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Zeitschrift für Physik A Atomic Nuclei

, Volume 328, Issue 4, pp 417–422 | Cite as

New nuclides: Neptunium-243 and neptunium-244

  • K. J. Moody
  • W. Brüchle
  • M. Brügger
  • H. Gäggeler
  • B. Haefner
  • M. Schädel
  • K. Sümmerer
  • H. Tetzlaff
  • G. Herrmann
  • N. Kaffrell
  • J. V. Kratz
  • J. Rogowski
  • N. Trautmann
  • M. Skålberg
  • G. Skarnemark
  • J. Alstad
  • M. M. Fowler
Article

Abstract

We have observedγ-rays following the β-decay of243Np and244Np after chemical isolation of neptunium isotopes from the products of the reaction of 835 MeV136Xe with244Pu. The ground-state of 1.85-min243Np hasJ=5/2. The decay of 2.29-min244Np (probableJπ=7) populates high-spin members of the ground state rotational band in244Pu.

PACS

23.40.-s 27.90. + b 

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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • K. J. Moody
    • 1
  • W. Brüchle
    • 1
  • M. Brügger
    • 1
  • H. Gäggeler
    • 1
  • B. Haefner
    • 1
  • M. Schädel
    • 1
  • K. Sümmerer
    • 1
  • H. Tetzlaff
    • 2
  • G. Herrmann
    • 2
  • N. Kaffrell
    • 2
  • J. V. Kratz
    • 2
  • J. Rogowski
    • 2
  • N. Trautmann
    • 2
  • M. Skålberg
    • 3
  • G. Skarnemark
    • 3
  • J. Alstad
    • 4
  • M. M. Fowler
    • 5
  1. 1.Gesellschaft für SchwerionenforschungDarmstadtFederal Republic of Germany
  2. 2.Institut für KernchemieUniversität MainzFederal Republic of Germany
  3. 3.Department of Nuclear ChemistryChalmers University of TechnologyGöteborgSweden
  4. 4.Department of ChemistryUniversity of OsloNorway
  5. 5.Los Alamos National LaboratoryLos AlamosUSA

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