A method for determining density based on gamma ray and fast neutron detection using a Cs2LiYCl6 detector in neutron-gamma density logging

Quan-ying, Zhang; Zhang, Feng; Gardner, R.P.; Yan, Huizhong; Wu, Guoli; Tian, Lili; Chen, Qian; Ti, Yongzhou

doi:10.1016/j.apradiso.2018.09.011

Cited by 8 publications

(3 citation statements)

References 19 publications

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“…This detector has been used in borehole logging application (Zhang et al, 2018) to derive a new density measurement method using fast neutrons and γ-ray counts only. This detector can provide porosity information with its thermal neutron detection capability.…”

Section: (B) 6 LI Foil Scintillator Sandwichmentioning

confidence: 99%

Radiation detectors for nuclear well-logging application: A review

Bala¹,

Jenkins²,

Namadi³

2022

dujopas

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The oil and gas industry uses nuclear logging method to survey for the presence of hydrocarbons in a given region of interest. Nuclear logging tools are used to achieve this aim. These tools consist of radiation sources and radiation detectors. 3He thermal neutron detector and NaI:Tl for gamma-ray measurements are the conventional detectors used for this application. However, the shortage of 3He gas used in 3He tube and the high demand for both detectors in many other societal applications has mandated the search for alternative radiation detectors. This paper reviewed other alternatives that are commercially available. Light output, temperature sensitivity, tolerance to vibration and shock are important parameters to consider when selecting a detector for this application. Among the reviewed alternatives, GS20 crystal for neutron and gamma ray measurements, LaBr:Ce and LuYAP:Ce for gamma ray measurement have been reported to have comparable performance to the conventional detectors.

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Section: (B) 6 LI Foil Scintillator Sandwichmentioning

confidence: 99%

Radiation detectors for nuclear well-logging application: A review

Bala¹,

Jenkins²,

Namadi³

2022

dujopas

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“…The Cs 2 LiYCl 6 :Ce 3+ (CLYC) is a highly promising inorganic scintillator due to its excellent ability to discriminate between neutron and gamma radiation [1][2][3]. CLYC-based detectors are widely used in neutron-gamma density logging [4], dual-particle imaging instruments [5], nuclear security applications [6], and space radiation detection [7]. The shape of the pulse corresponds to the type of internal interaction, whereas the height of the pulse is proportional to the energy of the detected event.…”

Section: Introductionmentioning

confidence: 99%

A pulse selection algorithm for SiPM-coupled CLYC detectors

Dai,

Yang,

Tang

et al. 2024

J. Inst.

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SiPM-coupled Cs2LiYCl6:Ce3+ (CLYC) detectors are widely used for detecting neutrons and gamma rays in mixed radiation environments. Intensities and energies are obtained from the output pulses of the detector, including normal and anomalous pulses. Since anomalous pulses can negatively affect measurement accuracy, this study designs a pulse selection algorithm to improve them. This algorithm calculates the ratio of the mean to the standard deviation of an output pulse in a particular time window and categorizes it as normal or anomalous. The algorithm also uses the difference in ratio value between neutrons and gamma rays for pulse shape discrimination. In an experiment using a SiPM-coupled CLYC detector, 200,000 sets of pulses were obtained for 137Cs and Am-Be sources. The results indicate that this method can reject more than 94.2% of anomalous pulses, improving the energy resolution of 137Cs source from 8.9% @ 662 keV to 8.4% @ 662 keV. The figure-of-merit (FOM) of pulse shape discrimination is 1.23 for the Am-Be source, and this method can select specific pulse types based on the pulse-ratio value. In addition, the method is suitable for all pulse-mode detectors.

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“…The Cs 2 LiYCl 6 :Ce 3+ (CLYC) is a promising inorganic scintillator for dual-particle imaging instruments [1], neutron-gamma density logging [2], nuclear security applications [3], and space radiation detection [4], due to its excellent gamma ray energy resolution and pulse shape discrimination (PSD) capability between neutrons and gamma rays [5]. The design and application of readout for particle detection applications are changing from traditional photomultiplier tubes (PMTs) to silicon photomultipliers (SiPMs) [6,7], owing to their compact size, low operating voltage, and magnetic insensitivity [8].…”

mentioning

confidence: 99%

Radiation damage on the performance of a silicon photomultiplier-coupled Cs₂LiYCl₆:Ce³⁺ detector

et al. 2023

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A silicon photomultiplier (SiPM) coupled Cs2LiYCl6:Ce3+ (CLYC) detector was developed for neutron detection in the narrow, mixed radiation field. Studies show that the SiPM and scintillator will suffer a certain degree of damage in high-intensity irradiation environments. To evaluate the effects of the radiation damage, the detector was exposed to a zero-power research reactor. The thermal neutron exposures ranged from 0 up to 7.60 × 107 n/cm2. The performance specifications on the gamma ray and thermal neutron pulses, 6Li(n, α)3H thermal neutron peaks, energy resolutions, and pulse shape discrimination were analyzed. The results showed that the standard gamma ray and thermal neutron pulses were slightly altered, the thermal neutron peak centroid reduced by 40%, the energy resolution of the 6Li(n, α)3H thermal neutron peak deteriorated from 15% to 21%, and the figure of merit of pulse shape discrimination decreased from 1.41 to 1.16. These variation curves can be applied to evaluate and correct the detector irradiation damage.

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A method for determining density based on gamma ray and fast neutron detection using a Cs2LiYCl6 detector in neutron-gamma density logging

Cited by 8 publications

References 19 publications

Radiation detectors for nuclear well-logging application: A review

Radiation detectors for nuclear well-logging application: A review

A pulse selection algorithm for SiPM-coupled CLYC detectors

Radiation damage on the performance of a silicon photomultiplier-coupled Cs₂LiYCl₆:Ce³⁺ detector

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A method for determining density based on gamma ray and fast neutron detection using a Cs2LiYCl6 detector in neutron-gamma density logging

Cited by 8 publications

References 19 publications

Radiation detectors for nuclear well-logging application: A review

Radiation detectors for nuclear well-logging application: A review

A pulse selection algorithm for SiPM-coupled CLYC detectors

Radiation damage on the performance of a silicon photomultiplier-coupled Cs2LiYCl6:Ce3+ detector

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Radiation damage on the performance of a silicon photomultiplier-coupled Cs₂LiYCl₆:Ce³⁺ detector