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Comparison between Direct Mass Measurements and Determinations of Beta Endpoint Energies of Neutron Rich Rb and Cs Isotopes

  • H. Wollnik
  • F. Blönnigen
  • D. Rehfield
  • G. Jung
  • B. Pfeiffer
  • E. Koglin

Abstract

Recent direct mass measurements are compared to precise Qβ-values. The corresponding beta spectra were recorded with an intrinsic Ge-detector which was calibrated with conversion electrons from the BILL spectrometer. By the use of a magnetic pre-separation recently only the high energy portion of the beta spectrum was recorded. Thus count rate limitations of the beta detector were circumvented allowing the use of stronger β-sources and yielding beta spectra with essentially zero background.

Keywords

Daughter Nucleus Plastic Scintillator Neutron Rich Nucleus Mass Excess Tantalum Foil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • H. Wollnik
    • 1
  • F. Blönnigen
    • 1
  • D. Rehfield
    • 1
  • G. Jung
    • 1
  • B. Pfeiffer
    • 1
  • E. Koglin
    • 1
  1. 1.II. Physikalisches InstitutJustus Liebig-UhiversitätGiessenFederal Republic of Germany

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