Proportional Scintillation Results

• ZEPLIN 1

  • UKDMC/UCLA/Torino

• Tests performed at CERN (ICARUS)

  • S2/S1 = 0.3 for 5MeV alphas
  • S2/S1 = 3.0 for 120keV gammas

• 0.1% Overlap at 22keV

22 keV gamma source

mixed gamma/neutron source

neutron events

gamma events

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