Using standard calibrated geometries to characterize a

Jun 16, 2014A detector model optimization procedure based on matching Monte Carlo simulations with measurements for two experimentally calibrated sample geometries which are frequently used in radioactivity measurement laboratories results in relative agreement within 5% between simulated and measured efficiencies for a high purity germanium detector. The optimization procedure indicated

Get Price

Instrumentation and Facilities California State

Instrumentation and Facilities. Spectrometers / spectrophotometers . NMR. Canberra instrinic germanium detector gamma ray counting system (1995) Canberra NaI(Tl) 3 x 3 well detector (1995) CSUN faculty and students may download the form from this page and submit samples in room 4310.

Get Price

Calibration of A Small Anode Germanium Well Detector

BEGe detectors better for W and T samples but the well detector is adequate Superior detection efficiency inside the well The actual peak count rates limited by sample size Good sample types o Small volume o Heavily concentrated water samples NKS GammaSpec 2017 19-20.9.2017

Get Price

MICRO-DETECTIVE-HX AMETEK, Inc. WMD Detector Selector

Technical Description High-resolution, high-purity germanium (HPGe) detector. Mechanically cooled by miniature Stirling-cycle cooler. Internal GM tube provides gamma dose rate.

Get Price

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 63,

sure the samples to compare the energy resolution and effi-ciency of the commercial detector with the CdZnTe prototype. The p-type germanium detector was in a coaxial geometry, 50 mm in diameter and 33 mm in height. III. URANIUM ENRICHMENTMEASUREMENT Verifying uranium enrichment is critical in international safeguards for material accountancy.

Get Price

USE OF A HIGH-PURITY GERMANIUM

This thesis investigates the ability of a high-purity germanium detector to perform post-detonation forensics on the debris from several types of nuclear weapons 24 hours after detonation. The ultimate result of this analysis would be the deployment of this detector on an autonomous robot for sample collection and remote analysis.

Get Price

Detection of Radioactive Cesium on Granular Particle using

Radioactive Cesium (Cs*) on granular particles were detected using autoradiography, Germanium detector and energy dispersive X-ray spectrometry. The granular particle was included in the suspension of the rainwater tank, which was collected 20 months after the explosion of the Fukushima Dai-ich, Author Ichiro Tanaka Kenji Kikuchi Masakazu zaki Nobuo NIIMURA Takashi ONIZAWA

Get Price

Development of the measurement of radium using a germanium

High-purity germanium detector. The HPGe detector used for this analysis was a coaxial p-type HPGe crystal manufactured by CANBERRA France . As shown in the figure, the samples measured by the HPGe detector were covered by an ethylene-vinyl-alcohol (EVOH) bag so that Rn from samples

Get Price

In Situ Gamma Spectroscopy with ISOCS, an In Situ

Germanium detectors offer stability and high resolution that cannot be obtained with needs of the intended application. The most versatile detector is our new BEGe detector, which give the particularly useful for samples at some distance from the detector, such as overhead pipes. The InSpector 2000 Portable

Get Price

D113 Germanium Point Contact Diode Detector for crystal

D113 Germanium Point Contact Diode Detector for Crystal Set radi This is one item of unused soviet era D113. They have a low Vf similar to or better than old OA81s and work very well in crystal set radios.

Get Price

Determination of Primordial Radionuclides in Natural

employed gamma spectrometer was an n-type coaxial ORTEC high-purity germanium detectorGwith a crystal diameter of 55.1 mm and a thickness of 52.2 mm. For the purpose of decay counting, these types of the detector present a more uniform, efficient cross-section of the detector active volume to samples

Get Price

Gamma-ray activity determination in large volume samples

Gamma-ray activity determination in large volume samples with a germanium-lithium detector A. Cesana, and M. Terrani Anal. Chem., 1977, 49 (8), pp

Get Price

Energy and Efficiency Calibrations for High Purity

by mounting the germanium crystal in a vacuum cryostat, thermally connected to a copper rod or cold finger, . Majority of this type of detectors are the coaxial detector which in NAA is useful for measurement of gamma-rays with energies ranging from about 60 keV 4.0 to MeV .

Get Price

Reinventing germanium avalanche photodetector for

A key element in the integration of microprocessor chips with optical communications circuits is a photodetector to mediate the optical and electronic signals. Germanium photodetectors are very

Get Price

Chapter 1 Infrared Detector Characterization spie

impurity levels in germanium gave rise to devices using the 8- to 14-mm long wavelength IR (LWIR) spectral window and beyond to the 14- to 30-mm very long wavelength IR (VLWIR) region. In 1967 the first comprehensive extrinsic Si detector-oriented paper was published by Soref.4 However, the state of extrinsic Si was not changed signi-ficantly.

Get Price

A Next Step for GRETA A Better Gamma-Ray Detector

Nov 07, 2018The GRETA detector array is designed to surround samples, forming a spherical shell to more completely and precisely measure the energy and 3D position of gamma rays propagating in the detectors. The array will feature 120 germanium crystals arranged in 30 modules. It will incorporate 12 GRETINA detector modules.

Get Price

7. ANALYTICAL METHODS

7. ANALYTICAL METHODS Cs in human samples, a number of analytical methods can be used to measure the cesium radioisotopes directly in the samples without spectrometers are equipped with a high purity germanium detector that is able to separate the

Get Price

Improved gamma-spectroscopy of marine samples via low

The small anode germanium (SAGe) Well detector from Canberra Industries with a cosmic veto supression system was tested on marine particles and water samples. The cosmic-veto suppression system reduced the shielded background by an average of 35 % across the energy spectrum.

Get Price

Cal Poly Physics Department's Virtual Radiation Laboratory

Cal Poly Physics Department's Virtual Radiation Laboratory. The virtual radiation laboratory is a set of javascript programs that allow the user to simulate detecting nuclear radiation. The programs should run on all computers, tablets and some cell phones.

Get Price

GeD Germanium Detector AcronymFinder

How is Germanium Detector abbreviated? GeD stands for Germanium Detector. GeD is defined as Germanium Detector rarely. What does GeD stand for? GeD stands for Germanium Detector. Germanium detectors measure the gamma-ray emissions from these samples, which identify the types of radionuclides present.

Get Price

Comparison of Germanium Detectors for Neutron Activation

----- SECTION I CONCLUSIONS AND RECOMMENDATIONS In instrumental neutron activation analysis (INAA) for mercury in samples composed primarily of water or organics with rela- tively few metallic elements, the large coaxial, lithium- drifted, germanium, solid state detector is preferred because of its greater efficiency.

Get Price

Gamma Sample Changers from Changer Labs handle small

Potential applications for the Changer Lab's Assistant, Gamma Sample Changer Basically any gamma spectroscopy application with significant numbers of samples can benefit if the samples are relatively small and the detector is either HPGe germanium or NaI with solid or well type detectors

Get Price

HPGe Detector, Part I Repair Special Nuclear Material

Sep 16, 2011A high-purity germanium (HPGe) detector is the ultimate instrument for energy spectrometry of gamma radiation. For the nuclear hobbyist, an HPGe opens a window into a fascinating realm of home-accessible, low-intensity nuclear reactions that are obscured by background in other detectors lacking the superlative resolution. Weak alpha sources available without a specific NRC

Get Price

Segmentation of the Outer Contact on P-Type Coaxial

Germanium detector arrays are needed for low-level counting facilities. The practical applications of such user facilities include characterization of low-level radioactive samples. In addition, the same detector arrays can also perform important fundamental physics measurements including the search for rare events like neutrino-less

Get Price

HPGe Detector, Part I Repair Special Nuclear Material

Sep 16, 2011A high-purity germanium (HPGe) detector is the ultimate instrument for energy spectrometry of gamma radiation. For the nuclear hobbyist, an HPGe opens a window into a fascinating realm of home-accessible, low-intensity nuclear reactions that are obscured by background in other detectors lacking the superlative resolution.

Get Price

High-Density Arrays of Germanium Nanowire

DOI 10.1002/adma. High-Density Arrays of Germanium Nanowire Photoresistors** By Boris Polyakov, Brian Daly, Juris Prikulis, Vaclovas Lisauskas, Bonifacas Vengalis, Michael A. Morris, Justin D. Holmes,* and Donats Erts* Here we present for the first time a study of the photoresis-

Get Price

OBSERVATION OF TRITIUM IN GAS/PLASMA LOADED

and ease of use due to vertical mounting, it was the NaI detector that was mostly employed to count the samples while the germanium detector was used only to compare and confirm the values. II.C BETA COUNTING WITH WINDOWLESS GAS COUNTER A drawer type 2πgeometry windowless gas flow proportional counter using

Get Price

GAMMA BACKGROUND STUDIES FOR THE XENON

GAMMA BACKGROUND STUDIES FOR THE XENON EXPERIMENT USING A HIGH PURITY GERMANIUM DETECTOR By Jesse Isaac Angle May 2008 Chair John Yelton Major Physics The XENON Dark Matter Experiment, deployed at the Gran Sasso National Laboratory in Italy on March 2006, is a liquid noble gas detector designed to directly detect dark matter.

Get Price

MEASUREMENT OF CESIUM-137 IN FOODSTUFFS

extent of our measurements was restricted by the number of samples delivered and rate of deliveries.All samples were counted on the detection system shown in Fig. 1A. It is composed of a high-purity germanium detector (59.0-mm wide 296 F.M. SALIH, A.E. PILLAY and K. JAYASEKARA

Get Price

Gamma-Ray Spectrometry Using NaI(Tl) and HPGe

Gamma-Ray Spectrometry Using NaI(Tl) and HPGe Detectors Objectives This experiment will familiarize you with the instrumentation used in gamma-ray spectrometry and with the quantitative aspects of gamma counting. You will also compare the performance of a NaI(Tl) scintillation detector

Get Price

Classic Case