Evaluation of polyvinyl toluene scintillators for fast neutron imaging

Chuirazzi, William; Oksuz, Ibrahim; Kandlakunta, Praneeth; Massey, T. N.; Brune, C. R.; Cherepy, Nerine J.; Martínez, Henry; Cao, Lei

doi:10.1007/s10967-018-6080-1

Cited by 17 publications

(6 citation statements)

References 36 publications

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“…We studied the relationship between scintillator response and the energy of neutrons and γ-rays. The mono-energetic neutron reference field was provided by the reactions including 7 Li (p, n), T (p, n), and T (d, n) from the 5SDH-2 tandem accelerator in China Institute of Atomic Energy. The neutron energy employed are 1.2, 2.5, 3, 4, 5, and 6 MeV, respectively.…”

Section: Experimental and Theoretical Studies Of The Linear Responsementioning

confidence: 99%

“…5,6 Prevailing fast-neutron detection relies on protonrecoil organic scintillators, such as anthracene, stilbene, polymers doped with organic dyes or inorganic particles, and toluene solution containing a slight amount of emitting nanocrystals. [7][8][9] These scintillators suffer from limited light output (<33 500 photons/ MeV) and negligible γ-ray response due to their lack of heavy atoms. [10][11][12] Other non-mainstream fastneutron detection schemes are based on neutron moderation 13 or fast neutron-induced reactions, 14 nevertheless all or partial information on the original energy of the fast-neutrons are lost.…”

Section: Introductionmentioning

confidence: 99%

“…Prevailing fast‐neutron detection relies on proton‐recoil organic scintillators, such as anthracene, stilbene, polymers doped with organic dyes or inorganic particles, and toluene solution containing a slight amount of emitting nanocrystals 7–9 . These scintillators suffer from limited light output (<33 500 photons/MeV) and negligible γ‐ray response due to their lack of heavy atoms 10–12 .…”

Section: Introductionmentioning

confidence: 99%

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Organic–inorganic hybrid perovskite scintillators for mixed field radiation detection

Xia

Niu

Liu

et al. 2022

InfoMat

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Sensitive and fast detection of neutrons and gamma rays is vital for homeland security, high‐energy physics, and proton therapy. Fast‐neutron detectors rely on light organic scintillators, and γ‐ray detectors use heavy inorganic scintillators and semiconductors. Efficient mixed‐field detection using a single material is highly challenging due to their contradictory requirements. Here we report hybrid perovskites (C8H12N)2Pb(Br1−xClx)4 that combine light organic cations and heavy inorganic skeletons at a molecular level to achieve unprecedented performance for mixed‐field radiation detection. High neutron absorption due to a high density of hydrogen, strong radiative recombination within the highly confined [PbX6]4− layer, and sub‐nanometer distance between absorption sites and radiative centers, enable a light yield of 41 000 photons/MeV, detection pulse width of 2.97 ns and extraordinary linearity response toward both fast neutrons and γ‐rays, outperforming commonly used fast‐neutron scintillators. Neutron energy spectrum, time‐of‐flight based fast‐neutron/γ‐ray discrimination and neutron yield monitoring were all successfully achieved using (C8H12N)2Pb(Br0.95Cl0.05)4 detectors. We further demonstrate the monitoring of reaction kinetics and total power of a nuclear fusion reaction. We envision that molecular hybridized scintillators open a new avenue for mixed‐field radiation detection and imaging.

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Section: Experimental and Theoretical Studies Of The Linear Responsementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Organic–inorganic hybrid perovskite scintillators for mixed field radiation detection

Xia

Niu

Liu

et al. 2022

InfoMat

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“…With that we could believe the value of 1.05 still indicates that there are negligible thermal neutron contents in the beam when filtered by 2.54-cm thick lithiated glass. A high light-yield, 1 cm thick Polyvinyl Toluene (PVT) scintillator, doped with Ir-Complex, FIracac, provided by LLNL, was used as a neutron imager [8][9][10]. To collect thermal nCT data sets, a 450-μm thick thermal neutron-sensitive 6 LiF:ZnS (NDg) scintillator was used while the lithiated glass was not in the beam to use the thermal neutron component.…”

Section: Beam Facility and Experimental Setupmentioning

confidence: 99%

Comparison of thermal and fast neutron computed tomography of complex objects by additive manufacturing and electrical discharge machining

Oksuz

Bisbee

Cherepy³

et al. 2022

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIV

Self Cite

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Neutron radiography and computed tomography may be used to investigate internal structures of complex multi-material objects nondestructively. Thermal neutrons are more effective at producing high-contrast radiographs of objects composed of elements with relatively low atomic numbers (Z). A capability to produce high-quality CT reconstructions from both thermal and fast neutron computed tomography (nCT) using a lens-coupled imaging was demonstrated using various Additively Manufactured (AM'd) and Electrical Discharge Machining (EDM) phantoms, with layers and distinct features, made with intentional voids and out of high-and low-Z elements.

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“…Gamma nuclide-related studies have been mainly performed using inorganic scintillators, and studies utilizing a plastic scintillator were mainly applied to determine the presence of radioactive materials, or neutron imaging studies [20][21][22][23][24][25]. Many studies on the development of a high-performance plastic scintillator that could be used for gamma-ray measurement while having the advantages of a plastic scintillator by adding a high atomic number material to the plastic matrix have been conducted recently [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Wireless Backpack System for Detection of Radioactive Cesium on Contaminated Soil Using Portable Plastic Scintillator with Efficient Readout Device

Min

Seo

et al. 2021

Electronics

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The miniaturization and usability of radiation detectors make it increasingly possible to use mobile instruments to detect and monitor gamma radiations. Here, a Bluetooth-based mobile detection system for integrated interaction in a backpack was designed and implemented to smart equipment for the detection of radioactive cesium on contaminated soil. The radiation measurement system was demonstrated in the form of a backpack using a quantum dot (QD)-loaded plastic scintillator manufactured and prepared directly in this study, and it can be measured by a person in the wireless framework of integrated interaction. The QD-loaded plastic scintillator was measured after setting the distance from the contaminated soil to 20, 50, and 100 mm. As a result, the detection efficiency of the commercial plastic scintillator (EJ-200) was calculated to be 11.81% and that of the QD-loaded plastic scintillator was 15.22%, which proved the higher detection efficiency performance than the commercial plastic scintillator. The measurement result was transmitted to a personal computer using Bluetooth as a portable system. In the future, this wireless system design could be expanded as a wireless communication system equipped with a global positioning system to detect and measure radioactively contaminated environments.

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Evaluation of polyvinyl toluene scintillators for fast neutron imaging

Cited by 17 publications

References 36 publications

Organic–inorganic hybrid perovskite scintillators for mixed field radiation detection

Organic–inorganic hybrid perovskite scintillators for mixed field radiation detection

Comparison of thermal and fast neutron computed tomography of complex objects by additive manufacturing and electrical discharge machining

Wireless Backpack System for Detection of Radioactive Cesium on Contaminated Soil Using Portable Plastic Scintillator with Efficient Readout Device

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