New Effective Organic Scintillators for Fast Neutron and Short-Range Radiation Detection

Budakovsky, S.V.; Galunov, N.Z.; Karavaeva, N.L.; Kim, Jong Kyung; Kim, Yong Kyun; Tarasenko, О.А.; Martynenko, E.V.

doi:10.1109/tns.2007.910423

Cited by 56 publications

(21 citation statements)

References 12 publications

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“…Further works reporting on crystals incorporated into radiation detectors have proven that stilbene crystals are better suited for fast neutron spectroscopy and neutron‐gamma discrimination than any other organic scintillators. However, in spite of more than a six‐decade history of development, stilbene single crystals, traditionally grown by melt (Bridgman) techniques, have been rarely produced at sizes exceeding 6–8 cm . A recent publication described the successful growth of 10 cm scale stilbene crystals of high optical quality from organic solutions, in which anisole was used as a solvent.…”

Section: Organic Single Crystals As Scintillators For Indirect Ionizimentioning

confidence: 99%

Ionizing Radiation Detectors Based on Solution‐Grown Organic Single Crystals

Fraboni

Fraleoni‐Morgera

Zaitseva

2015

Adv Funct Materials

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Organic single crystals (OSCs) have ideal qualities (well defi ned structure and\ud morphology, lack of grain boundaries, high purity, 3D long range order, good\ud electronic transport properties) for several technological applications, in particular\ud as key components for electronic devices. It is only recently that OSCs\ud have been considered as ionizing radiation detectors, and the latest developments\ud in this fi eld are here reported. In the fi rst section, various methods for\ud OSC growth are described, with emphasis on cost-effective, solution-based\ud approaches capable of delivering large volume, well performing crystals. The\ud second section is focused on the use of solution-grown OSCs as scintillators\ud (i.e., as high energy photon to UV–vis photon conversion), highlighting\ud the ability of cm-scale OSCs to effectively detect neutrons and to carry out\ud neutrons-gamma pulse-shape discrimination tasks. Finally, the third section\ud describes the use of semiconducting, solution-grown OSCs as effective\ud solid state direct detectors (i.e., directly converting high energy photons into\ud charge carriers), evidencing extremely promising performances in terms of\ud operability in environmental conditions (i.e., no need for encapsulation),\ud radiation hardness, linear response and low operating voltage

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Section: Organic Single Crystals As Scintillators For Indirect Ionizimentioning

confidence: 99%

Ionizing Radiation Detectors Based on Solution‐Grown Organic Single Crystals

Fraboni

Fraleoni‐Morgera

Zaitseva

2015

Adv Funct Materials

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“…However, when it comes to the design of detectors, which require large-volumes of scintillators [11,12], organic liquid scintillators are considered the preferred materials due to their low cost and easy availability. In spite of more than a six-decade history of development, stilbene single crystals are rarely produced at dimensions exceeding 10 cm, having more common sizes not larger than 6-8 cm [13]. The relatively high cost and limited availability of stilbene crystals stimulated the recent development of new types of solid-state PSD materials, such as composite [13] or plastic [14] scintillators that can be produced in larger volumes and at lower cost.…”

Section: Introductionmentioning

confidence: 99%

“…In spite of more than a six-decade history of development, stilbene single crystals are rarely produced at dimensions exceeding 10 cm, having more common sizes not larger than 6-8 cm [13]. The relatively high cost and limited availability of stilbene crystals stimulated the recent development of new types of solid-state PSD materials, such as composite [13] or plastic [14] scintillators that can be produced in larger volumes and at lower cost. However, based on the current data, it is hard to expect that either composites or plastics can be manufactured in the near future with PSD or spectroscopic properties equal to those of the stilbene crystal.…”

Section: Introductionmentioning

confidence: 99%

Scintillation properties of solution-grown trans-stilbene single crystals

Zaitseva

Glenn

Carman

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

125

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The scintillation properties of trans-stilbene crystals grown for the first time by application of the solution growth technique to the scale of 10 cm are reported. Measurements of the scintillation light output, pulse shape discrimination, and neutron detection efficiency were made with sets of crystals cut as 50 cm diameter cylinders of different lengths from 0.3 to 10 cm. Comparison to liquid scintillators and traditional melt-grown stilbene showed that at increasing sizes new solution-grown crystals exhibit better scintillation performance that makes them promising for use in large scale neutron detectors. Results are discussed in relation to structural imperfections attributed to different methods of growth.

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“…6 Another recent report of interest noted that crystalline tSB particles on the order of 1-2 mm embedded in an optical silicone matrix exhibit PSD, although scintillation signals for this material are lower than single crystal tSB for neutrons with energies above 2 MeV. 7 In tSB, the fluorescent process that leads to PSD is well-established to be bimolecular, in which one excited triplet state decays by transferring energy to another molecule generating a delayed fluorescence that would not be seen if the molecule decayed directly to the ground state. 8 The bimolecular nature of the fluorescence that gives rise to PSD and the observations cited above that tSB can be modified to control its fluorescent properties formed the basis for the proposed use of tSB-containing polymers as PSD scintillators.…”

Section: Introductionmentioning

confidence: 99%

Final LDRD report : advanced plastic scintillators for neutron detection.

Vance¹,

Mascarenhas²,

O'Bryan³

et al. 2010

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This report summarizes the results of a one-year, feasibility-scale LDRD project that was conducted with the goal of developing new plastic scintillators capable of pulse shape discrimination (PSD) for neutron detection. Copolymers composed of matrix materials such as poly(methyl methacrylate) (PMMA) and blocks containing transstilbene (tSB) as the scintillator component were prepared and tested for gamma/neutron response. Block copolymer synthesis utilizing tSBMA proved unsuccessful so random copolymers containing up to 30% tSB were prepared. These copolymers were found to function as scintillators upon exposure to gamma radiation; however, they did not exhibit PSD when exposed to a neutron source. This project, while falling short of its ultimate goal, demonstrated the possible utility of singlecomponent, undoped plastics as scintillators for applications that do not require PSD. 4 ACKNOWLEDGMENTS

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New Effective Organic Scintillators for Fast Neutron and Short-Range Radiation Detection

Cited by 56 publications

References 12 publications

Ionizing Radiation Detectors Based on Solution‐Grown Organic Single Crystals

Ionizing Radiation Detectors Based on Solution‐Grown Organic Single Crystals

Scintillation properties of solution-grown trans-stilbene single crystals

Final LDRD report : advanced plastic scintillators for neutron detection.

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