scholarly journals Instrumentation for the Measurement of High Energy Phenomena on NASA Spacecraft

1971 ◽  
Vol 41 ◽  
pp. 134-134
Author(s):  
Albert G. Opp ◽  
Nancy G. Roman
Keyword(s):  
Spatial Resolution ◽  
Spectral Distribution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
High Energy ◽  
Temporal Variations ◽  
X Ray ◽  
Sky Survey ◽  
Beryllium Window ◽  
Proportional Counters

High energy astrophysical observations supported by the National Aeronautics and Space Administration will be conducted primarily from the Small Astronomy Satellites (SAS) and the High Energy Astronomy Observatories (HEAO). At the present time, three Small Astronomy Satellites have been approved for flight. The first (SAS A) will carry a set of collimated proportional counters to conduct a high sensitivity, high spatial resolution, all sky survey for X-ray sources, to search for temporal variations in the source intensity, and to measure the spectral distribution of sources in the energy range 1 to 20 keV. The spacecraft will carry two collimator systems of 1 by 10 deg and 10 by 10 deg fullwidth. The proportional counters are gas-filled beryllium window tubes. SAS A is planned for launch in late 1970.

Applications of a Laboratory X-ray Micropsobe to Materials Analysis

1988 ◽  
Vol 32 ◽  
pp. 115-120 ◽  
Author(s):  
D. A. Carpenter ◽  
M. A. Taylor ◽  
C. E. Holcombe
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
Specimen Preparation ◽  
X Rays ◽  
Glass Capillary ◽  
Materials Analysis ◽  
X Ray ◽  
Small Glass

A laboratory-based X-ray microprobe, composed of a high-brilliance microfocus X-ray tube, coupled with a small glass capillary, has been developed for materials applications. Because of total external reflectance of X rays from the smooth inside bore of the glass capillary, the microprobe has a high sensitivity as well as a high spatial resolution. The use of X rays to excite elemental fluorescence offers the advantages of good peak-to-background, the ability to operate in air, and minimal specimen preparation. In addition, the development of laboratory-based instrumentation has been of Interest recently because of greater accessibility when compared with synchrotron X-ray microprobes.

Effect of Coating with Hydroxyapatite on the Bonding of Bone to Implant

2012 ◽  
Vol 706-709 ◽  
pp. 1661-1666
Author(s):  
Abdelilah Benmarouane ◽  
Pierre Millet ◽  
Thomas Buslaps ◽  
Alain Lodini ◽  
Veijo Honkimäki
Keyword(s):  
Synchrotron Radiation ◽  
Spatial Resolution ◽  
Orthopaedic Surgery ◽  
High Spatial Resolution ◽  
High Energy ◽  
Direct Connection ◽  
X Ray Diffraction ◽  
X Ray ◽  
Natural Bone ◽  
Non Destructive

The aim of the present study was to study the interface implant-bone by synchrotron radiation, the implant has two faces the first one coated with hydroxyapatite and the second uncoated. In orthopaedic surgery, Titanium (Ti-Al-4V) implants are currently coated with hydroxyapatite (HAp), Ca10(PO4)6(OH)2, in order to obtain a stable and functional direct connection between the bone and the implant. At the implant-bone interface, the new bone reconstituted after two months of implantation must have the same properties like the natural bone in order to accept the implant. Therefore we studied the texture of the reconstituted bone crystals at the interface applying non destructive x-ray diffraction. The required high spatial resolution was achieved utilizing high-energy synchrotron radiation on ID15 at ESRF in Grenoble, France.

Macro and Micro Full Field X-Ray Fluorescence with an X-Ray Pinhole Camera Presenting High Energy and High Spatial Resolution

2014 ◽  
Vol 86 (21) ◽  
pp. 10892-10899 ◽  
Author(s):  
Francesco Paolo Romano ◽  
Claudia Caliri ◽  
Luigi Cosentino ◽  
Santo Gammino ◽  
Lorenzo Giuntini ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Energy ◽  
Pinhole Camera ◽  
Full Field ◽  
X Ray

High spatial resolution, high energy synchrotron x-ray diffraction characterization of residual strains and stresses in laser shock peened Inconel 718SPF alloy

2012 ◽  
Vol 111 (8) ◽  
pp. 084904 ◽  
Author(s):  
Amrinder S. Gill ◽  
Zhong Zhou ◽  
Ulrich Lienert ◽  
Jonathan Almer ◽  
David F. Lahrman ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Energy ◽  
Laser Shock ◽  
X Ray Diffraction ◽  
X Ray ◽  
Residual Strains

scholarly journals Developing a bright 17 keV x-ray source for probing high-energy-density states of matter at high spatial resolution

2015 ◽  
Vol 22 (4) ◽  
pp. 043114 ◽  
Author(s):  
C. M. Huntington ◽  
H.-S. Park ◽  
B. R. Maddox ◽  
M. A. Barrios ◽  
R. Benedetti ◽  
...  
Keyword(s):  
Energy Density ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Energy ◽  
High Energy Density ◽  
X Ray

scholarly journals High spatial resolution inorganic scintillator detector for high‐energy X‐ray beam at small field irradiation

2020 ◽  
Vol 47 (3) ◽  
pp. 1364-1371
Author(s):  
Sree Bash Chandra Debnath ◽  
Carole Fauquet ◽  
Agnes Tallet ◽  
Anthony Goncalves ◽  
Sébastien Lavandier ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Energy ◽  
Small Field ◽  
X Ray ◽  
Inorganic Scintillator ◽  
Scintillator Detector

scholarly journals X-ray Morphology of Clusters of Galaxies

1992 ◽  
Vol 9 ◽  
pp. 205-209
Author(s):  
H. Böhringer ◽  
R.A. Schwarz ◽  
U.G. Briel ◽  
H. Ebeling ◽  
W. Voges
Keyword(s):  
Physical Properties ◽  
Galaxy Clusters ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Morphological Structure ◽  
Clusters Of Galaxies ◽  
X Ray ◽  
Sky Survey ◽  
First Results

AbstractThe ROSAT observatory with its high spatial resolution X-ray telescope is an ideal instrument for the study of clusters of galaxies. In the first part of the mission an All Sky X-ray Survey was conducted with ROSAT. Here we present first results of observations of Virgo, Perseus and some other clusters of galaxies from the All Sky Survey. These data illustrate the capabilities of the ROSAT observatory for studies of the morphological structure and physical properties of galaxy clusters.

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