Measurements of Sn Thermally Enhanced Sputtering Yields at Nano-PSI
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00647880" target="_blank" >RIV/61389021:_____/25:00647880 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s10894-025-00489-0" target="_blank" >https://link.springer.com/article/10.1007/s10894-025-00489-0</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10894-025-00489-0" target="_blank" >10.1007/s10894-025-00489-0</a>
Alternative languages
Result language
angličtina
Original language name
Measurements of Sn Thermally Enhanced Sputtering Yields at Nano-PSI
Original language description
Capillary porous structure (CPS) based liquid metal divertors are currently being investigated as a possible alternative to the tungsten based solid plasma facing components (PFCs). The ability of CPS based technologies to withstand high heat fluxes (> 20 MW/m<sup>2</sup>) has been already demonstrated in linear devices as well as tokamaks. One of the key aspects of a liquid metal divertor is the erosion of the liquid metal with the subsequent contamination of the plasma. The liquid can be eroded by physical sputtering, evaporation and thermally enhanced sputtering. The absence of a theoretical model or detailed empirical data of Sn thermally enhanced sputtering prohibits reliable predictions of Sn erosion by fusion plasma. Especially in high density tokamak plasmas, thermally enhanced sputtering appears to be the dominant contributor to total erosion. To empirically evaluate the thermally enhanced sputtering yields an experimental campaign was conducted at the Nano-PSI device (T<inf>e</inf> = 0.3–0.8 eV, Γi=5×1018m-2s-1) with Sn surfaces exposed to homogeneous plasma of various ion species (Ar, Ne, H, He). The effect of ion impact energy on the sputtering yields was studied as well by biasing of the the liquid surface in range of − 10 to − 80 V. In case of Ar, Ne and He the Sn was exposed as a free-flowing surface and for H it was exposed in a stainless-steel capillary porous structure (CPS) to negate the observed H spitting of the free liquid surface. This work presents the measured thermally enhanced sputtering yields, with focus on the observed phenomena, such as plasma species and impact energy dependency.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Fusion Energy
ISSN
0164-0313
e-ISSN
1572-9591
Volume of the periodical
44
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
18
UT code for WoS article
001444500400001
EID of the result in the Scopus database
2-s2.0-105000039851