Design considerations for thin film coated semiconductor thermal neutron detectors—I: basics regarding alpha particle emitting neutron reactive films

McGregor, Douglas S.; Hammig, Mark D.; Yang, Yongsoo; Gersch, H.K.; Klann, R. T.

doi:10.1016/s0168-9002(02)02078-8

Cited by 277 publications

(228 citation statements)

References 22 publications

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“…Simulations confirming the results of [3,4]. Left: By increasing the number of layers, the final efficiency of the detector increases, whereas the optimal thickness decreases.…”

Section: Introductionsupporting

confidence: 70%

“…The use of many layers has been studied through simulations ( [3,4]) and confirmed by this work (figure 1), where it can be seen that the efficiency increases with the number of layers and the optimal thickness decreases. Furthermore, for more layers, the optimal efficiency becomes more dependent on the thickness of each layer.…”

Section: Introductionmentioning

confidence: 56%

“…Several multi-layer geometries have already been developed, such as Multi-grid [5], Inclined detector [6], Jalousie [7] or Cascade [1] with efficiencies very close to those achieved with 3 He-based detectors. However, most of them achieve limited position resolutions due to the geometry of the neutron absorbers.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of multilayer Thick-GEM geometries as ¹⁰B converters aiming thermal neutron detection

et al. 2018

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Abstract. Boron-based thermal neutron detectors have recently regained some attention from the instrumentation community as a strong alternative to helium-3 detectors. From the existing concepts exploiting boron layers in position sensitive detectors, the Cascade [1] is the one that takes full advantage of the 2D capabilities of gaseous detectors, with the position resolution not limited by the architecture of the detector. In this work, a proposal for the Cascade detector, based on Thick-GEMs is presented, together with some preliminary studies of the suitable pitch that optimizes the neutron conversion efficiency, while keeping the collection efficiency intact. The characterization of Thick-GEM prototypes produced in Brazil with hole pitch from 0.75 to 3 mm shows that these devices already present a stable performance at low gains, also resulting in fair energy resolution, when cascaded with a standard Kapton TM 50 µm GEM. Results of the first attempts of boron film depositions with Ion Beam Assisted Deposition and characterization by Ion Beam Analysis are also presented.

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“…Simulations confirming the results of [3,4]. Left: By increasing the number of layers, the final efficiency of the detector increases, whereas the optimal thickness decreases.…”

Section: Introductionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 56%

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Characterization of multilayer Thick-GEM geometries as ¹⁰B converters aiming thermal neutron detection

et al. 2018

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“…A most commonly used gas tube as the neutron detector is not suitable for imaging devices due to its low spatial resolution. Scintillators and semiconductor detectors are more effective as thermal neutron detectors for imaging devices, because fast response time and high resolution can be achieved [3][4][5][6][7][8][9]. However, they are sensitive to both neutron and gamma ray.…”

Section: Introductionmentioning

confidence: 99%

Semiconductor Thermal Neutron Detector

Aoki

Miyake

Nakano

et al. 2014

MST

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The CdTe and GaN detector with a Gd converter have been developed and investigated as a neutron detector for neutron imaging. The fabricated Gd/CdTe detector with the 25 mm thick Gd was designed on the basis of simulation results of thermal neutron detection efficiency and spatial resolution. The Gd/CdTe detector shows the detection of neutron capture gamma ray emission in the 155 Gd(n, g) 156 Gd, 157 Gd(n, g) 158 Gd and 113 Cd(n, g) 114 Cd reactions and characteristic X-ray emissions due to conversion-electrons generated inside the Gd film. The observed efficient thermal neutron detection with the Gd/CdTe detector shows its promise in neutron radiography application. Moreover, a BGaN detector has also investigated to separate neutron signal from gamma-ray clearly. AbstrakDetektor Neutron Termal Semikonduktor. Detektor CdTe dan GaN dengan konverter Gd telah dikembangkan dan diteliti sebagai detektor neutron yang digunakan dalam pencitraan neutron. Detektor Gd/CdTe yang dibuat dengan Gd setebal 25 mm itu dirancang berdasarkan hasil simulasi efisiensi pendeteksian dan resolusi spasial neutron termal. Detektor Gd/CdTe menunjukkan adanya pendeteksian neutron yang menangkap emisi sinar gamma dalam reaksi-reaksi 155 Gd(n, g) 156 Gd, 157 Gd(n, g) 158 Gd, dan 113 Cd(n, g) 114 Cd dan emisi sinar-X yang khas sebagai akibat dari dihasilkannya elektron-elektron konversi dalam film Gd. Dalam aplikasi radiografi neutron, pendeteksian dengan detektor Gd/CdTe yang efisien terhadap neutron termal yang diteliti merupakan temuan yang menjanjikan. Selain itu, diselidiki juga bahwa detektor BGaN dapat memisahkan sinyal neutron dan sinar gamma dengan jelas.

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“…A number of boron based conversion layer neutron detector diode devices have been fabricated [5,12,[16][17][18][19][20][21][22][23][24], as well as some heterojunction diode detectors [1][2][3]5]. Both the heterojunction diodes (where one side of the diode, usually the p-layer, contains boron) and conversion layer devices have pulse height spectra characteristic of strong contributions from 0.…”

mentioning

confidence: 99%

The all boron carbide diode neutron detector: Comparison with theory

Caruso¹,

Dowben²,

Balkir³

et al. 2006

Materials Science and Engineering: B

110

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Design considerations for thin film coated semiconductor thermal neutron detectors—I: basics regarding alpha particle emitting neutron reactive films

Cited by 277 publications

References 22 publications

Characterization of multilayer Thick-GEM geometries as ¹⁰B converters aiming thermal neutron detection

Characterization of multilayer Thick-GEM geometries as ¹⁰B converters aiming thermal neutron detection

Semiconductor Thermal Neutron Detector

The all boron carbide diode neutron detector: Comparison with theory

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Design considerations for thin film coated semiconductor thermal neutron detectors—I: basics regarding alpha particle emitting neutron reactive films

Cited by 277 publications

References 22 publications

Characterization of multilayer Thick-GEM geometries as 10B converters aiming thermal neutron detection

Characterization of multilayer Thick-GEM geometries as 10B converters aiming thermal neutron detection

Semiconductor Thermal Neutron Detector

The all boron carbide diode neutron detector: Comparison with theory

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Product

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Characterization of multilayer Thick-GEM geometries as ¹⁰B converters aiming thermal neutron detection

Characterization of multilayer Thick-GEM geometries as ¹⁰B converters aiming thermal neutron detection