15-16 April 2019
University of Surrey
Europe/London timezone

Thermal-neutron detection with GAGG:Ce

16 Apr 2019, 10:00
15m
University of Surrey

University of Surrey

Guildford, UK

Speaker

Matt Taggart (University of Surrey)

Description

The focus on the scintillator Gd3Al2Ga3O12 (GAGG) has generally been on its exploitation for medical physics applications, predominantly positron emission tomography. GAGG has brightness comparable to other high-light yield scintillators at 40-55,000 ph/MeV (depending on the exact formulation), and with a density of 6.63g/cm3 coupled to an effective Z-number of 54 results in a scintillator with high stopping power and sensitivity to gamma rays. More importantly however, is the gadolinium content. The isotope Gd-157 has one of the highest thermal-neutron capture cross sections known at 250,000 barns, which means that even relatively small pieces of GAGG will retain an almost 100% efficiency for thermal-neutron detection. GAGG therefore has the potential as an extremely suitable material for compact neutron detection systems. In this work we present the findings of a NuSec PDRA grant and discuss the suitability of GAGG for neutron detection applications.

Primary authors

Matt Taggart (University of Surrey) Mohammad Nakhostin Paul Sellin (University of Surrey)

Presentation Materials