X-ray, γ-ray and neutron detector development for future space instrumentation

Hansson, Conny; Owens, A.; Biezen, J. van der

doi:10.1016/j.actaastro.2013.06.024

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…AlGaAs [9] [10], AlInP [11] [12], HgI2 [13], TlBr [14], and CdTe and CdZnTe [15][16][17]. Applications which would benefit from the development of wide bandgap X-ray detectors include those with limitations on the mass, volume, power and/or cost of the instrumentation since elimination of the cooling systems and shielding which are often required for narrower bandgap detectors would produce real advantages.…”

Section: Introductionmentioning

confidence: 99%

“…CdZnTe detectors have been used for such applications [22] [23], but can suffer performance degradation. For example, Te inclusions and polarization effects within Cd1-xZnxTe detectors [16] can cause degradation in spectral response (e.g. a relatively modest 1.6 keV Full Width at Half Maximum (FWHM) at 5.9 keV was achieved at 23 °C [24] and 1.8 keV FWHM (without tail) at 59.54 keV was achieved at 21 °C [17], despite significant worldwide efforts to develop improved CdZnTe detectors).…”

Section: Introductionmentioning

confidence: 99%

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Energy response characterization of InGaP X-ray detectors

Lioliou

Krysa

Barnett

2018

Journal of Applied Physics

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Two custom-made In0.5Ga0.5P p + -i-n + circular mesa spectroscopic X-ray photodiodes with different diameters (200 m and 400 m) and a 5 m i layer have been characterized for their response to X-ray photons within the energy range 4.95 keV to 21.17 keV. The photodiodes, operating uncooled at 30 °C, were coupled, in turn, to the same custom-made charge-sensitive preamplifier. X-ray fluorescence spectra of high-purity calibration foils excited by a Mo target X-ray tube were accumulated. The energy resolution (Full Width at Half Maximum) increased from 0.79 keV ± 0.02 keV at 4.95 keV to 0.83 keV ± 0.02 keV at 21.17 keV, and from 1.12 keV ± 0.02 keV at 4.95 keV to 1.15 keV ± 0.02 keV at 21.17 keV, when using the 200 m and 400 m diameter devices, respectively. Energy resolution broadening with increasing energy was attributed to increasing Fano noise (negligible incomplete charge collection noise was suggested); for the first time the Fano factor for In0.5Ga0.5P was experimentally determined to be 0.13, suggesting a Fano limited energy resolution of 145 eV at 5.9 keV. The charge output of each system had a linear relationship with photon energy, across the investigated energy range. The count rate of both spectroscopic systems increased linearly with varying X-ray tube current up to ~10 5 photons s -1 cm -2 incident photon fluences. The development of In0.5Ga0.5P based spectrometers is particularly important for hard X-/ -ray astronomy, due to the material's large linear X-ray and -ray absorption coefficients and ability to operate uncooled at high temperatures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy response characterization of InGaP X-ray detectors

Lioliou

Krysa

Barnett

2018

Journal of Applied Physics

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“…Generally, the light yield produced as a result of α interactions is lower than that resulting from γ interactions for the same amount of energy deposited [33]. Another potential area of application for boron doped crystals capable of neutron detection is considered to be space instrumentation, with initial experiments showing reasonable results in regard to thermal neutron detection efficiency [34].…”

Section: Detectors Utilising Other Properties Of Inorganic Crystalsmentioning

confidence: 99%

Critical Review of Scintillating Crystals for Neutron Detection

2019

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There exists an ongoing need to develop and improve methods of detecting radioactive materials. As each radioactive isotope leaves a unique mark in a form of the particles it emits, new materials capable of detecting and measuring these particles are constantly sought. Neutrons and their detectors play a significant role in areas such as nuclear power generation, nuclear decommissioning and decontamination, border security, nuclear proliferation and nuclear medicine.Owing to the complexity of their detection, as well as scarcity of 3 He, which has historically been the preferred choice for neutron detection in many application fields, new sensitive materials are sought. Organic and inorganic scintillating crystals have been recognised as particularly good alternatives, and as such systems that utilise them are increasingly common. As they allow investigation of the neutron energy spectra, greater information about the radioactive source can be inferred. Therefore, in this article, an extensive review of scintillating crystals used for neutron detection is presented. By describing the history of scintillating crystals and discussing changes that occurred in their use and development of methods for radiation detection, the authors present a comprehensive overview of the current situation. Supported by a practical example, possible future directions of the research area are also presented.

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“…With the evolution of growth procedures, however, crystals with improved energy resolution, such as LaBr 3 :Ce, or LaBr 3 :Ce,Sr, are now also routinely produced with dimensions up to several cubic inches [1,2,3,4]. Crystals of LaBr 3 :Ce, and more recently also CeBr 3 , which has the advantage over the former of being much less intrinsically radioactive [5,6], are now commonly used for applications that were once dominated by NaI(Tl) crystals. LaBr 3 :Ce offers resolution values of the order of 3% FWHM at 661.7 keV [5].…”

Section: Introductionmentioning

confidence: 99%

Performance tests of a LaBr3:Ce detector coupled to a SiPM array and the GET electronics for γ-ray spectroscopy in a strong magnetic field

Poleshchuk

Swartz

Arokiaraj

et al. 2021

Nuclear Instruments and Methods in Physics Research Section A:

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Measurements have been performed with scintillation crystals of LaBr 3 :Ce coupled to arrays of Silicon Photomultipliers (SiPMs) in a 3 T magnetic field. The SiPMs were read out by digital data acquisition systems, including the GET electronics system. Inside of the B-field, energy resolution values of 3.82% FWHM at 661.7 keV are reported for a 1.5 cubic LaBr 3 :Ce crystal coupled to a 6 × 6 array of 6 × 6 mm 2 SiPMs. No measurable degradation in energy resolution due to the presence of the strong magnetic field was observed.

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X-ray, γ-ray and neutron detector development for future space instrumentation

Cited by 12 publications

References 10 publications

Energy response characterization of InGaP X-ray detectors

Energy response characterization of InGaP X-ray detectors

Critical Review of Scintillating Crystals for Neutron Detection

Performance tests of a LaBr3:Ce detector coupled to a SiPM array and the GET electronics for γ-ray spectroscopy in a strong magnetic field

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