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PreprintCC BY-NC-ND 4.0arXiv

Electrons quench ion tails during evaporative cooling in hot ion mode plasmas

  • Eric Palmerduca
  • Hong Qin
  • Nathaniel J. Fisch
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Abstract

It is shown how evaporative cooling in hot plasma is essentially different from evaporative cooling in other media, such as neutral gases or Bose-Einstein condensates. The fundamental difference in plasmas arises both from the large mass ratio between electrons and ions in fully ionized plasma and the unusually sensitive dependence of plasma collisionality on speed. Thus, a hot ion mode plasma (Te < Ti) is shown to support a distinctive evaporative cooling regime, where a strong reduction in the ion evaporation rate appears. This new regime may have application to approaches to economical nuclear fusion, where the ion tail plays an outsized role in the fusion reaction rate.

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Cite

BibTeXRIS
BibTeX
@misc{palmerduca2026electrons,
  title = {{Electrons quench ion tails during evaporative cooling in hot ion mode plasmas}},
  author = {Eric Palmerduca and Hong Qin and Nathaniel J. Fisch},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.17402},
  eprint = {2609.17402},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.17402},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - UNPB
TI  - Electrons quench ion tails during evaporative cooling in hot ion mode plasmas
AU  - Eric Palmerduca
AU  - Hong Qin
AU  - Nathaniel J. Fisch
PY  - 2026
DA  - 2026/09/15
PB  - arXiv
DO  - 10.48550/arxiv.2609.17402
UR  - https://arxiv.org/abs/2609.17402
AB  - It is shown how evaporative cooling in hot plasma is essentially different from evaporative cooling in other media, such as neutral gases or Bose-Einstein condensates. The fundamental difference in plasmas arises both from the large mass ratio between electrons and ions in fully ionized plasma and the unusually sensitive dependence of plasma collisionality on speed. Thus, a hot ion mode plasma (T_e < T_i) is shown to support a distinctive evaporative cooling regime, where a strong reduction in the ion evaporation rate appears. This new regime may have application to approaches to economical nuclear fusion, where the ion tail plays an outsized role in the fusion reaction rate.
ER  -