α-decay spectroscopy of the new isotope At192

  • A. N. Andreyev
  • , Antalic
  • , Ackermann
  • , S. Franchoo
  • , Heßberger
  • , Hofmann
  • , M. Huyse
  • , Kojouharov
  • , Kindler
  • , Kuusiniemi
  • , S. R. Lesher
  • , Lommel
  • , Mann
  • , Münzenberg
  • , Nishio
  • , Page
  • , Ressler
  • , Streicher
  • , Saro
  • , Sulignano
  • P. Van Duppen, Wiseman

Research output: Contribution to journalArticlepeer-review

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Abstract

Decay properties of the new neutron-deficient nuclide At192 have been studied in the complete fusion reaction Sm144(V51,3n)At192 at the velocity filter SHIP. Two isomeric states with half-lives of 88(6) ms and 11.5(6) ms, respectively, and with complex α-decay schemes were identified in At192. The decay pattern of one of the isomers suggests that it is based on the oblate-deformed π2f7/2 ν1i13/2 configuration, which confirms the expected onset of deformation in the At isotopes by approaching the neutron midshell at N=104. © 2006 The American Physical Society.
Original languageEnglish
Article number024317
JournalPhysical Review C - Nuclear Physics
Volume73
Issue number2
DOIs
StatePublished - Mar 9 2006

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