Some aspects of discrimination techniques for the measurement of neutrons and photons of gamma radiation in geological applications

Baker, Jalal Hasan; Galunov, N.Z.; Stepanenko, A. M.; Tarasenko, О.А.

doi:10.1016/j.radmeas.2004.01.017

Cited by 18 publications

(17 citation statements)

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“…(3)). The results of measuring gamma spectra were the same as reported before for detector on the basis of a NaI(Tl) crystal (see Baker et al, 2004).…”

Section: Results Of Tests and Discussionmentioning

confidence: 97%

“…We use the same neutron emitting tube as in previous studies (Baker et al, 2004). It generates 14.2 MeV neutrons obtained by a deuterium-tritium reaction.…”

Section: Methodsmentioning

confidence: 99%

“…The analysis of the products of the reactions of fast neutron interaction with nuclei of a medium can be a good basis for such a study (Baker et al, 2004). The interaction of a fast neutron with an atomic nucleus may result in the production of secondary radiations, whose path range is sufficiently long to leave the media and to be detected.…”

Section: Introductionmentioning

confidence: 99%

“…These results in the generation of two types of different overlapping gamma spectra caused by practically simultaneous events of radiative capture of fast and thermal neutrons in the medium (see e.g. Baker et al, 2004). Thus, the time dependence of thermal neutron detection or the energies of gamma spectrum give important information about the chemical composition of any medium irradiated by fast neutrons.…”

Section: Introductionmentioning

confidence: 99%

“…Previously (see Baker et al, 2004) we selected the most suitable scintillation materials which are the most effective for the detection of the abovementioned types of radiation. It has been shown that the most effective approach to detect thermal neutrons is to use a scintillator that contains elements with a high efficiency of thermal neutron absorption, e.g.…”

Section: Introductionmentioning

confidence: 99%

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A combined NaI(Tl)+LiI(Eu) detector for environmental, geological and security applications

Baker¹,

Galunov

Seminozhenko

et al. 2007

Radiation Measurements

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“…(3)). The results of measuring gamma spectra were the same as reported before for detector on the basis of a NaI(Tl) crystal (see Baker et al, 2004).…”

Section: Results Of Tests and Discussionmentioning

confidence: 97%

“…We use the same neutron emitting tube as in previous studies (Baker et al, 2004). It generates 14.2 MeV neutrons obtained by a deuterium-tritium reaction.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A combined NaI(Tl)+LiI(Eu) detector for environmental, geological and security applications

Baker¹,

Galunov

Seminozhenko

et al. 2007

Radiation Measurements

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Zero‐Dimensional Gua₃SbCl₆ Crystals as Intrinsically Reabsorption‐Free Scintillators for Radiation Detection

Zaffalon

Cova

et al. 2023

Adv Funct Materials

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The search for efficient, re‐absorption‐free scintillators has recently focused the attention on antimony‐based halides, which exhibit largely Stokes shifted luminescence due to radiative recombination of excitons self‐trapped (STE) in strongly Jahn–Teller distorted Sb3+ color centers. Here, the synthesis of a hybrid structure is reported with chemical formula (C13H14N3)3SbCl6 consisting of spatially isolated [SbCl6]3− octahedra separated by organic N,N'‐diphenylguanidinium (Gua) molecules. The optical properties of this material are mainly determined by the inorganic component and are characterized by a pronounced Stokes shift of ≈1.3 eV and a room‐temperature photoluminescence (PL) efficiency of up to 85%. Remarkably, highly efficient radioluminescence (RL) is observed with scintillation light yields of ≈2000 ph MeV−1 using both soft X‐rays and a 124 keV gamma source. Temperature‐dependent PL and RL measurements confirm the minor role of non‐radiative channels, which are completely suppressed below 100 K. Thermally stimulated luminescence measurements suggest that the traps in Gua3SbCl6 crystals have a significantly large energy depth distribution below the absorbing state.

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Stokes Shift Engineered Mn:CdZnS/ZnS Nanocrystals as Reabsorption‐Free Nanoscintillators in High Loading Polymer Composites

Carulli

Cova

Gironi

et al. 2022

Advanced Optical Materials

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Efficient detection of ionizing radiation plays a central role in several scientific and technological fields such as high energy and particle physics, astronomy, geology, medical diagnostics, nuclear monitoring, oil extraction, and space exploration. [1] In all such areas the most widely used detectors are scintillating materials that convert the energy deposited by incoming ionizing radiation into visible photons, which are then turned into electrical signals by coupled photodetectors (e.g. photomultiplier tubes or silicon photomultipliers). [2] The relatively simple device architecture and the availability of high atomic number (Z) materials efficiently interacting with ionizing radiation of various energies (the interaction probability scales with Z n with n = 1-5 depending on the interaction mechanism [1f,3] ) is enabling rapid progress in the design of scintillators optimized for specific application requirements. [4] A valuable class of radiation detectors is represented by plastic scintillators that can be produced in large sizes not achievable with inorganic single crystals, low weight, and affordable costs that make them particularly suitable for radiation monitoring in border and industrial control. [2b,5] However, being constituted of light organic materials, plastic scintillators typically suffer from relatively low density that limits their interaction with ionizing radiation and therefore require doping with high-Z components, such as organometallic complexes or nanoparticles containing heavy elements. [2b,6] Amongst the various systems proposed to date, direct bandgap colloidal semiconductor nanocrystals (NCs) featuring efficient excitonic photophysics, such as cadmium or zinc chalcogenides or lead halide perovskites, are gaining particular interest as nanoscintillators, as they both enhance the interaction probability with ionizing radiation and effectively convert the deposited energy into visible light whose wavelength can be finely tuned by size and composition control. [2b,7] Furthermore, NCs also feature a rich surface chemistry [8] that enables their post-synthesis functionalization with molecular ligands that prompt their compatibility with plastic matrices, thus enabling the realization of Plastic scintillators are gaining attention as alternatives to inorganic scintillator crystals owing to their low fabrication cost, customable shape/size, and substantially lighter weight that make them suitable for various radiation detection technologies. These include scintillation panels for national security and industrial monitoring, radiation screens for medical diagnostics, and calorimeters for high energy physics. Because of their low density, plastic scintillators are typically doped with high atomic number (Z) sensitizers that enhance the interaction probability with ionizing radiation and excite molecular emitters. Although effective, such a two-component design suffers from incomplete sensitization, intrinsically limited efficiency due to multiple radiative steps with non-unity quan...

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Some aspects of discrimination techniques for the measurement of neutrons and photons of gamma radiation in geological applications

Cited by 18 publications

References 0 publications

A combined NaI(Tl)+LiI(Eu) detector for environmental, geological and security applications

A combined NaI(Tl)+LiI(Eu) detector for environmental, geological and security applications

Zero‐Dimensional Gua₃SbCl₆ Crystals as Intrinsically Reabsorption‐Free Scintillators for Radiation Detection

Stokes Shift Engineered Mn:CdZnS/ZnS Nanocrystals as Reabsorption‐Free Nanoscintillators in High Loading Polymer Composites

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Some aspects of discrimination techniques for the measurement of neutrons and photons of gamma radiation in geological applications

Cited by 18 publications

References 0 publications

A combined NaI(Tl)+LiI(Eu) detector for environmental, geological and security applications

A combined NaI(Tl)+LiI(Eu) detector for environmental, geological and security applications

Zero‐Dimensional Gua3SbCl6 Crystals as Intrinsically Reabsorption‐Free Scintillators for Radiation Detection

Stokes Shift Engineered Mn:CdZnS/ZnS Nanocrystals as Reabsorption‐Free Nanoscintillators in High Loading Polymer Composites

Contact Info

Product

Resources

About

Zero‐Dimensional Gua₃SbCl₆ Crystals as Intrinsically Reabsorption‐Free Scintillators for Radiation Detection