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- W1656403741 abstract "Initial spectroscopic data from MS showed evidence of ion heating as deduced from the line widths of different ion species. Detailed measurements of OIV spectral emission line profiles in space and time revealed that heating takes place at early time, before spheromak formation and is occurring within the current discharge. The measured ion temperature is several times the electron temperature and cannot be explained by classical (Spitzer) resistivity. Classically, ions are expected to have lower temperatures than the electrons and therefore, lower temperatures than observed. High ion temperatures have been observed in different RFP`s and Spheromaks but are usually associated with relaxation to the Taylor state and occur in the sustainment phase. During formation, the current delivered to start the discharge is not axisymmetric and as a consequence, X-points appear in the magnetic flux. A two dimensional analysis predicts that magnetic reconnection occurring at an X-point can give rise to high ion heating rates. A simple 0-dimensional calculation showed that within the first 20 μs, a conversion of mass flow kinetic energy into ion temperature could take place due to viscosity." @default.
- W1656403741 created "2016-06-24" @default.
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- W1656403741 date "1992-01-01" @default.
- W1656403741 modified "2023-09-26" @default.
- W1656403741 title "Ion temperature measurements in the Maryland Spheromak" @default.
- W1656403741 doi "https://doi.org/10.2172/10140798" @default.
- W1656403741 hasPublicationYear "1992" @default.
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