1. Winfred Stoffels STOOR

2. Plasma research at the group EPG Winfred Stoffels

3. Winfred Stoffels STOOR EPG: Reseach Aim: Understanding of technological plasmas Approach: Systematic combination of polydiagnostic experimental work with (numerical) plasmamodels `

4. Winfred Stoffels STOOR What is a plasma? Ionised gas (by electricity, radiation, chemical energy, heat, etc.) Source of: - energy - ions - radicals - light A +, B -, e, radicals +-

5. Winfred Stoffels STOOR EPG: Themes Plasma treatment of living tissues Corona & pulsed discharges Material science (rf and microwave, complex plasmas) Extreme plasmas (EUV, laser wake field, hydrogen) Light

6. Winfred Stoffels STOOR EPG: people Groupleader: Gerrit Kroesen Scientific staff: 5 Part time professor: 2 Technical support: 4 Postdocs: ~3 PhD students: ~15 (under)graduates/visitors: varying

7. Winfred Stoffels STOOR Corona Eddie van Veldhuizen, Sander Nijdam, Tanja Briels

8. Winfred Stoffels STOOR Plasma treatment of living tissues (Eva Stoffels, Roxana Tipa)

9. Winfred Stoffels STOOR Complex plasmas Winfred Stoffels, Job Beckers

10. Winfred Stoffels STOOR EUV plasmas Joost van der Mullen, ASML

11. Winfred Stoffels STOOR Light Winfred Stoffels, Philips  Tanya Nimalasuriya, Mark Beks, Arjan Flikweert: Segregation and modeling of Metal halide lamps (ISS, centrifuge)  Hjalmar Mulders: molecular lamps  Ana Sobota: ignition of HID lamps

12. Winfred Stoffels STOOR Plasma diagnostics Electrons: Thomson (ne, Te) absolute line intensity & Bolzmann/Saha (ne, Te,LTE) microwave resonance langmuir probes Ions: massa spectrometry Doppler resolved LIF (IEDF) langmuir probes (ni,Ti) absolute line intensity &Saha/Bolzmann (ni, Ti,LTE) laser induced photo-detachment (neg ionen)

13. Winfred Stoffels STOOR Plasma diagnostics Atoms & chemistry : absolute line intensity & Bolzmann/Saha (ne, Te,LTE) laser absorptiom (atom/molecules ) FTIR (molecule chemistry) LIF XRA/XRF ellipsometry (surface chemistry) E-field: Stark splitting/shifting of Rydberg states (E-field) probes (potential) Dynamisch behavior: sub-ns cameras I-V metingen

14. Winfred Stoffels STOOR Plasma model (Jan van Dijk) modular numerical plasma model (2D  3D) particle and energy balance elementary processes gas flow (convection-diffusion) radiation energy coupling (dc, rf, microwave) dynamic behavior LTE & non-LTE

15. Winfred Stoffels STOOR Traineeships Experimental, numerical or combined work on technological plasmas External traineeships: Philips, ASML, OCE, foreign university Mostly together with a PhD student and staff member

16. Winfred Stoffels STOOR After graduation at EPG ~50% PhD study at EPG, PMP or other groups ~50% industrial R&D Philips ASML other companies

17. Winfred Stoffels STOOR Welcome at EPG N laag Second floor C wing (above first year practicum)