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Studies for Aluminum photo-ionization in hot cavity for the SPES Project

Studies for Aluminum photo-ionization in hot cavity for the SPES Project. Daniele Scarpa. The target ion source complex. Ion Source complex. Target complex. The TIS SPES Laboratories. HT LNL Lab. Test Bench LNL Lab. UCx Chemistry PADOVA Lab. Carbide Chemistry LNL Lab.

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Studies for Aluminum photo-ionization in hot cavity for the SPES Project

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  1. Studies for Aluminum photo-ionization in hot cavity for the SPES Project Daniele Scarpa

  2. The target ion source complex Ion Source complex Target complex

  3. The TIS SPES Laboratories HT LNL Lab Test Bench LNL Lab UCx Chemistry PADOVA Lab Carbide Chemistry LNL Lab Laser PAVIA Lab

  4. The target ion source complex Ion Source complex Target complex

  5. 1 2 H He 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 11 12 13 14 15 16 17 18 Na Mg Al Si P S Cl Ar 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 87 88 89 104 105 106 107 108 109 110 111 112 Fr Ra Ac Rf Db Sg Bh Hs Mt IONIZATION methods for SPES n-rich RIB’s (3 methods, 2 Ion sources) Elements with bad volatility (NOT EXTRACTED) Surface Ionization Method Surface Ion source Photo Ionization Method Laser beam Plasma Ionization Method Laser with SIS Main fission (p-> 238U) fragments Plasma Ion source

  6. Studies for Aluminum photo-ionization in hot cavity for the SPES project • Outline: • Aluminum • Pavia activities • LNL activities • Conclusion

  7. Studies for Aluminum photo-ionization in hot cavity for the SPES project Why Aluminum SPES has developed a SiC target tested at HRIBF in Oak Ridge Aluminum comes from (Si,p) nuclear interaction [1] Barbui et all. Nuclear Instruments and Methods in Physics Research B 266 (2008) 4289 – 4293

  8. Studies for Aluminum photo-ionization in hot cavity for the SPES project • Outline: • Aluminum • Pavia activities • LNL activities • Conclusion

  9. Studies for Aluminum photo-ionization in hot cavity for the SPES project Laboratories setups Pavia Laboratory 532 nm Tunable HCL Aluminum ND-YAG LPD3002 + SGH 308 nm 308 nm Focalization telescope SPES Hot Cavity LPX200 XeCl LPX200 XeCl LNL Laboratory

  10. Studies for Aluminum photo-ionization in hot cavity for the SPES project Testing Aluminum Laser Ionization: Hollow Cathode Lamp Optogalvanic effects are changes in the conductance of a gas discharge caused by absorption of light via a bound-ionization states transition in an atom or molecule in the discharge. Good & Simple Atoms Reservoir Very Suitable for Spectroscopic Investigations

  11. E2 Φ E1 E0 Studies for Aluminum photo-ionization in hot cavity for the SPES project Slow optogalvanic signal System goes to the new electronic states equilibrium after some microsec sharing the energy delivered by laser resonant photons

  12. E2 Φ E1 E0 Studies for Aluminum photo-ionization in hot cavity for the SPES project Fast optogalvanic signal System releases electrons immediately due to the direct photoionization

  13. λ λ Studies for Aluminum photo-ionization in hot cavity for the SPES project Aluminum selective laser ionization Two step, one color ionization path: Al [308.216;308.216 e−] Al+ Second step: Non – resonant towards continuum same wavelength λ =308,216 nm Typical transition linewidth First step: Resonant λ =308,216 nm

  14. Studies for Aluminum photo-ionization in hot cavity for the SPES project • Outline: • Aluminum • Pavia activities • LNL activities • Conclusion

  15. Studies for Aluminum photo-ionization in hot cavity for the SPES project Mass Maker Technique Aluminum evaporates and goes into hot cavity Oven tube loaded with Aluminum salts and heated by current

  16. Studies for Aluminum photo-ionization in hot cavity for the SPES project Laser beam delivery Laser beam shape study in order to focalize into hot cavity 3 mm diameter 6 m far away Laser safety study with Jesus Vasquez

  17. Laser ionization at SPES Ion beam vs laser beam (Top View) Ion Source – Hot Cavity Laser Beam Ion Beam Faraday Cup

  18. Laser ionization at SPES Ion beam delivery Faraday cup is off-center respect hot cavity and laser beam - Ion focused into the FC by the quadrupole

  19. Studies for Aluminum photo-ionization in hot cavity for the SPES project Ionization first results (Faraday Cup Current) Laser off Preliminary Laser On

  20. Studies for Aluminum photo-ionization in hot cavity for the SPES project Ionization resultsFaraday Cup Current @ several pulse energy and frequency 20 Hz ; 20 mJ per pulse Preliminary 20 Hz ; 12 mJ per pulse 12 Hz 50 Hz off 25 Hz

  21. Studies for Aluminum photo-ionization in hot cavity for the SPES project Conclusions: • Spectroscopic analysis of Al. • Front end alignment for laser ionization • First LNL measurements with laser on Aluminum • LNL Measure with Wien filter

  22. ThankYou

  23. ThankYou

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