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Group IV presentation: Frímann, Helgi, Long & Nanna.

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Presentation on theme: "Group IV presentation: Frímann, Helgi, Long & Nanna."— Presentation transcript:

1 Group IV presentation: Frímann, Helgi, Long & Nanna

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

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

5 IonMassFlight time [µs] H+H+ 10, Cl + 355,591 H 35 Cl + 365, Cl + 375,748 H 37 Cl + 385,826

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11 H+H+ 35 Cl + H 35 Cl + 37 Cl + H 37 Cl + Impurity

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14 H 37 Cl + E 1  + (0 + )(0,0)X 1  + (0 + )

15 O Q 35 Cl + 37 Cl + E 1  + (0 + )(0,0)X 1  + (0 + )

16 Q O H+H E 1  + (0 + )(0,0)X 1  + (0 + )

17 J X 1  + (0 + ) cm -1 E 1  + (0 + )(0,0) Energy level


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