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Nicholas Tsoulfanidis—ANS member since 1969
We welcome ANS members who have careered in the community to submit their own Nuclear Legacy stories, so that the personal history of nuclear power can be captured. For information on submitting your stories, contact nucnews@ans.org.
As an undergraduate I studied physics at the University of Athens. I entered the university in 1955 after successfully passing a national exam (came up fourth in a field of about 700 candidates). Upon graduation and finishing my mandatory two-year military service, the plan was to teach physics either in a public high school or as a tutor for a private for-profit institution, preparing high school students for the national exam.
A. D. Beklemishev
Fusion Science and Technology | Volume 59 | Number 1 | January 2011 | Pages 184-186
doi.org/10.13182/FST11-A11603
Articles are hosted by Taylor and Francis Online.
Some open traps, like GOL-3, may be heated by axial electron beams. Since the heating is turbulent, it is associated with anomalous resistivity, so that the reverse induction current is pushed out to flow in the shell plasma along the beam edge. It is shown that such complicated distribution of axial current in equilibrium causes exponential amplification along the trap of any initial (at entrance) azimuthal modulation of the beam current density. As a result, the shape of the beam cross-section develops features like spiral arms, etc. at the end-plate, even if its shape was nearly circular at the entrance. Amplification occurs whenever there is an off-axis extremum on the radial distribution of the axial current density.