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. LalkovskiH. 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


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
Publication statusPublished - 1 Nov 2014


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