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Nikola and Ivan participated at BPU 12 conference
12th International Congress of the Balkan Physical Union (BPU 12) was held at National University of Science and Technology POLITEHNICA in Bucharest, Romania from 8th to 12th July 2025. Nikola and Ivan participated with a poster entitled Detection of Hydrogen Isotopes In Fusion-Relevant Targets with Laser Ablation and Microwave-Induced Plasma which is the joint work with colleagues from Low Temperature Plasma Laboratory at National Institute for Laser Plasma and Radiation Physics (INFLPR), Romania and Vinca Institute of Nuclear Sciences. Here Nikola presented part of his results obtained in pursue of his PhD thesis. Also, Nikola achieved the award for one of best 20 posters presented at the conference. The abstract of the poster is:
The analysis of plasma facing components (PFCs) of fusion machines using LIBS technique is widely distributed in fusion community. Difficulties arise when the spectroscopic measurements of tritium retention are performed, especially the problem of resolving deuterium (Dα) and tritium (Tα) Balmer alpha lines become a major issue. Therefore, this study exploits the usage of microwave induced plasma (MIP) as a potential solution for the aforementioned problem. The material of the target is introduced into MIP with laser ablation using Nd:YAG laser, and spectral signal is monitored with high resolution spectrometer and ICCD camera. Two silicon-based targets were utilized for these studies. The first target, coated with carbon (C) and methane (CH4), was used for optimization of the measurement system, whereas the second target, coated with C and deuterium (D), was used for final measurements. As a part of the optimization process, ablation rate and crater profiles were studied with an optical profilometer. The final measurement results indicate that, with the current setup, the lowest detectable tritium level would correspond to a Tα line intensity between 30% and 50% of the Dα line intensity. This setup shows a promising tool for this type of analysis, providing reliable and fast determination of tritium content that has been retained in the material.
Milica gave an invited lecture at ICSQE2024 conference
The International Conference and School on Quantum Electronics: “Laser Physics and Applications” (ICSQE 2024) was held from 23rd – 27th March in Ravda, Bulgaria. Milica was invited to give an invited lecture on her work on diagnostics of Laser Induced Plasma from thin oil film. The talk was entitled Laser-induced Breakdown Spectroscopy for direct determination of heavy metals in oils.
SPIG 2024
Ivke, Biljana, Neša, Milica, Ivan and Nikola participated in 32nd Symposium of Physics of Ionized Gases (SPIG 2024), held in Belgrade at the Serbian Academy of Sciences and Art. Ivke was member of the Scientific Committee for the sixth consecutive time. Ivan was in the Ogranizing Committee, while Bilja served as the co – secretary of the conference.
During the final day of the conference, Ivan gave a progress report lecture entitled “Application of Machine Learning and Artificial Intelligence in Plasma Spectroscopy“.
At the poster presentation part of the conference, Biljana presented the poster entitled “Fast Photography in the Service of Spatially and Temporally Resolved LIBS Diagnostics of Doped Tungsten”, while Ivan presented the posters entitled “Detection of Rhenium in Tungsten Using LIBS with Additional Fast Pulse Discharge” and “Influence of the Ablation Angle Change on Spectral Line Intensities in LIBS Experiments“. Apart from this, we also presented, or participated in the following posters:
Target Selection for LIBS Studies of Hydrogen Isotope Retention – Dragan Ranković, Biljana Stankov, Ivan Traparić, Miroslav Kuzmanović and Milivoje Ivković
During the conference, we also had a pleasure of hosting our friend and collaborator Dr. Chihiro Suzuki – san from NIFS Japan, who gave a talk entitled “Comprehensive Z-dependence Analysis of Soft X-ray Spectra from Highly Charged Heavy Ions Using Magnetically Confined High-temperature Plasmas“.
Ivan participated in the ICSLS 2024 conference
The ICSLS 2024 conference was held in Japan from 2nd to 7th June at Prefectural Budokan in Otsu. Ivan took part at this conference, where he had two posters. One poster was about the joint work with LHD colleagues on the application of generative artificial intelligence in modeling of emitted tungsten UTA structure in EUV spectral range. The second poster was the presentation of NOVA2LIBS4fusion project results regarding the study of separation of hydrogen and deuterium spectral lines relevant for tritium retention studies.
Finally, he also had the honor of visiting the NIFS facility in Toki. Here, he held a seminar about the results disseminated at the conference, and also took a tour of LHD device that is in operation at NIFS.
Milica gave a lecture on 17th Photonics Workshop
17th Photonics Workshop was held from 10th – 14th March at the Ski Resort Kopaonik. Milica was invited to give a lecture on her work on diagnostics of Laser Induced Plasma from thin oil film. The talk was entitled Diagnostics of laser-induced plasma from a thin oil film.
Milica presented the results from her PhD thesis on IX International School and Conference on Photonics
IX International School and Conference on Photonics was held in Belgrade from 28th August to 1st September. Milica was invited to give a progress report on her work on application of LIBS in determination of trace metals in oils. The talk was entitled Application of laser-induced breakdown spectroscopy for the determination of trace metals in oils.
Ivan presented part of his PhD thesis work on 14th SCSLSA
14th SCSLSA was held in Bajna Bašta from 19th to 23rd June. Ivan was invited to give a progress report on his wok on application of Machine Learning algorithms on the determination of Stark Broadening line widths. The talk was entitled Stark Broadening Modeling with ML and AI Algorithms and abstract is given below. 
During past 20 years many Stark broadening models were developed that can calculate spectral lineshape and estimate a line width that is extensively used in plasma diagnostics of both astrophysical and laboratory plasmas. Some of these calculations yield results relatively fast, some of them need a lot of computational time. Therefore, idea of creating a machine learning (ML) model emerged as a tool for fast estimation of Stark width without need of huge computational time. In our approach, out of three tested models, random forest (RF) algorithm showed the best predictive power after it has been trained, where the coefficient of determination R2 = 0.94 was obtained. Model was trained on a database created by merging parameters from Stark B and NIST atomic databases, it had 14 input parameters that were used to predict final Stark width. Results were compared with experimental ones as well as with SCP theory. We also checked for regularities in Stark effect, and they were also confirmed and in agreement with previous findings.
Ivan participated at SLSP6
Ivan took participation at 6th Spectral Line Shapes in Plasma Workshop (SLSP6) where he held 15 minute lecture entitled Stark Broadening Modeling with ML Algorithms, in which he presented his recent work on application of machine learning algorithms for modeling of Stark spectral line broadening.
SPIG 2022
Ivke, Biljana, Neša, Milica and Ivan participated in 31th Symposium of Physics of Ionized Gases (SPIG 2022), held in Belgrade at the Serbian Academy of Sciences and Art. The conference was organized in hybrid format, part of the lectures was online and the other part was on site. Ivke was member of the Scientific Committee for the fifth consecutive time. Neša was in the Ogranizing Committee.
At the poster presentation part of the conference, Biljana presented the poster entitled “Spectroscopic characterization of laser-induced plasma on doped tungsten“, while Ivan presented the poster entitled “Elemental analysis of austenitic steel by calibration-free laser-induced breakdown spectroscopy (CF-LIBS)“. Apart from this, we also presented, or participated in the following posters:
Self-mixing interferometry for plasma diagnostics – Nikola Goleš, Neda Babucić, Nenad M. Sakan and Milivoje Ivković
Application of artificial neural network in the analysis of the spectra from laser ablation combined with fast pulse discharge – Nenad M. Sakan, Milica L. Vinić, Vladimir A. Srećković, Ivan Traparić, and Milivoje R. Ivković
Modeling of Stark spectral line broadening by machine learning algorithms – Irinel Tapalaga, Ivan Traparić, Nora Trklja Boca, Jagoš Purić and Ivan P. Dojčinović
LIBS 2022 Bari
Ivke, along side with prof. Miroslav Kuzmanović and prof. Jelena Savović participated at international LIBS 2022 conference held in Bari to present recent results obtained through the project IDEAS, financed by Science Fund of the Republic of Serbia.
Ivke presented a poster entitled LIBS analysis of tungsten – copper alloys while prof. Savović held the invited talk entitled Relevance of mid-infrared laser as an excitation source for a variety of LIBS applications.
