The new isotope Th-208

J. A. Heredia*, A. N. Andreyev, S. Antalic, S. Hofmann, D. Ackermann, V. F. Comas, S. Heinz, F. P. Hessberger, B. Kindler, J. Khuyagbaatar, B. Lommel, R. Mann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The new neutron-deficient isotope Th-208 was produced in the complete-fusion reaction Ni-64 + Sm-147 -> Th-208 + 3n. Evaporation residues were separated in-flight by the velocity filter SHIP and subsequently identified on the basis of energy-, position- and time-correlated alpha-decay chains. The measured alpha-decay energy and half-life value of Th-208 are 8044(30) keV and 1.7(-0.6)(+1.7) , respectively. Improved data on the alpha-decay of Th-209, Th-210, Th-212 and Ra-208 were obtained using complete-fusion reactions of Ni-64 with Sm-147, Sm-150, and Sm-152 targets.

Original languageEnglish
Pages (from-to)337-343
Number of pages7
JournalEuropean physical journal A : Hadrons & Nuclei
Volume46
Issue number3
DOIs
Publication statusPublished - Dec 2010

Keywords

  • NUCLEAR
  • SPECTROSCOPY
  • SEPARATOR
  • SHIP
  • ALPHA-DECAY
  • ELEMENTS
  • U-238
  • FRAGMENTATION

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