Search for unknown isotopes using the JAERI-ISOL

S. Ichikawa, K. Tsukada, M. Asai, A. Osa, Y. Oura, H. Iimura, Y. Kojima, T. Hirose, I. Nishinaka, Y. Hatsukawa, Y. Nagame, K. Kawade, T. Ohyama, K. Sueki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A search for unknown neutron-rich rare-earth isotopes and neutron-deficient americium isotopes was carried out using a gas-jet coupled thermal ion source installed in the JAERI on-line isotope separator (JAERI-ISOL). New isotopes 166Tb and 165Gd produced in the proton-induced fission of 238U were identified. The half-lives were 21 ± 6 s for 166Tb and 10.3 ± 1.6 s for 165Gd. Pu KX-rays associated with EC decays of americium isotopes produced in heavy-ion induced reactions were observed in the X/γ-ray spectra for the mass separated fraction of 237 and 236.

Original languageEnglish
Pages (from-to)205-208
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number1-4
Publication statusPublished - Apr 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


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