Development of a thermal ionizer as ion catcher

E. Traykov, U. Dammalapati, S. De, O. C. Dermois, L. Huisman, K. Jungmann, W. Kruithof, A. J. Mol, C. J.G. Onderwater, A. Rogachevskiy, M. da Silva e Silva, M. Sohani, O. Versolato, L. Willmann, H. W. Wilschut

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


An effective ion catcher is an important part of a radioactive beam facility that is based on in-flight production. The catcher stops fast radioactive products and emits them as singly charged slow ions. Current ion catchers are based on stopping in He and H2 gas. However, with increasing intensity of the secondary beam the amount of ion-electron pairs created eventually prevents the electromagnetic extraction of the radioactive ions from the gas cell. In contrast, such limitations are not present in thermal ionizers used with the ISOL production technique. Therefore, at least for alkaline and alkaline earth elements, a thermal ionizer should then be preferred. An important use of the TRIμP facility will be for precision measurements using atom traps. Atom trapping is particularly possible for alkaline and alkaline earth isotopes. The facility can produce up to 109 s-1 of various Na isotopes with the in-flight method. Therefore, we have built and tested a thermal ionizer. An overview of the operation, design, construction, and commissioning of the thermal ionizer for TRIμP will be presented along with first results for 20Na and 21Na.

Original languageEnglish
Pages (from-to)4478-4482
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number19-20
Publication statusPublished - 2008 Oct
Externally publishedYes


  • Diffusion
  • Hot cavity
  • Ion catcher
  • Ion source
  • Ionization
  • Radioactive ion beam
  • Slowing of ions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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