Germanium-gated γ–γ fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer

  • J.-M. Régis
  • , G.S. Simpson
  • , A. Blanc
  • , G. deFrance
  • , M. Jentschel
  • , U. Köster
  • , P. Mutti
  • , V. Paziy
  • , N. Saed-Samii
  • , T. Soldner
  • , C.A. Ur
  • , W. Urban
  • , Alison Bruce
  • , F. Drouet
  • , L.M. Fraile
  • , S. Ilieva
  • , J. Jolie
  • , W. Korten
  • , T. Kröll
  • , S. Lalkovski
  • H. Mach, N. Mărginean, G. Pascovici, Zs. Podolyak, Oliver Roberts, P.H. Regan, J.F. Smith, C. Townsley, A. Vancraeyenest, N. Warr

Research output: Contribution to journalArticlepeer-review

Abstract

A high-granularity mixed spectrometer consisting of high-resolution Ge and very fas tLaBr3(Ce)- scintillator detectors has been installed around a fission target at the cold-neutron guide PF1B of the high-flux reactor of the Institut Laue–Langevin. Lifetimes of excited states in the range of 10ps to10ns can be measured in around 100 exotic neutron-rich fission fragments using Ge-gated LaBr3(Ce)– LaBr3(Ce) or Ge–Ge–LaBr3(Ce)–LaBr3(Ce) coincidences. We report on various characteristics of the EXILL & FATIMA spectrometer for the energy range of 40 keV up to 6.8 MeV and present results of ps- lifetime test measurements in a fission fragment.The results are discussed with respect to possible systematic errors induced by background contributions.
Original languageEnglish
Pages (from-to)210-220
Number of pages11
JournalNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume763
DOIs
Publication statusPublished - 1 Nov 2014

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