Transport and extraction of radioactive ions stopped in superfluid helium

W. X. Huang*, P. Dendooven, K. Gloos, N. Takahashi, K. Arutyunov, J. P. Pekola, J. Äystö

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

A new approach to convert a high energy beam to a low energy one, which is essential for the next generation radioactive ion beam facilities, has been proposed and tested at Jyväskylä, Finland. An open 223Ra alpha-decay-recoil source has been used to produce radioactive ions in superfluid helium. The alpha spectra demonstrate that the recoiling 219Rn ions have been extracted out of liquid helium. This first observation of the extraction of heavy positive ions across the superfluid helium surface was possible thanks to the high sensitivity of radioactivity detection. An efficiency of 36% was obtained for the ion extraction out of liquid helium.

Original languageEnglish
Pages (from-to)592-596
Number of pages5
JournalNUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION B: BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume204
DOIs
Publication statusPublished - May 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • Radioactive ion beam
  • Snowball
  • Superfluid helium

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