Measurements of performance of a pixel-type two-dimensional position sensitive Li-glass neutron detector

Mizukami, K.; Sato, S.; Sagehashi, Hidenori; Ohnuma, Susumu; Ooi, Motoki; Iwasa, H.; Hiraga, Fujio; Kamiyama, Takashi; Kiyanagi, Yoshiaki

doi:10.1016/j.nima.2004.05.001

Cited by 37 publications

(13 citation statements)

References 2 publications

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“…We used a Liglass 2D-PSD having 16x16=256 pixels with about 2.1mm x 2.1mm pixel size [4]. The efficiency of this detector is almost 100% for cold neutrons.…”

Section: Methodsmentioning

confidence: 99%

Study on phase transition of Pb–Bi eutectic alloy by neutron transmission spectroscopy

Takada

Kamiyama

Kiyanagi

2010

Journal of Nuclear Materials

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LBE (Lead Bismuth Eutectic), which is a candidate for spallation targets, has some problems. One of them is expansion after solidification, which may bring about serious damage of an LBE loop. Two solid phases of β-phase (inter-metallic compound) and γ-phase (solid solution of Pb in Bi) appear in LBE, and it was reported that an increase of the γ-phase observed by X-ray corresponds to the volume expansion of LBE. We performed neutron spectroscopic transmission experiments using a pulsed neutron source in order to observe crystal transformation depending on the position and time for slow and rapid cooling LBE samples. It was found that the crystal structure of the slow cooling LBE varied depending on position while it was rather homogeneous for the rapid cooling sample. The re-crystallization of the γ-phase was more clearly observed for the rapid cooling sample than the slow one. We were able to obtain information of re-crystallization over the whole volume of the samples.

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“…We used a Liglass 2D-PSD having 16x16=256 pixels with about 2.1mm x 2.1mm pixel size [4]. The efficiency of this detector is almost 100% for cold neutrons.…”

Section: Methodsmentioning

confidence: 99%

Study on phase transition of Pb–Bi eutectic alloy by neutron transmission spectroscopy

Takada

Kamiyama

Kiyanagi

2010

Journal of Nuclear Materials

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“…For the traditional imaging, various neutron converters have been developed and used. Recently, we have been developing counting type imagers [1][2][3] that can be used at pulsed neutron sources, namely that have a function of the time-of-flight measurement. Another imaging device candidate is vacuum-tube type neutron imaging intensifiers (NII) [4] since it has been considered to have high detection efficiency and high spatial resolution compared with the traditional neutron scintillator NE426 (ZnS:Ag/ 6 LiF).…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of Imaging Characteristics of the Neutron Image Intensifiers

et al. 2014

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A vacuum-tube type neutron image intensifier (NII), composed of Gd or 10 B neutron convertor, is considered to have better spatial resolution and better detection efficiency compared with a traditional neutron scintilator. However, quantitative evaluation of difference in sensitivity among these imagers and difference in characteristics of the images between two NIIs has not been done since it needs measurements under the same irradiation condition. In this study we carried out radiography experiments at Hokkaido University Neutron Source (HUNS). Firstly, neutron radiography images were obtained by Gd-type NII, 10 B-type NII, and the traditional neutron scintillator; NE426 (ZnS:Ag/ 6 LiF). Next, we evaluated the brightness values from these images. We also evaluated the contrast and the image quality from two NIIs. The brightness of Gd-type NII is 8.8 times and the 10 B-type is 12.9 times higher than the NE426. There is contrast little difference between the two types of NII. The image quality of Gd-type is better than 10 B-type when exposure time is short.

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“…Mizukami et al developed a pixel-type two-dimensional (2-D) Li-glass position sensitive detector (PSD) [6] suitable for the transmission measurement. By using this detector behind the bulk sample, the total cross section at each sample position corresponding to each pixel position was obtained.…”

Section: Introductionmentioning

confidence: 99%

Position Dependence of SS304 and Iron Phases in Welded Specimen by Neutron Diffraction and Bragg-Edge Transmission Method

Iwase

Sato

Mori

et al. 2011

Metall Mater Trans A

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We investigated the nondestructive examination method by neutron scattering. A welded plate of SS304 (fcc) and iron (bcc) was investigated using neutron diffraction and the Bragg-edge transmission method. We tried to clear the positions of the welded area, SS304 phase, and iron phase and to determine the lattice spacing. The determined value of d 111 for SS304 is 2.07471(8) Å using neutron diffraction. With Bragg-edge transmission, it is possible to collect the information of a specimen as two-dimensional (2-D) images using a 2-D position sensitive detector at a pulse neutron source. The determined d 111 of SS304 phase indicates between 2.0745(8) and 2.0752(9) Å depending on the measurement points using Bragg-edge transmission. The same tendency was also seen in iron phase. The determined d 110 of the iron phase is 2.02802(1) Å using neutron diffraction. The determined d 110 of iron phase indicates between 2.0266(7) and 2.0321(13) Å using Bragg-edge transmission. The determined d using diffraction exists within that of Bragg-edge transmission. In order to clarify the position dependency of the phase and lattice spacing, the combined diffraction and Bragg-edge transmission is effective.

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Measurements of performance of a pixel-type two-dimensional position sensitive Li-glass neutron detector

Cited by 37 publications

References 2 publications

Study on phase transition of Pb–Bi eutectic alloy by neutron transmission spectroscopy

Study on phase transition of Pb–Bi eutectic alloy by neutron transmission spectroscopy

Quantitative Evaluation of Imaging Characteristics of the Neutron Image Intensifiers

Position Dependence of SS304 and Iron Phases in Welded Specimen by Neutron Diffraction and Bragg-Edge Transmission Method

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