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Monday, July 13, 2020 | History

2 edition of Germanium Detectors found in the catalog.

Germanium Detectors

Atomic Energy of Canada Limited.

Germanium Detectors

Current State of the Art.

by Atomic Energy of Canada Limited.

  • 133 Want to read
  • 30 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesAtomic Energy of Canada Limited. AECL -- 3991
ContributionsFowler, I.L., Mcmath, T.A.
ID Numbers
Open LibraryOL21971494M

Germanium’s superior electron and hole mobility offers a new means by which we can develop higher performance devices. 4 In the recent years, considerable progress has been made toward replacing the silicon in transistors, photovoltaics, and IR detectors with germanium. References. 1) Haller, E. E. Mater. Sci. Semicond. Process. , 9, Germanium-based semiconductor detectors are most commonly used where a very good energy resolution is required, especially for gamma spectroscopy, as well as x-ray spectroscopy. In gamma spectroscopy, germanium is preferred due to its atomic number being much higher than silicon and which increases the probability of gamma ray interaction.

Try the new Google Books. Check out the new look and enjoy easier access to your favorite features. Try it now. No thanks. Try the new Google Books Buy eBook - $ Get this book in print 10 Intrinsic Silicon and Germanium Detectors. 11 Extrinsic Silicon and Germanium Detectors. 12 Photoemissive Detectors. 13 IIIV 2/5(1). GERMANIUM DETECTORS RHESSI’s spectrometer is an array of segmented coaxial germanium detectors. When ultrapure germanium is at cryogenic temperatures, no electron-hole pairs are in the conduction band, but a hard X-ray or gamma ray interacting in the crystal will release one or more energetic electrons, which lose energy by creating free.

Semiconductor detectors can provide better spectroscopic performance than scintillation or gas-filled detectors because of the small ionization energy required to generate each electron-hole pair. Indeed, cryogenically cooled high-purity germanium detectors have played the dominant role whenever the best gamma-ray spectroscopy is required. The Germanium Detector Array (or GERDA) experiment is searching for neutrinoless double beta decay (0νββ) in Ge at the underground Laboratori Nazionali del Gran Sasso (LNGS). Neutrinoless beta decay is expected to be a very rare process if it occurs. The collaboration predicts less than one event each year per kilogram of material, appearing as a narrow spike around the 0νββ Q-value.


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Germanium Detectors by Atomic Energy of Canada Limited. Download PDF EPUB FB2

Product details Paperback: pages Publisher: Springer; Softcover reprint of the original 1st ed. edition (November 5, ) Language: English ISBN ISBN Product Dimensions: x x inches Shipping Weight: ounces (View shipping rates and.

High purity germanium remains the material of choice for the detection of photons in the range of MeV or higher, down to the hard X-ray range.

Since the operation of HPGe-based detectors is possible only at or below the liquid nitrogen temperature, their advantage is mainly the resolution, which matches the Fano factor if appropriate cooled electronic readout is by: 2. "Phonon Lifetime and Collection in Germanium Particle Detectors at 20 m" by Tom Shutt, Peter D.

Barnes Jr. et al. We are developing low temperature particle detectors in which the ionization and the phonons created by a particle interaction are simultaneously measured. Fourches, N.

and Zielińska, M. () High Purity Germanium From Gamma-Ray Detection to Dark Matter Subterranean Detectors. Germanium Short Form Catalog in PDF Format ​ J16 Series detectors are high-quality Germanium photodiodes designed for the to nm wavelength range.

For applications where temperature stability of response is important near the cutoff, thermoelectrically cooled detectors are available. type detectors are now available with the conventional µm P-type contact and a new proprietary thin contact equivalent to about 10 µm of inactive are known as the PROFILE GEM F and PROFILE GEM FX series respectively.

ORTEC® The Best Choice of High Purity Germanium (HPGe) Detector Figure 1. P-type HPGe crystal geometries. Figure 2. Table 1. Detectors Studied Detector Number Diameter (mm) Length (mm) NA NB PA PA PA EFFICIENCY AND RESOLUTION OF GERMANIUM DETECTORS AS A FUNCTION OF ENERGY AND INCIDENT GEOMETRY R.M.

Keyser New Product Development, ORTEC, South Illinois Avenue, Oak Ridge. Germanium detectors are semiconductor diodes having a p-i-n structure in which the intrinsic (i) region is sensitive to ionizing radiation, particularly x rays and gamma rays.

Under reverse bias, an electric field extends across the intrinsic or depleted region. When photons interact with the material within the depleted volume of a detector. What is High Purity Germanium Detector – HPGe – Definition.

Decem by Nick Connor. High-purity germanium detectors (HPGe detectors) are the best solution for precise gamma and x-ray spectroscopy. HPGe detectors must operate at the very low. About the book Description The use of lasers which emit infra-red radiation and sophisticated detectors of IR radiation is increasing dramatically: they are being used for long-distance fibre-optic communications and remote environmental monitoring and sensing.

Germanium Detector Operating Notes ( to µm) General J16 Series detectors are high-quality Germanium photodiodes designed for the to nm wavelength range. Detailed specifications are available for J16 Series room temperature detec-tors, parallel output arrays, Avalanche photodiodes and "two color" detectors.

Germanium detectors are mostly used for gamma spectroscopy in nuclear physics, as well as x-ray 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.

Each detector type has its own advantages and disadvantages. The NaI(Tl) detectors are generally inferior to Ge(Li) or HPGe detectors in many respects, but are superior to Ge(Li) or HPGe detectors in cost, ease of use, and durability.

Germanium-based detectors generally have much higher resolution than NaI(Tl) detectors. Lithium-Drifted Germanium Detectors: Their Fabrication and Use: an Annotated Bibliography. Boston, MA: Springer US, A lithium-drifted germanium detector is a semiconductor de­ vice which operates at liquid nitrogen temperature, and is used for detection of nuclear radiation, mostly gamma ray.

The detection occurs when the y-ray undergoes an interaction in the intrinsic or I region of the. Divided into four sections, the book covers fundaments of IR detection, IR thermal detectors, IR photon detectors, and focal plane arrays.

It begins with a tutorial introduction to essential of different types of IR detectors and systems. Panel on the Use of Lithium-Drifted Germanium Gamma-Ray Detectors for Research in Nuclear Physics ( Vienna).

Lithium-drifted germanium detectors. Vienna, International Atomic Energy Agency, (OCoLC) Material Type: Conference publication: Document Type: Book: All Authors / Contributors: International Atomic Energy Agency.

Applied Gamma-Ray Spectrometry covers real life application of the gamma-ray and the devices used in their experimental studies. This book is organized into 9 chapters, and starts with discussions of the various decay processes, the possible interaction mechanisms of gamma radiation with matter, and the intrinsic and extrinsic variables, which affect the observed gamma-ray and X-ray spectra.

germanium detector for a long time. Although there is little difference in detector performance between HPGe and Ge(Li), the maintenance of Ge(Li) is pretty inconvenient, which has made manufacturers stop producing them.

Configurations A. Hyper-Pure Germanium (HPGe) detector fabrication [4] HPGe crystal were first developed in the mid s. Purchase Semiconductors for Room Temperature Nuclear Detector Applications, Volume 43 - 1st Edition.

Print Book & E-Book. ISBNavailable for germanium at an earlier date, the first high-performance extrin-sic detectors were based on Ge:Hg with activation energy for the Hg acceptor of eV. Extrinsic photoconductive response from copper, zinc, and gold impurity levels in germanium gave rise to devices using the 8- to mm long.

The germanium isotope 76 Ge is one of the rare nuclei that undergoes double beta decay and very conveniently one can use it to fabricate an ionization detector with the best resolution among all detectors used in particle physics.

In this way, the searched decay takes place in the detector itself ensuring very high detection efficiency.Germanium detectors are semiconductor diodes having a P-I-N structure in which the Intrinsic (I) region is sensitive to ionizing radiation, particularly X rays and gamma rays. Under reverse bias, an electric field extends across the intrinsic or depleted region.

When photons interact with the material within the depleted volume of a.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.