Talk (non-conference) (Invited)

FZJ-2023-00933

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Time-of-Flight Prompt Gamma Neutron Activation Analysis

Zakalek, P. (Corresponding author)FZJ*

2023

Abstract: Prompt Gamma Neutron Activation Analysis (PGNAA) is an important technique for determining the presence of elements in unknown samples. The PGNAA technique measures the emitted prompt gammas from neutron capture of a target nuclei. The emitted prompt gammas have an energy which is element specific enabling to determine precisely the concentration of these elements for homogeneous samples. For inhomogeneous samples, the concentration determination has a large uncertainty due to the position dependent neutron flux in a sample.The Time-of-Flight (ToF) technique allows the determination of the neutron energy during the measurements. Combining ToF with PGNAA yields depth resolved information of the elemental concentration as neutrons with different energies probe different volumes within the sample.In the seminar, I will explain the basics of PGNAA and present the idea of a ToF-PGNAA. A detailed study of a ToF-PGNAA setup will be presented using Monte Carlo methods like OpenMC and a experimental validation at the RANS-I neutron source in RIKEN.

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Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. High Brilliance Source (JCNS-HBS)
3. Streumethoden (PGI-4)
4. JARA-FIT (JARA-FIT)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

Appears in the scientific report 2023

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