Absolute efficiency calibration of high-purity germanium ...

High-purity germanium (HPGe) detectors due to their excellent resolution and highly improved efficiencies relative to NaI detectors have become an essential tool for the analysis of radioactive samples by using gamma-ray spectrometric techniques. To enable these detectors for use in many applications, different types of calibrations are required.

Chapter 8 Hyper-Pure Germanium Detector

Standard High Purity Germanium Detectors Mirion offers the widest choice of High Purity Germanium (HPGe) detector types in the industry. Employing the appropriate technology in both materials and processing techniques, we can offer the optimum detector for your needs.

Five things you need to know about using high-purity ...

The first gamma ray spectrometer is the one dimensional High Purity Germanium spectrometer. The detector type is High Purity Germanium, which is a semiconductor that must be temperature controlled with liquid Nitrogen to 77 K due to excessive leakage current at higher temperatures 2. Because

High Purity Germanium (HPGe) Detectors - CAEN SyS

HPGe detector with LN2 cryostat Source: canberra.com. High-purity germanium detectors (HPGe detectors) are the best solution for precise gamma and x-ray spectroscopy.In comparison to silicon detectors, germanium is much more efficient than silicon for radiation detection due to its atomic number being much higher than silicon and due to lower average energy necessary to create an …

GEM P-type Coaxial High Purity Germanium (HPGe) Radiation ...

To complete the gamma spectroscopy laboratory set CAEN SyS includes in its offer a wide choice of High Purity Germanium detectors (HPGe). Germanium detectors are semiconductor diodes having a p-i-n structure in which the intrinsic (I) region is sensitive to ionizing radiation, particularly X …

High Purity Germanium Detectors - HPGe - nuclear-power.net

Broad Energy Germanium Detectors (BEGe) by Canberra - Mirion Technologies, Inc. The CANBERRA Broad Energy Ge (BEGe) Detector covers the energy range of 3 keV to 3 MeV like no other. The resolution at low energies is equivalent to that of our Low Ener...

HPGe Detectors vs NaI(Tl) Scintillation Detectors

A high-purity germanium detector was modeled in MCNP6. Using this model and the source term, the predicted response spectrum for each fallout composition was generated and compared using Genie spectroscopy software in an attempt to find differentiating features between them.

REQUEST FOR QUOTATION FOR GAMMA SPECTROMETRY …

The invention discloses a high purity germanium detector, which comprises a high purity germanium crystal, a first electrode and a second electrode, and a conductive protection ring, wherein the high purity germanium crystal has an intrinsic-region exposed surface; the first electrode and the second electrode are respectively connected with a first contact electrode and a second contact ...

Comparison of a High Purity Germanium Gamma Ray ...

Fabrication Process Development for High-Purity Germanium Radiation Detectors with Amorphous Semiconductor Contacts by Quinn Looker Doctor of Philosophy in Nuclear Engineering University of California, Berkeley Professor Kai Vetter, Chair High-purity germanium (HPGe) radiation detectors are well established as a valuable tool in

Gamma spectroscopy - Wikipedia

Umicore created the world's purest germanium crystal. With a purity of 99.99999999999% (13N) it is used to detect and analyse gamma rays in particle accelerators, nuclear power plants and …

SPECIAL NUCLEAR MATERIAL IMAGING USING A HIGH …

While silicon detectors cannot be thicker than a few millimeters, germanium can have a depleted, sensitive thickness of centimeters, and therefore can be used as a total absorption detector for gamma rays up to few MeV. These detectors are also called high-purity germanium detectors (HPGe) or hyperpure germanium detectors.

On Two Cryogenic Systems of High Purity Germanium Detector

High-purity germanium (HPGe) detectors are the recognized gold standard for detection and identification of characteristic gamma rays from nuclear or radiological sources. No other detector comes close to matching their extremely high resolution and sensitivity. However, until recently, their use outside the laboratory has been limited.

Resolution and Efficiency of High Purity Germanium Detector

Two cryogenic systems of high purity germanium detector, liquid nitrogen and mechanical cooler, are expounded, to- gether with explanations of merits and demerits for each kind of cooling methods.

Broad Energy Germanium Detectors (BEGe) - Environmental …

NATS offers a complete range in High Purity Germanium Detectors (HPGE): The High Purity Germanium Spectroscopy Detector is used in the detection and analysis of Gamma-ray of environmental objects in nuclear energetics, products of industry and agriculture, medicine, etc.

High Purity Germanium: From Gamma-Ray Detection to Dark ...

only high purity germanium (HPGe) detectors have both the resolution and efficiency needed to discriminate RGPu from WGPu. In WGPu, the Pu-239 is the predominant isotope, having small amounts of Pu-240 (<7% of the Pu). The amount of Pu-240 is minimized to reduce the rate of spontaneous fissions that occur, resulting in a lower

CN104749606A - High purity germanium detector - Google …

Gamma-ray energies will be measured with a High-Purity Germanium (HPGe) detector and research-grade electronics. The theory of response characteristics is explained, and the high-resolution measurement results are contrasted with those from a sodium iodide (NaI) ... High-Resolution Gamma-Ray Spectroscopy.

Germanium Detectors - mirion.com

Jul 15, 2016· High-sensitivity detectors are portable devices that use high-purity germanium to provide high-resolution gamma spectroscopy to identify radionuclides. These devices provide responders with more resolved spectra than detectors that use other materials. Included reports: highlight, summary, focus group report, and assessment report.

On Two Cryogenic Systems of High Purity Germanium …

The advantages of position sensitivity coupled with the fine spectral resolution from high-purity germanium can be exploited to produce a tracking detector for use with a variety of biochemically ...

High Purity Germanium (HPGe) Radiation Detectors ...

Characterization of Mechanically Cooled High Purity Germanium (HPGe) Detectors at Elevated Temperatures Joseph Benjamin McCabe University of Tennessee - Knoxville, [email protected] This Dissertation is brought to you for free and open access by the Graduate School at Trace: Tennessee Research and Creative Exchange. It has been

High purity germanium detector - Google Patents

Technical Description This collaborative research has two specific objectives: (1) measuring charge carrier drift mobilities in arbitrary directions for better modeling of electronic signal formation in High Purity Germanium (HPGe) detectors; and (2) investigating the possibility of particle identification utilizing ionization signal alone in ...