Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Instrumentation II

HK 5.4: Vortrag

Montag, 10. März 2025, 15:45–16:00, SR Exp1B Chemie

Determining the Neutron Detection Efficiency of Lithium-Glass Detectors — •Felix Panholzer — Goethe Universität, Frankfurt am Main, Germany

A novel approach to measuring neutron capture reactions in inverse kinematics is based on Coulomb photo-dissociation. However, this method relies on the detection of the separated neutrons and thus the detection efficiency needs to be determined.

The objective of this talk is to elaborate on the aim of determining the neutron detection efficiency of lithium-glass scintillators. In particular, the Li(p,n)Be reaction is employed for the production of neutrons, which are subsequently measured by a Li-glass detector that partly relies on the ⁶Li(n,α)T reaction. On the other hand, in order to ascertain the precise number of neutrons produced, the radioactive gamma decay (with an energy of 478 keV) of the ⁷Be nuclei will be quantified using Broad Energy Germanium (BEGe) detectors. The ratio of these two measurements provides an accurate estimation of the Li-glass detector’s detection efficiency.

Keywords: Li-Glass Detectors; Neutron Detection Efficiency; Li(p,n)Be; BEGe Detector