Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source

S. Ichikawa, M. Asai, K. Tsukada, A. Osa, T. Ikuta, N. Shinohara, H. Iimura, Y. Nagame, Y. Hatsukawa, I. Nishinaka, K. Kawade, H. Yamamoto, M. Shibata, Y. Kojima

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18 Citations (Scopus)

Abstract

A gas-jet coupled thermal ion source was installed in the isotope separator on line at the JAERI tandem accelerator. It was used for separation of neutron-rich isotopes produced in the reaction 238U(15 MeV-p, fission). The separation efficiencies of the whole system were measured to be 3.3% for 140Cs (T1/2 = 63.7 s), 2.0% for 144La (T1/2 = 40.8 s), 2.2% for 148Pr (T1/2 = 2.0 m), 1.2% for 156Pm (T1/2= 26.7 s) and 1.0% for 160Eu (T1/2 = 44 s). A long sticking time of La atoms on the ionizer surface gave a low efficiency of about 0.1% for 148La (T1/2 = 1.05 s). The first observation of a new isotope 166Tb was carried out using its monoxide ions from this ion source: T1/2(166Tb) = 21±6 s.

Original languageEnglish
Pages (from-to)330-334
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume374
Issue number3
DOIs
Publication statusPublished - Jun 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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