X-point radiation: From discovery to potential application in a future reactor
M. Bernert; T.O.S.J. Bosman; T. Lunt; O. Pan; B. Sieglin; U. Stroth; A. Kallenbach; S. Wiesen · 2025 · Nuclear Materials and Energy
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract
Power exhaust is a crucial issue for future fusion reactors. Divertor detachment and the required power dissipation fractions of about 95% are foreseen to be achieved by impurity seeding. In a tokamak, at high seeding levels the radiation often concentrates in a small region inside the confined plasma near the X-point. In early observations the so-called X-point radiator (XPR) often led to back-transitions to L-mode or disruptions. In metal tokamaks or with higher available heating power, these regimes can be stabilized and are now established on AUG, JET, TCV, KSTAR and WEST. The XPR is a col
Abstract by M. Bernert; T.O.S.J. Bosman; T. Lunt; O. Pan; B. Sieglin; U. Stroth; A. Kallenbach; S. Wiesen, Nuclear Materials and Energy (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.1016/j.nme.2025.101916