مؤتمر
The Generalized Centroid Difference method for lifetime mesaurements via $\gamma$-$\gamma$ coincidences using large fast-timing arrays
| العنوان: | The Generalized Centroid Difference method for lifetime mesaurements via $\gamma$-$\gamma$ coincidences using large fast-timing arrays |
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| المؤلفون: | Régis, J.-M., Jolie, J., Mach, H., Simpson, G.S., Blazhev, A., Pascovici, G., Pfeiffer, M., Rudigier, M., Samii, N. Saed-, Blanc, A., de France, G., Jentschel, M., Köster, U., Mutti, P., Soldner, T., Ur, C.A., Urban, W., Bruce, A.M., Drouet, F., Fraile, L.M., Ilieva, S., Korten, W., Kröll, T., Lalkovski, S., M˘arginean, N., Paziy, V., Podolyák, Zs., Regan, P.H., Stezowski, O., Vancraeyenest, A. |
| المساهمون: | Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | EPJ Web of Conferences ; Fifteenth International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS15) ; https://hal.in2p3.fr/in2p3-01077155Test ; Fifteenth International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS15), Aug 2014, Dresden, Germany. pp.01013, ⟨10.1051/epjconf/20159301013⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2014 |
| المجموعة: | HAL Lyon 1 (University Claude Bernard Lyon 1) |
| مصطلحات موضوعية: | [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] |
| جغرافية الموضوع: | Dresden, Germany |
| الوصف: | This is an Open Access article distributed under the terms of the Creative Common Attribution Licence 4.0 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ; International audience ; A novel method for direct electronic "fast-timing" lifetime measurements of nuclear excited statesvia γ-γ coincidences using an array equipped with N very fast high-resolution LaBr3(Ce) scintillator detectorsis presented. The generalized centroid difference method provides two independent “start” and “stop” timespectra obtained without any correction by a superposition of the N(N − 1)/2 calibrated γ-γ time differencespectra of the N detector fast-timing system. The two fast-timing array time spectra correspond to a forwardand reverse gating of a specific γ-γ cascade and the centroid difference as the time shift between the centroidsof the two time spectra provides a picosecond-sensitive mirror-symmetric observable of the set-up. The energydependentmean prompt response difference between the start and stop events is calibrated and used as a singlecorrection for lifetime determination. These combined fast-timing array mean γ-γ zero-time responses can bedetermined for 40 keV < Eγ < 1.4 MeV with a precision better than 10 ps using a 152Eu γ-ray source. Thenew method is described with examples of (n,γ) and (n,f,γ) experiments performed at the intense cold-neutronbeam facility PF1B of the Institut Laue-Langevin in Grenoble, France, using 16 LaBr3(Ce) detectors withinthe EXILL&FATIMA campaign in 2013. The results are discussed with respect to possible systematic errorsinduced by background contributions. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| العلاقة: | in2p3-01077155; https://hal.in2p3.fr/in2p3-01077155Test |
| DOI: | 10.1051/epjconf/20159301013 |
| الإتاحة: | https://doi.org/10.1051/epjconf/20159301013Test https://hal.in2p3.fr/in2p3-01077155Test |
| رقم الانضمام: | edsbas.57549E34 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1051/epjconf/20159301013 |
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