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Friday, August 27, 2021 | History

4 edition of Hard X-ray and gamma-ray detector physics and applications found in the catalog.

Hard X-ray and gamma-ray detector physics and applications

22-23 July 1998, San Diego, California

by

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Published by SPIE in Bellingham, Wash., USA .
Written in English

    Subjects:
  • X-ray optics -- Congresses.,
  • Gamma ray detectors -- Congresses.,
  • Optical detectors -- Congresses.,
  • Semiconductors -- Congresses.

  • Edition Notes

    Includes bibliographical references and index.

    StatementF. Patrick Doty, Richard B. Hoover, chairs/editors ; sponsored ... by SPIE--the International Society for Optical Engineering.
    SeriesSPIE proceedings series ;, v. 3446, Proceedings of SPIE--the International Society for Optical Engineering ;, v. 3446.
    ContributionsDoty, F. Patrick., Hoover, Richard B., Society of Photo-optical Instrumentation Engineers.
    Classifications
    LC ClassificationsTA1775 .H5218 1998
    The Physical Object
    Paginationviii, 268 p. :
    Number of Pages268
    ID Numbers
    Open LibraryOL70509M
    ISBN 100819429015
    LC Control Number99170363
    OCLC/WorldCa39513512


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Hard X-ray and gamma-ray detector physics and applications Download PDF EPUB FB2

Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIIIAuthor: Larry A. Franks, Arnold Burger, Ralph B. James, H.

Bradford Barber, F. Patrick Doty, Hans Roehrig. Gamma-Ray Detector Physics and Applications. Editor(s): Room temperature semiconductor detectors for hard x-ray astrophysics Silicon detector probe for gamma-ray and x-ray backscatter radiation Author(s): Eugenia T.

Halmagean; Cristian C. Lazarovici; Doina N. Lazarovici; Valerica Cimpoca; Marian N. Udrea-Spinea. Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, Conference Details.

San Diego Convention Center. San Diego, California, United States. 1 - 5 August Search Program: Conference Events go. Conference Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII.

Monday - Wednesday 2 - 4 August Important. We are developing detectors based on bulk superconducting absorbers coupled to superconducting transition edge sensors (TES) for high-resolution spectroscopy of hard X-rays and soft gamma-rays.

We have achieved an energy resolution of 70 eV FWHM at 60 keV using a 1 x 1 x mm{sup 3} Sn absorber. A variety of CdZnTe and CdTe detector arrays were fabricated at NASAGSFC for use in hard X-ray and gamma-ray astronomy.

Mosaic, pixel, and 3-D position-sensitive detector arrays were built to demonstrate the capabilities for high-resolution imaging and spectroscopy for 10 to 2. MeV. This paper will summarize the different arrays and their applications for instruments being developed at Cited by:   - Proc. SPIEHard X-Ray, Gamma-Ray, and Neutron Detector Physics XV, H The National Security Technologies, LLC, Remote Sensing Laboratory has recently used an array of six small-footprint (1-inch diameter by 3-inch long) cylindrical crystals of thallium-doped sodium iodide scintillators to obtain angular information from discrete.

high energy resolution, and so are used in X-ray analysis, X-ray astronomical observation, physics experiments, etc. The hard X-ray region with energy higher than soft X-rays is utilized in industrial and medical equipment because of high penetration efficiency through objects.

Scintillator detectors are widely used in these applications. A single high-energy instrument based on rotating modulation collimators with germanium semiconductor spectrometers as the detectors can provide high angular resolution (hard X-ray. The rapid development of x-ray optics also has been symbiotic with the development of detectors and compact sources.

Detectors developed for particle physics, medicine, and crystallography have found application across the diff erent fields. Similarly, the increasing capabilities of x-ray systems have stimulated the development of new sci. X-ray and gamma-ray response of a 2×2 LaBr3:Ce scintillation detector for nuclear physics experiments.

The detector prototype has a modular structure and implements a real-time. CdTeCZT based spectroscopic two-dimensional (2D)three-dimensional (3D) imagers when operated in the Compton regime can work as high performance scattering polarimeters, for high-energy astrophysics.

Polarimetry in high-energy astrophysics has been little explored. To date, X- and gamma;-ray source emissions have been studied almost exclusively through spectral, imaging, and timing analysis.

Hard X-ray, gamma-ray and neutron detector physics. X-ray and gamma-ray detectors and applications. Responsibility: Ralph B. James, Larry A. Franks, Arnold Burger, chairseditors ; sponsored and published by SPIE--the International Society for Optical Engineering.

Hard X-ray and gamma-ray detector physics and applications book CdZnTe detector technology has been developed at NASA Goddard for imaging and spectroscopy applications in hard x-ray and gamma ray astronomy. A CdZnTe strip detector array with capabilities for arc second imaging and spectroscopy has been built as a prototype for a space flight gamma ray burst instrument.

CdZnTe detectors also have applications for medical imaging. Box 4 shows the number of X-ray photons that pass through both grids and reach the detector as a function of time while the instrument rotates. Note the changing period of the variations as the point source in Box 1 appears to move across the bar pattern.

First, it appears to move nearly parallel to the probability bars and produces a gradually varying counting rate in the detector. In gamma-ray spectroscopy, the energy of incident gamma-rays is measured by a detector.

By comparing the measured energy to the known energy of gamma-rays produced by radioisotopes, the identity of the emitter can be determined. This technique has many applications, particularly in situations where rapid nondestructive analysis is required. Proc. SPIEHard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII, (30 September ); doi: Read Abstract Pixelated Cadmium Zinc Telluride (CZT) detectors provide the opportunity to perform spectroscopic imaging for discriminating one radioactive material from another.

Figure 2. An imaging x-ray detector is essentially a relay of signal quanta. (a) The energy of an x-ray photon, for instance, may be converted in a phosphor to N visible photons, which are captured in a fiber-optic taper, amplified by an image intensifier with gain M, and then read out by a CCD and stored.

(b) A specific configuration is shown. Si detectors are common due to the availability of high-quality materials and mature fabrication processes, but they offer low absorption for hard x-rays above 10 keV.

GaAs can provide increased hard x-ray absorption for the same detector volume due to a higher atomic number. A new 20×20 pixel ASIC has been developed for spectroscopic measurements of hard detector design is optimised for the measurement of X-rays in the 5 keV range. 2 mm thick CZT was selected for this energy range as it stops 85 of X-rays at keV and avoids an overly long electron drift length where there is an increased chance of crystal defects degrading the spectral.

Please use the following format to cite material from this book: Author(s), "Title of Paper," in Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII, edited by Larry A. Franks, Ralph B. James, Arnold Burger, Proceedings of SPIE Vol.

(SPIE, Bellingham, WA, ) Article CID Number. ISSN X ISBN Published by SPIE. The spectrum of the diffuse X- and gamma-ray background has been measured over a band of more than 2 decades with the scintillator detectors of the UCSDMIT instrument aboard the HEAO-1 satellite.

This paper reports on the development, manufacturing and testing of proportional γ-ray detectors filled with gas mixtures based on high-purity xenon. To let the gas mixtures into the detector, a special installation was developed and manufactured, consisting of components designed to work with high-purity gases.

The influence of the gas pressure, its composition (pure Xe or its mixture with. high energy gamma rays. The wavelength range lies between and 10nm and is therefore of the order of distances between molecules and crystal lattice constants.

X-rays with wavelengths longer than 1nm are called soft x-rays, those of shorter wavelengths are considered hard. Hard x-rays may range into the regime of low energy γrays, since the. The electron is ejected with an energy equal to the initial photon energy minus the binding energy of the electron.

This is a useful process for spectroscopy since an output pulse in a detector is produced that is proportional to the gamma-ray energy, as all of the energy of the gamma ray is transferred to the detector.

Gamma- and X-Ray Spectrometry with Semiconductor Detectors. Preface. Introduction. Background material. Experimental setup. Spectrum analysis and energy measurements.

X-Ray And Gamma Detector Systems. FAST ComTec GmbH. The XRCR is a new high performance x-ray detector, preamplifier, and cooler system using a thermoelectrically cooled Si-PIN photodiode as an xray detector.

Also mounted on the 2-stage cooler are the input FET and a. An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic X-rays have a wavelength ranging from 10 picometers to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (30 × 10 15 Hz to 30 × 10 18 Hz) and energies in the range eV to keV.

X-ray wavelengths are shorter than those of UV rays and. Computer Science Applications; Electrical and Electronic Engineering Heavy metal ternary halides for room-temperature x-ray and gamma-ray detection.

in Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV. vol.A, SPIE Conference on Hard X-Ray, Gamma-Ray and SPIE Conference on Hard X-Ray, Gamma-Ray and Neutron Detector. Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an ations of radiography include medical radiography ("diagnostic" and "therapeutic") and industrial r techniques are used in airport security (where "body scanners" generally use backscatter X-ray).

GAMMA-SPECTRA Figure 1. - Idealized Picture of Gamma-Ray Spectrum Showing Only the Photopeak SCINTILLATION SPECTRA The Photopeak If you were to place a monoenergetic source of gamma-rays (e.

Cs) near a scintillation detector, you expect, ideally, a spectrum which is a single photopeak caused by the photoelectric effect in the. Hardbound. This book covers the topics essential to gamma- and x-ray spectrometry as it is now practiced with semiconductor detectors in the energy range from 5keV to 3MeV.

This includes useful physical and mathematical background information, the components of a standard photon spectrometer, spectrum analysis procedures, the energy and efficiency calibration, energy and emission-rate.

The Black Hole Finder Probe (BHFP) mission is intended to survey the local Universe for black holes. One approach to such a survey is a hard X-ray coded aperture imaging telescope operating in the 20 - keV energy band. A sensitive hard X-raygamma ray imaging telescope is also well suited to surveillance applications searching for shielded sources of illicit nuclear materials, for example.

Abstract. Cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) have been regarded as promising semiconductor materials for hard X-ray and γ-ray r, a considerable amount of charge loss in these detectors results in a reduced energy resolution.

Feng, Y, Baciak, JE, Sullivan, C Gardner, GPixelated designs of high pressure xenon gamma-ray spectrometers and position sensing. in Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII.

C, Proceedings of SPIE - The International Society for Optical Engineering, vol.Hard X-Ray and Gamma-Ray Detector Physics and. Not many gamma rays emitted (Gamma-ray multiplicity low) e. decay from a fission source, from stopped radioactive ion beams (ISOL or fragmentation), or de-excitation of isomeric states In-beam spectroscopy: Nucleus is moving Lots of gamma rays emitted (Gamma-ray multiplicity high) e.

compound nucleus reaction, Coulomb excitation. Fukazawa, M. Mizuno, H. Takahashi, N. Kawano, M. Ohno, A. Hirasawa, T. Yamasaki, K. Makishima, M. Kokubun, M. Kawaharada, M. Murashima, R. Miyawaki, T. Yanagida, T.   Quantum X-ray imaging could have a number of uses outside the range of current X-ray technology.

One promise is that it could lower the amount of radiation required for X-ray imaging. This would mean that samples easily damaged by X-rays could be imaged, or samples that require low temperatures; less radiation would mean less heat.

In this study 2-dimensional plasma simulation code was used to find a new approach of x-ray detection method with PDP-like geometry and condition. A conventional PDP geometry consisted of three electrodes was selected and Ne-Xe composition gas was filled the cell-gap.

The Soft Gamma-ray Detector (SGD) is one of ASTRO-H instruments and will feature wide energy band ( keV) at a background level 10 times better than the current instruments on orbit. SGD is complimentary to ASTRO-H's Hard X-ray Imager covering the energy range of keV.

Li, M Abbaszadeh, SEffect of cathode energy spectrum on the depth of interaction estimation and anode signal recovery in CZT detectors. in RB James, M Fiederle, A Burger, SA Payne L Franks (eds), Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX., Proceedings of SPIE - The International Society for Optical Engineering, vol.SPIE, Hard X-Ray, Gamma-Ray, and.

Energy-resolved X-ray detectors: the future of diagnostic imaging Danilo Pacella ENEA-Frascati, Rome, Italy Abstract: This paper presents recent progress in the field of X-ray detectors, which could play a role in medical imaging in the near future, with special attention to the new generation of complementary metal-oxide semiconductor (C-MOS) imagers, working in photon counting, that .