# IEEE Transactions on Nuclear Science

## Issue 4  Part 2 • Aug. 2013

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 46

Publication Year: 2013, Page(s):C1 - 2830
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• ### IEEE Transactions on Nuclear Science publication information

Publication Year: 2013, Page(s): C2
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• ### Suppression of Interface-Induced Noise by the Control of Electron-Phonon Interactions

Publication Year: 2013, Page(s):2831 - 2839
Cited by:  Papers (2)
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We study the influence of various types of contacting media and contact area on the current-fluctuation level in semiconductors, testing the supposition that the electronic noise is governed, in part, by phonon-leaking dynamics to the environment. Using passivated and gettered silicon PIN diodes as experimental test-beds, the presented data lends credence to the prediction that the phonon-refracti... View full abstract»

• ### Temperature-Dependent Measurements of Time-of-Flight Current Waveforms in Schottky CdTe Detectors

Publication Year: 2013, Page(s):2840 - 2844
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Temporal evolution of the time-of-flight current waveforms of Schottky CdTe detectors as a function of the DC bias duration has been measured at several different temperatures from 278 K to 315 K to investigate the nature of the defects responsible for the polarization phenomena. The electron transient current waveforms under the application of DC bias show polarization as evidenced by a change in... View full abstract»

• ### High Energy Resolution CdTe Schottky Diode $gamma$-Ray Detectors

Publication Year: 2013, Page(s):2845 - 2852
Cited by:  Papers (2)
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Schottky diode X-/ γ-ray detectors based on semi-insulating Cl-doped CdTe crystals have been developed and investigated. Both the Schottky and Ohmic contacts were formed by vacuum deposition of Ni electrodes on the opposite faces of (111) oriented CdTe crystals pretreated by Ar ion bombardment with different conditions. Record-low leakage current in the fabricated Ni/CdTe/Ni structure at hi... View full abstract»

• ### Cd$_{0.9}$ Zn$_{0.1}$ Te Crystal Growth and Fabrication of Large Volume Single-Polarity Charge Sensing Gamma Detectors

Publication Year: 2013, Page(s):2853 - 2858
Cited by:  Papers (2)
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Detector grade Cd0.9Zn0.1Te single crystals were grown using a tellurium solvent method. Single crystal blocks of volume ~1 cm3 were prepared for detector fabrication and characterization. The grown crystals were characterized using infra-red transmission imaging and Pockel's effect measurements. Two detectors in single-polarity charge sensing configurations viz., ... View full abstract»

• ### MOVPE Growth of Thick Single Crystal CdZnTe Epitaxial Layers on Si Substrates for Nuclear Radiation Detector Development

Publication Year: 2013, Page(s):2859 - 2863
Cited by:  Papers (3)
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Details about the MOVPE growth of thick single crystal CdZnTe layers on (211)Si substrates are presented. The growth was carried out at a substrate temperature of 650°C, using dimethylcadmium, dimethylzinc, and diethyltellurium precursors. Control of Zn-concentration in the range from 0 to 0.2 was performed by controlling the precursors' flow-rates and ratio. Results from the XRD showed gro... View full abstract»

• ### Probing Defects in a Small Pixellated CdTe Sensor Using an Inclined Mono Energetic X-Ray Micro Beam

Publication Year: 2013, Page(s):2864 - 2869
Cited by:  Papers (3)
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High quantum efficiency is important in X-ray imaging applications. This means using high-Z sensor materials. Unfortunately many of these materials suffer from defects that cause non-ideal charge transport. In order to increase the understanding of these defects, we have mapped the 3D response of a number of defects in two 1 mm thick CdTe sensors with different pixel sizes (55 μm and 110 &#... View full abstract»

• ### Defect Characterization in Fully Encapsulated CdZnTe

Publication Year: 2013, Page(s):2870 - 2874
Cited by:  Papers (3)
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Fully-encapsulated CZT crystals were grown by vertical Bridgman technique using boron oxide as encapsulant for preventing material decomposition. To detect possible effects of boron on the crystal microstructure, we performed current-voltage measurements and Photo-Induced Current Transient Spectroscopy measurements on samples grown by boron oxide encapsulated vertical Bridgman (set EVB) and standa... View full abstract»

• ### Design Considerations and Testing of Virtual Frisch-Grid CdZnTe Detector Arrays Using the H3D ASIC

Publication Year: 2013, Page(s):2875 - 2882
Cited by:  Papers (2)
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We discussed the design implementation and results from testing 2 × 2-, 3 × 3-, and 2 × 4-arrays of 6×6 ×15 mm3 CdZnTe virtual Frisch-grid detectors. In these measurements we employed a data acquisition system based on the H3D ASIC developed by BNL's Instrumentation Division in collaboration with the University of Michigan for 3D position-sensitive det... View full abstract»

• ### Timing Performance of TlBr Detectors

Publication Year: 2013, Page(s):2883 - 2887
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The timing performance of TlBr detectors was evaluated at room temperature (22 °C). 0.5-mm-thick planar TlBr detectors with Tl circular electrodes with a diameter of 3 mm were fabricated from TlBr crystals grown by the traveling molten zone method using a zone-purified material. The pulse rise time of the TlBr detector was measured using a digital oscilloscope as the cathode surf... View full abstract»

• ### Low Energy X-Ray and $gamma$-Ray Detectors Fabricated on n-Type 4H-SiC Epitaxial Layer

Publication Year: 2013, Page(s):2888 - 2893
Cited by:  Papers (14)
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Schottky barrier diode (SBD) radiation detectors have been fabricated on n-type 4H-SiC epitaxial layers and evaluated for low energy x- and γ-rays detection. The detectors were found to be highly sensitive to soft x-rays in the 50 eV to few keV range and showed 2.1 % energy resolution for 59.6 keV gamma rays. The response to soft x-rays for these detectors was significantly higher than that... View full abstract»

• ### Full-Scale Hot Cell Test of an Acoustic Sensor Dedicated to Measurement of the Internal Gas Pressure and Composition of a LWR Nuclear Fuel Rod

Publication Year: 2013, Page(s):2894 - 2897
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A full-scale hot cell test of the internal gas pressure and composition measurement by an acoustic sensor was carried out successfully between 2008 and 2010 on irradiated fuel rods in the LECA-STAR facility at CADARACHE Centre. The acoustic sensor has been specially designed in order to provide a non-destructive technique to easily carry out the measurement of the internal gas pressure and gas com... View full abstract»

• ### Toward VIP-PIX: A Low Noise Readout ASIC for Pixelated CdTe Gamma-Ray Detectors for Use in the Next Generation of PET Scanners

Publication Year: 2013, Page(s):2898 - 2904
Cited by:  Papers (10)
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VIP-PIX will be a low noise and low power pixel readout electronics with digital output for pixelated Cadmium Telluride (CdTe) detectors. The proposed pixel will be part of a 2D pixel-array detector for various types of nuclear medicine imaging devices such as positron-emission tomography (PET) scanners, Compton gamma cameras, and positron-emission mammography (PEM) scanners. Each pixel will inclu... View full abstract»

• ### An Analog Delay Compensation System to Reduce the Effect of Variable Transit Time in PMTs

Publication Year: 2013, Page(s):2905 - 2911
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Photomultiplier transit time variation due to different high-voltage settings is a significant problem that degrades the performance of the systems that try to recognize fast image patterns in arrays of this type of photosensors. This effect is especially harmful for the performance of the trigger system of Cherenkov telescope cameras. With the aim of overcoming this effect, an electronic system h... View full abstract»

• ### An All-Digital Coincidence-Selection and Coincidence-Trigger Generation for a Small Animal RPC-PET Camera

Publication Year: 2013, Page(s):2912 - 2917
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The time resolution for gamma photon pairs of a detector based on resistive plate chamber technology is close to 300 ps FWHM. This allows a tight time window for coincidence detection, reducing the number of random coincidences observed and the overall noise of the acquired image. We implemented, inside a Xilinx Virtex-5 field programmable gate array, a fully programmable coincidence-trigger syste... View full abstract»

• ### Self-Adjusting Bias-Resistor Unit for a Semiconductor Detector

Publication Year: 2013, Page(s):2918 - 2922
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A self-adjusting resistor unit is described that stabilizes the bias voltage of a semiconductor detector, while always keeping the parallel thermal noise of the bias resistor significantly below the detector shot noise. The user is exempted from adjusting the bias resistor to the detector leakage current for achieving optimum operating conditions. Moreover, the unit avoids the drop of the operatio... View full abstract»

• ### Silicon Drift Detectors for Readout of Scintillators in Gamma-Ray Spectroscopy

Publication Year: 2013, Page(s):2923 - 2933
Cited by:  Papers (12)
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In this work, we report on a new development of Silicon Drift Detectors (SDDs) for gamma-ray spectroscopy with space science applications. The research is supported by the European Space Agency through the Technology Research Programme (TRP). The final goal of the development is the realization of monolithic arrays of SDDs which will be assembled to readout large (2” and 3”) LaBr View full abstract»

• ### Validation of Geant4 Simulation of Electron Energy Deposition

Publication Year: 2013, Page(s):2934 - 2957
Cited by:  Papers (12)
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Geant4-based simulations of the energy deposited by electrons in various materials are quantitatively compared to high-precision calorimetric measurements taken at Sandia Laboratories. The experimental data concern electron beams of energy between a few tens of kilolectron volt and 1 MeV at various incidence angles. Two experimental scenarios are evaluated: the longitudinal energy deposition patte... View full abstract»

• ### Correlating the Luminosity Parameters to Pulse Shape Discrimination

Publication Year: 2013, Page(s):2958 - 2965
Cited by:  Papers (1)
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Monte Carlo simulations were used to investigate the correlation between luminosity parameters and pulse shape discrimination (PSD) and subsequently compared with experimental results from CsI:Tl. Luminosity intensity parameters Af, As (fast and slow initial luminosities) and temporal luminosity parameters τf, τs (fast and slow decay time constants) o... View full abstract»

• ### Radioactive Decays in Geant4

Publication Year: 2013, Page(s):2966 - 2983
Cited by:  Papers (8)
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The simulation of radioactive decays is a common task in Monte-Carlo systems such as Geant4. Usually, a system either uses an approach focusing on the simulations of every individual decay or an approach which simulates a large number of decays with a focus on correct overall statistics. The radioactive decay package presented in this work permits, for the first time, the use of both methods withi... View full abstract»

• ### Validation of Geant4-Based Radioactive Decay Simulation

Publication Year: 2013, Page(s):2984 - 2997
Cited by:  Papers (8)
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Radioactive decays are of concern in a wide variety of applications using Monte-Carlo simulations. In order to properly estimate the quality of such simulations, knowledge of the accuracy of the decay simulation is required. We present a validation of the original Geant4 Radioactive Decay Module, which uses a per-decay sampling approach, and of an extended package for Geant4-based simulation of ra... View full abstract»

• ### Fiber-Coupled, Time-Gated ${hbox {Al}}_{2}{hbox {O}}_{3}!:!{hbox {C}}$ Radioluminescence Dosimetry Technique and Algorithm for Radiation Therapy With LINACs

Publication Year: 2013, Page(s):2998 - 3007
Cited by:  Papers (1)
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An original algorithm for real-time In Vivo Dosimetry (IVD) based on Radioluminescence (RL) of dosimetric-grade Al2O3:C crystals is described and demonstrated in reference conditions with 12-MV photon beams from a Saturne 43 linear accelerator (LINAC), simulating External Beam Radiation Therapy (EBRT) treatments. During the course of irradiation, a portion of electrons is tra... View full abstract»

• ### Detection of Alpha Particles and Low Energy Gamma Rays by Thermo-Bonded Micromegas in Xenon Gas

Publication Year: 2013, Page(s):3008 - 3013
Cited by:  Papers (1)
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Micromegas is a type of micro-pattern gaseous detector currently under R&D for applications in rare event search experiments. Here we report the performance of a Micromegas structure constructed with a micromesh thermo-bonded to a readout plane, motivated by its potential application in two-phase xenon detectors for dark matter and neutrinoless double beta decay experiments. The study is carri... View full abstract»

• ### Fuzzy-Logic Radioisotope Identifier for Gamma Spectroscopy in Source Search

Publication Year: 2013, Page(s):3014 - 3024
Cited by:  Papers (9)
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Detection and identification of radioactive nuclear materials in urban searches can be fully performed with a portable gamma ray detector-spectrometer. Due to limited acquisition time and, as a consequence, low signal to noise ratio (SNR), development of fast and accurate real-time radioisotope identifier (RIID) algorithms is essential for automated source detection. In this paper, we evaluate the... View full abstract»

## Aims & Scope

IEEE Transactions on Nuclear Science focuses on all aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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