% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@INPROCEEDINGS{Zakalek:1027079,
      author       = {Zakalek, Paul and Mauerhofer, Eric and Wakabayashi, Yasuo
                      and Ikeda, Yujiro and Otake, Yoshie},
      title        = {{T}ime-of-{F}light {P}rompt {G}amma {N}eutron {A}ctivation
                      {A}nalysis},
      reportid     = {FZJ-2024-03631},
      year         = {2024},
      abstract     = {Prompt Gamma Neutron Activation Analysis (PGNAA) is a
                      powerful technique to determinethe elemental compositions of
                      samples of various origins. It measures the emitted
                      promptgamma rays due to neutron capture which have an
                      isotope specific energy. The comparisonof the emission rate
                      of different gamma ray lines allows thus to determine the
                      concentrationin a homogenous sample very precisely. For
                      inhomogeneous samples the gamma line emissionrate depends on
                      the exact elemental distribution within the sample probed as
                      the neutronflux and therefore the gamma yield changes due to
                      neutron scattering and neutron absorption.A precise
                      determination of the elemental composition is thus not
                      possible for inhomogeneoussamples with classical PGNAA
                      methods. A way to improve PGNAA is to use the capabilitiesof
                      pulsed neutron sources which are becoming more common. As
                      neutrons with differentenergies probe different volumes
                      within a sample, the correlation of the neutron energy to
                      thetime resolved gamma spectra allows an indirect access to
                      depth resolved information of theelemental composition. By
                      extending PGNAA with a Time-of-Flight (TOF) option,
                      informationabout the homogeneity as well as depth resolved
                      elemental composition can be obtained.We will present OpenMC
                      simulations as well as an experimental investigation done
                      atthe RANS source in RIKEN [1]. We will show the results for
                      an idealized sample based ona layered structure where the
                      position of an inhomogeneity can be changed. The
                      simulationas well as the experiment show that it is possible
                      to access depth resolved information andthus improve the
                      determination of the elemental composition in an
                      inhomogeneous sample.References1. Y. Otake, et al.,
                      "Research and Development of a Non-destructive Inspection
                      Technique with aCompact Neutron Source", Journal of Disaster
                      Research Vol.12, No.3, (2017) pp.585–592.},
      month         = {May},
      date          = {2024-05-05},
      organization  = {International Conference on Modern
                       Trends in Activation Analysis, MERCURE
                       BUDA CASTLE HILL BUDAPEST (Hungary), 5
                       May 2024 - 10 May 2024},
      subtyp        = {Invited},
      cin          = {JCNS-2 / JCNS-HBS / JARA-FIT},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-HBS-20180709
                      / $I:(DE-82)080009_20140620$},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/1027079},
}