RF Ionguide Home

News

  • New Record and In-line extraction, max yield 26kcps
  • New World Record (Overall Efficiency of 1%) was achived
  • "plasma effect" in 10^6 aps RI beam was observed
  • An overall efficiency of 10^-3 was achieved in collecting Li8 (Oct.02,2001)
  • New large gas cell was installed (Sept.30,2001)
  • Energetic Li-8 ions from RIPS were collected by RF-ion guide (May 2001, July 2001)

    • Documents

  • HCI04 (Feb. 2004) Presentation PDF
  • Cool03 (May. 2003) Proceedings PDF
  • LEAP03 (April 2003) Proceedings PDF
  • EMIS-14 (May. 2002) Presentation PDF 9.2M Draft ProceedingsText pdf 224k Figures pdf 1.8M
  • TRIUMF TRAP WORKSHOP (Apr. 2002) Presentation PDF 8.8M
  • RIKEN Accelerator Prog. Rep. (Nov., 2001) PDF 808k
  • Italy-Japan Joint Meeting (Abstract:PDF79k)
  • IGISOL-8 Workshop (Chicago, Aug 2001) Selected OHP PDFxxk
  • NNP2001 (San Diego, July 2001) (Proceedings: PDF 767k) AIC CP606 "Non-neutral plasma physics IV", eds. F.Anderegg et al, P625-633
  • IGISOL-7 (Mainz, 1999) abstract
  • IGISOL-6 (Dubna, 1997) abstract

    • Related Articles

  • "Precision spectroscopy of the Zeeman splittings of the 9Be 2^2S_1/2 hyperfine structure for nuclear structure studies",Opt. Comm. 205 82002) 329
  • "Minimization of Trapped Ion Loss with a Cryogenic Linear Ion Trap",JJAP 40(2001)4221
  • "Accumulation of ions from a recoil mass separator in a new type of linear ion trap", NIM B126 (1997)386 preprint
  • "A new cooling and focusing device for ion guide", NIM A333 (1993)274

    • Links

  • a

    • Atomic Physics Laboratory Home
    Although the projectile fragment separator (RIPS) at the RIKEN accelerator facility (RARF) provides wide variety of energetic radioactive beams, it is not adequate for low energy beam experiments such as precision spectroscopy of trapped ions. Aiming for an efficient deceleration and cooling of energetic radioactive ions, the development of an rf ion guide system which comprises a large He gas cell and an rf funnel structure in the cell is under progress.

    Current Topics

    Beam-time of Nov 2003(With SPIG Extraction Device)

    SPIG (2.5mm-inner-dia) and 1st skimmer

    A 10 years-old SPIG-holder (Macor) was used for the present test exp.

    Recent Result on Collection of Li-8 Ions

    Recent beam time (July 15th- )

    Cu cylinder installed in the gas cell. Linear DC field is produced by electrodes on printed circuit boards mounted in the Cu cylinder. "Bug's steps" in the cylinder are voltage dividing resisters.

    Latest Yield and Efficiency with in-line extraction