Article ID
- 110000012168
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- NII Book ID
- AA0081640X
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- ISSN
- 04694732
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- Text Lang
- en
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- Data Source
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- CiNii Articles