Title of article :
Germanium-gated γ–γ fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer
Author/Authors :
Régis، نويسنده , , J.-M. and Simpson، نويسنده , , G.S. and Blanc، نويسنده , , A. and de France، نويسنده , , G. and Jentschel، نويسنده , , M. and K?ster، نويسنده , , U. and Mutti، نويسنده , , P. and Paziy، نويسنده , , V. and Saed-Samii، نويسنده , , N. and Soldner، نويسنده , , T. and Ur، نويسنده , , C.A. and Urban، نويسنده , , W. and Bruce، نويسنده , , A.M. and Drouet، نويسنده , , F. and Fraile، نويسنده , , L.M. and Ilieva، نويسنده , , S. and Jolie، نويسنده , , J. and Korten، نويسنده , , Stephen W. and Kroll، نويسنده , , T. and Lalkovski، نويسنده , , S. and Mach، نويسنده , , H. and M?rginean، نويسنده , , N. and Pascovici، نويسنده , , G. and Podolyak، نويسنده , , Zs. and Regan، نويسنده , , P.H. and Roberts، نويسنده , , O.J. and Smith، نويسنده , , J.F. and Townsley، نويسنده , , C. and Vancraeyenest، نويسنده , , A. and Warr، نويسنده , , N.، نويسنده ,
Pages :
11
From page :
210
To page :
220
Abstract :
A high-granularity mixed spectrometer consisting of high-resolution Ge and very fast LaBr3(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 10 ps to 10 ns 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.
Keywords :
Neutron capture gamma rays , Neutron induced fission , LaBr3(Ce) scintillators , Fast-timing arrays , Lifetime measurements , The GCD method
Journal title :
Astroparticle Physics
Record number :
2008813
Link To Document :
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