Tongnyeol Rhee

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The orbits of lost ions can be calculated from the information obtained by a fast ion loss detector (FILD). The orbits suggest a source of the lost fast ions in a phase space. However, it is not obvious whether an observable set of orbits, or phase space, of a FILD appropriately covers the region of interest to be investigated since the observable phase(More)
Since the early days of plasma simulation studies, superthermal electrons having energies much greater than the injected beam electrons have been widespreadly observed. The origin of such superthermal tail in the electron velocity distribution is generally believed due to the second order Fermi acceleration, i.e., the acceleration due to turbulence. In this(More)
Measurements of the time-integrated triton burnup for deuterium plasma in Korea Superconducting Tokamak Advanced Research (KSTAR) have been performed following the simultaneous detection of the d-d and d-t neutrons. The d-d neutrons were measured using a (3)He proportional counter, fission chamber, and activated indium sample, whereas the d-t neutrons were(More)
It has been known since the early days of plasma physics research that superthermal electrons are generated during beam-plasma laboratory experiments. Superthermal electrons (the kappa distribution) are also ubiquitously observed in space. To explain such a feature, various particle acceleration mechanisms have been proposed. However, self-consistent(More)
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