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Guided transmission of highly charged ions through capillaries in a polymer

Guided transmission of highly charged ions through capillaries in a polymer. R. Hellhammer, J. Bundesmann, D. Fink, V. Hoffmann, A. Petrov, Z. D. Pešić, V.A.Skuratov * ,B. Sulik + and N. Stolterfoht Hahn-Meitner-Institut Berlin, Germany

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Guided transmission of highly charged ions through capillaries in a polymer

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  1. Guided transmission of highly charged ions through capillaries in a polymer R. Hellhammer, J. Bundesmann, D. Fink, V. Hoffmann, A. Petrov, Z. D. Pešić, V.A.Skuratov* ,B. Sulik+ and N. Stolterfoht Hahn-Meitner-Institut Berlin, Germany + Institute of Nuclear Research (ATOMKI), Debrecen, Hungary *Joint Institute for Nuclear Research, Dubna, Russia

  2. Basics of the Capillaries The Low-Energy Ion Facility at the Ionenstrahllabor ( HMI ) Surprising results and the model for guiding High-Energy limit Summary and outlook Overview

  3. Basics of the capillaries AFM-Picture of the etched PET-Foils with uncovered surface PET: Polyethylen terephtalate

  4. Basics of the capillaries AFM-Picture of the etched PET-Foils with uncovered surface SEM-Picture of covered PET surface with nanocapillaries PET: Polyethylen terephtalate

  5. The Low-Energy Ion Facility at the Ionenstrahllabor ( HMI ) potential of ECR source : 0 to +17 kV 4 target places on GND-potential potential of beamline: 0 to -17 kV Beam production and beam transport

  6. The Low-Energy Ion Facility at the Ionenstrahllabor ( HMI ) potential of ECR source : 0 to +17 kV 4 target places on GND-potential potential of beamline: 0 to -17 kV Beam production and beam transport Layout of the target chamber

  7. Geometry

  8. Charge state distribution of ions transmitted through PET-Capillaries

  9. Charge state distribution of ions transmitted through PET-Capillaries

  10. Evidence for Capillary Guiding Angular distribution of Ne7+-Ions after passage through metallic capillaries at tilt angle of 0°

  11. Evidence for Capillary Guiding Angular distribution of Ne7+-Ions after passage through metallic capillaries at tilt angle of 0° and 5°

  12. Evidence for Capillary Guiding Angular distribution of Ne7+-Ions after passage through PET capillaries at tilt angle of 0° Angular distribution of Ne7+-Ions after passage through metallic capillaries at tilt angles of 0° and 5°

  13. Evidence for Capillary Guiding Angular distribution of Ne7+-Ions after passage through PET capillaries at tilt angles of 0° and 5° Angular distribution of Ne7+-Ions after passage through metallic capillaries at tilt angles of 0° and 5°

  14. Evidence for Capillary Guiding

  15. Diameter dependencies Difference in angular distribution for different diameters

  16. The model for Capillary Guiding

  17. The model for Capillary Guiding Linear model : Propagation: Jp=Q(t)/tp Discharging: Jd=Q(t)/td

  18. Time dependence of charging and discharging in PET-Capillaries Charging parameters: I=1nA ==10° Cap=100 nm c= 2.5 min 10 40

  19. Time dependence of charging and discharging in PET-Capillaries Charging : I=1nA ==10° Cap=100 nm c= 2.5 min Discharging: d= 40 min 10 40

  20. High-Energy-limit Energy dependence for 5° tilt angle

  21. High-Energy-limit Energy dependence for 5° tilt angle

  22. High-Energy-limit Energy dependence for 5° tilt angle

  23. High-Energy-limit Energy dependence for 5° tilt angle

  24. Outlook • Macroscopic Focusing : • Irradiate a foil bended over a • cylinder or a sphere Macroscopic Focusing The idea to use a capillary foil as a focusing element

  25. Outlook • Macroscopic Focusing : • Irradiate a foil bended over a • cylinder or a sphere • the smoothed foil will give the • focus Macroscopic Focusing The idea to use a capillary foil as a focusing element

  26. Outlook • Macroscopic Focusing : • Irradiate a foil bended over a • cylinder or a sphere • the smoothed foil will give the • focus • Mesoscopic Focusing : • Irradiate a flat foil • Press the irradiated and etched • foil on a matrix with mesoscopic • spheres or cylinders and stabilize • this geometry Macroscopic Focusing Mesoscopic Focusing The idea to use a capillary foil as a focusing element

  27. Outlook Macroscopic Focusing Mesoscopic Focusing The technicalrealization for macroscopic focusing The idea to use a capillary foil as a focusing element

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