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Title: An RF-only ion-funnel for extraction from high-pressure gases

An RF ion-funnel technique has been developed to extract ions from a high-pressure (10 bar) noble-gas environment into a vacuum (10-6 mbar). Detailed simulations have been performed and a prototype has been developed for the purpose of extracting 136Ba ions from Xe gas with high efficiency. With this prototype, ions have been extracted for the first time from high-pressure xenon gas and argon gas. Systematic studies have been carried out and compared to simulations. This demonstration of extraction of ions, with mass comparable to that of the gas generating the high-pressure, has applications to Ba tagging from a Xe-gas time-projection chamber for double-beta decay, as well as to the general problem of recovering trace amounts of an ionized element in a heavy (m > 40 u) carrier gas.
Authors:
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  1. Stanford Univ., CA (United States). Dept. of Physics
  2. Inst. for Theoretical and Experimental Physics, Moscow (Russia); Facility for Antiproton and Ion Research in Europe (FAIR GmbH), Darmstadt (Germany)
  3. TRIUMF, Vancouver, BC (Canada)
  4. Stanford Univ., CA (United States). Dept. of Physics; Carleton Univ., Ottawa, ON (Canada). Dept. of Physics
  5. Colorado State Univ., Fort Collins, CO (United States). Physics Dept.
  6. Indiana Univ., Bloomington, IN (United States). Physics Dept. and CEEM
  7. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
  8. Duke Univ., Durham, NC (United States). Triangle Universities Nuclear Lab. (TUNL), Dept. of Physics
  9. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Physics
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  11. Inst. of High Energy Physics, Beijing (China)
  12. Laurentian Univ., Sudbury, ON (Canad). Dept. of Physics
  13. Drexel Univ., Philadelphia, PA (United States). Dept. of Physics
  14. Carleton Univ., Ottawa, ON (Canada). Dept. of Physics
  15. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  16. Technische Univ. Munchen, Garching (Germany). Dept. Physik
  17. Univ. of Bern, Bern (Switzerland). LHEP, Albert Einstein Center
  18. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  19. Univ. of Massachusetts, Amherst, MA (United States). Amherst Center for Fundamental Interactions and Physics Dept.
  20. Inst. for Theoretical and Experimental Physics, Moscow (Russia)
  21. Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
  22. Univ. of Seoul, Seoul (Republic of Korea). Dept. of Physics
  23. Univ. of South Dakota, Vermillion, SD (United States). Dept. of Physics
Publication Date:
OSTI Identifier:
1325463
Grant/Contract Number:
AC05-00OR22725; PHY-0918469; RFBR 14-22-03028
Type:
Accepted Manuscript
Journal Name:
International Journal of Mass Spectrometry
Additional Journal Information:
Journal Volume: 379; Journal Issue: C; Journal ID: ISSN 1387-3806
Publisher:
Elsevier
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE; NSF; Russian Federation
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS RF-funnel; Gas dynamic and ion trajectory; simulations; Gas jet; Xe-136 double-beta decay; Ba tagging; Ion transport