1. Rempi-tof Group IV presentation: Frímann, Helgi, Long & Nanna

2. Rempi-tof • Resonance enhanced multi-photon ionization. • Spectroscopic tecnique applicable for atoms and small molecules • Accesses excited intermediate states • Two or three photon aborbance via LASER excitation • Rydberg states

3. (4) H+ + Cl H+ Cl+ (ii) (v) (vi) number of photons: HCl+ (3) H+ Cl* H*+Cl (iii) (iv) (i) (2) HCl* H+Cl- (2) (1)

4. Excimer Laser Pellin Broca prism SHG Dye- Laser out Time delay 200-1200 mS SHG control In HX laser control In út oscilloscope computer nozzle lense REMPI-TOF TOF Turbo Pump MCP detector Voltage devider HV -2Kv

5. SIMION simulation

7. TOF vs Mass

8. REMPI simulation

9. REMPI simulation

10. Results

11. H35Cl+ H+ 35Cl+ 37Cl+ H37Cl+ Impurity

14. E1S+(0+)(0,0) X1S+(0+) H37Cl+

15. E1S+(0+)(0,0) X1S+(0+) Q 7 6 5 4 3 2 1 0 O 35Cl+ 2 1 0 37Cl+

16. E1S+(0+)(0,0) X1S+(0+) Q 0 4 1 7 6 2 5 3 O 0 2 1 H+

17. Energy level