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Excimer Laser. Pellin Broca prism. SHG. Dye- Laser. out. Time delay 200-1200 m S. SHG control. In. HX. laser control. In. út. oscilloscope. computer. nozzle. lense. REMPI-TOF. TOF. Turbo Pump. MCP detector. Voltage devider. HV - 2Kv. LASER radiation of C 2 H 2. Ion

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  1. 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

  2. LASER radiation of C2H2 Ion yield C2H2+ C+ C2+ H+ Magn jóna C2H+ CH+ CH2+ Mw Time of flight

  3. HCCH*: Orka HCCH:

  4. + + C2 C2 H2 Orka HCCH*:

  5. Orka HCCH*:

  6. C CH2 Orka HCCH*:

  7. LASER radiation of C2H2 Ion yield C2H2+ C+ C2+ H+ Magn jóna CH+ C2H+ CH2+ Mw Time of flight

  8. Big Organic molecules Interstellar space C2H2 ??? : Life(?)

  9. Interstellar space C2H2 ??? C CH2 C2 Big Organic molecules : Life(?)

  10. 2 AB+ + e AB** 1xhn 2xhn 3xhn nxhn AB E REMPI = Resonance Enhanced MultiPhoton Ionization Resonance excitation to high energy states of neutral species, followed by photon ionization; For example:

  11. Intensity Mass spectrum RCl = HCl H35Cl+ H+ Two photon resonance excitation= 82842.36 cm-1 35Cl+ H37Cl+ 12C+ 1 12 35 Mw

  12. H+ H35Cl+ 35Cl+ H37Cl+ Two photon excitation / cm-1 Ion yield REMPI- spectrum Mw / rel. cm-1

  13. 35Cl+ H35Cl+ 37Cl+ Mw H37Cl+ 2xhv H35Cl+ H37Cl+ 35Cl+ /cm-1 Mw / rel.

  14. H37Cl+ 2xhv 37Cl+ /cm-1 H35Cl+ 35Cl+ Mw /amu H+

  15. 2xhv/cm-1 H35Cl+ H37Cl+ H+ 35Cl+ 37Cl+ Mw/amu

  16. (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)

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