[institut] Photonics Center Seminar, Wednesday, 17.12.2025. at 12h

[Mihailo Rabasovic]

Dear colleagues,


You are kindly invited to the Photonics center seminar, which will be 
held on Wednesday, 17.12.2025. at 12h, in the "Dragan Popović" hall. The 
Plasma Spectroscopy and Lasers Laboratory (http://psl-lab.ipb.ac.rs/) 
will be presented at the seminar. Biljana Stankov will tell us something 
about the lab, and then Nikola Vujadinović will give a seminar entitled:

Resolving Hydrogen Isotope Spectral Lines

The seminar abstract is below in the e-mail. Also, as the end of the 
year approaches, this will be a good opportunity to hear what has been 
done at the Center during this year, chat, and celebrate.


Best regards,
Mihailo Rabasović



Abstract. The analysis of tritium retention in plasma-facing components 
(PFCs) in fusion devices is of utmost importance for ensuring safe and 
efficient operation. When performing optical emission spectroscopic 
analyses of PFC content, resolving deuterium (Dα) and tritium (Tα) 
Balmer alpha lines presents a major challenge. Most research so far has 
focused on laser-induced breakdown spectroscopy (LIBS), but its 
usefulness is limited by excessive Stark broadening due to high electron 
densities of LIBS plasmas. In this talk, I will discuss the use of 
microwave-induced plasma (MIP) as a potential solution to this problem. 
Material from the target is introduced into the MIP at low pressure via 
laser-induced desorption (LID) and laser ablation (LA). The light 
emitted from the MIP is collected and guided to a high-resolution 
spectrometer equipped with an ICCD camera. The obtained results suggest 
that, with this setup, the lowest detectable tritium level corresponds 
to a Tα line intensity of 20–50 % of the Dα line intensity.