Thermionic Cooling of the Target Plasma to a Sub-eV Temperature
Journal Article
·
· Physical Review Letters
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Contemporary models of bounded plasmas assume that the target plasma electron temperature far exceeds the temperature of the cold electrons emitted from the target, Temit. We show that when the sheath facing a collisional plasma becomes inverted, the target plasma electron temperature has to equal Temit even if the upstream plasma is hotter by orders of magnitude. This extreme cooling effect can alter the plasma properties and the heat transmission to thermionically emitting surfaces in many applications. It also opens a possibility of using thermionic divertor plates to induce detachment in tokamaks.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1512588
- Alternate ID(s):
- OSTI ID: 1490508
- Report Number(s):
- LLNL-JRNL-758661; PRLTAO; 946854
- Journal Information:
- Physical Review Letters, Vol. 122, Issue 1; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 19 works
Citation information provided by
Web of Science
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