Proton Quenching in Rare-Earth Inorganic Scintillators: GAGG:Ce and YSO:Ce

Nathaly Espinoza, Tatiana; Walter, David; Bartlett, Kurtis David; Roecker, Caleb Daniel; Schirato, Richard C.; Hoover, Andrew Scott; Larsen, Brian Arthur; Wang, Yongqiang; Chancey, Matthew Ryan; Hecht, Adam A.

doi:10.1109/tns.2024.3434380

Proton Quenching in Rare-Earth Inorganic Scintillators: GAGG:Ce and YSO:Ce

Journal Article · Fri Aug 02 00:00:00 EDT 2024 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/tns.2024.3434380· OSTI ID:2561286

^[1]; Walter, David ^[2]; ^[2]; Roecker, Caleb Daniel ^[2]; ^[2]; ^[2]; Larsen, Brian Arthur ^[2]; ^[2]; ^[2]; ^[3]

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Univ. of New Mexico, Albuquerque, NM (United States)

Scintillator detectors are an integral component of radiation detection systems for a variety of applications such as medical imaging, accelerator diagnostics, and space science. Typically, a scintillator detector’s response is characterized using gamma sources to understand the detection response to different types of radiation, including charged particle detection. However, there exists a nonlinearity of the amount of light produced from an incident gamma ray of specific energy and the light produced from an incident charged particle of the same energy. This important effect, known as quenching, must be accounted for to interpret energies from charged particles incident on detectors. In this article, we present results of quenching parameterization for two types of cerium-doped inorganic scintillators, Y2SiO5:Ce (YSO:Ce) and Gd3Al2Ga3O12:Ce (GAGG:Ce). We measured the light output from incident proton energies from 1 to 25 MeV using a 3-MV tandem accelerator and two reactions: Au(p,p)Au and 3He(d,p)⁴He. Using gamma-ray sources to calibrate the detectors, we compared the measured electron-equivalent energy versus the incident energy expected. Using an adaptation of the Birks semi-empirical formula, we extracted the Birks parameter (kB) to understand quenching. For one of the GAGG:Ce samples, the kB parameter of 0.0072 [g cm-2 MeV-1] is comparable to a similar study where the value of kB was 0.0065 [g cm-2 MeV-1]. For YSO:Ce, no other kB values were found in the literature. Three different types of GAGG:Ce were used to collect measurements of kB as a function of dopant concentration.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 2561286

Report Number(s):: LA-UR--24-23099

Journal Information:: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 9 Vol. 71; ISSN 0018-9499

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
GAGG:Ce
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light-output
non-linearity
quenching
scintillator effects

Proton Quenching in Rare-Earth Inorganic Scintillators: GAGG:Ce and YSO:Ce

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