scholarly journals A NEW DEVICE FOR RADIOGRAPHY USING DIGITAL MEMORY (II. Supplemental Tool for X-ray Examination)

1982 ◽  
Vol 38 (3) ◽  
pp. 382-386
Author(s):  
HIROAKI KUDO ◽  
MASAKATSU HATAGAWA ◽  
MINORU HOSOGAI
Keyword(s):  
X Ray ◽  
New Device ◽  
Digital Memory

scholarly journals A new device to mount portable energy-dispersive X-ray fluorescence spectrometers (p-ED-XRF) for semi-continuous analyses of split (sediment) cores and solid samples

2017 ◽  
Vol 6 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Philipp Hoelzmann ◽  
Torsten Klein ◽  
Frank Kutz ◽  
Brigitta Schütt
Keyword(s):  
Spatial Resolution ◽  
Atlantic Coast ◽  
Sediment Cores ◽  
Ccd Camera ◽  
Energy Dispersive ◽  
Solid Samples ◽  
Industrial Property ◽  
X Ray ◽  
New Device ◽  
Sample Chamber

Abstract. Portable energy-dispersive X-ray fluorescence spectrometers (p-ED-XRF) have become increasingly popular in sedimentary laboratories to quantify the chemical composition of a range of materials such as sediments, soils, solid samples, and artefacts. Here, we introduce a low-cost, clearly arranged unit that functions as a sample chamber (German industrial property rights no. 20 2014 106 048.0) for p-ED-XRF devices to facilitate economic, non-destructive, fast, and semi-continuous analysis of (sediment) cores or other solid samples. The spatial resolution of the measurements is limited to the specifications of the applied p-ED-XRF device – in our case a Thermo Scientific Niton XL3t p-ED-XRF spectrometer with a maximum spatial resolution of 0.3 cm and equipped with a charge-coupled device (CCD) camera to document the measurement spot. We demonstrate the strength of combining p-ED-XRF analyses with this new sample chamber to identify Holocene facies changes (e.g. marine vs. terrestrial sedimentary facies) using a sediment core from an estuarine environment in the context of a geoarchaeological investigation at the Atlantic coast of southern Spain.

A double crystal monochromator with self-compensation mechanism for ELETTRA XRD2 beamline

2010 ◽  
Vol 1 (MEDSI-6) ◽  
Author(s):  
A. Gambitta
Keyword(s):  
Vertical Displacement ◽  
Compensation Mechanism ◽  
Input Beam ◽  
Output Beam ◽  
Double Crystal ◽  
X Ray ◽  
New Device ◽  
Double Crystal Monochromator ◽  
Fixed Distance

A prototype of a new double crystal monochromator (DCM) has been designed and developed for the second crystallography beamline (XRD2) at ELETTRA. The new device has to cover the 8–35 keV X-ray range. Since the corresponding diffraction angles are quite small, the choice has been to design a DCM with a fixed distance between the two crystals. As a consequence, the output beam has a small vertical displacement during the scan. This movement is compensated by means of an upstream mask, vertically moving and cutting the input beam at different heights. The movement of the mask is driven by a mechanism linked to the primary rotation of crystals (self-compensation), without any additional motor and following the displacement law required for compensation. The principle, the mechanism and the general mechanical concept of the device will be described in this paper.

Planar waveguide-resonator: a new device for x-ray optics

2004 ◽  
Vol 33 (5) ◽  
pp. 360-371 ◽  
Author(s):  
V. K. Egorov ◽  
E. V. Egorov
Keyword(s):  
Planar Waveguide ◽  
Waveguide Resonator ◽  
Ray Optics ◽  
X Ray ◽  
New Device

Quantitative analysis with a two-detector measuring system in in-air PIXE-design to improve detection sensitivity at low energies

2013 ◽  
Vol 23 (01n02) ◽  
pp. 55-67 ◽  
Author(s):  
K. Sera ◽  
S. Goto ◽  
C. Takahashi ◽  
Y. Saitoh
Keyword(s):  
Quantitative Analysis ◽  
Production Cross ◽  
Detection Sensitivity ◽  
Measuring System ◽  
X Rays ◽  
Standard Material ◽  
X Ray ◽  
New Device ◽  
Low Energies ◽  
Improve Detection Sensitivity

In this paper, a two-detector measuring system in in-air PIXE system composed of two Si(Li) detectors has been developed for simultaneous measurement of low- and high-Z elements. In order to improve detection sensitivity of the detector for low energy region, a new device which is attached at the tip of the detector has been designed. It is made of acryl and has a thin end on which a 1.5 μm-thick Mylar film is stuck. As a result, it exhibited a miraculous effect in improving detection sensitivity at low energies and it became possible to detect K X-rays of aluminium. In order to perform quantitative analysis in in-air system, we have measured detection efficiencies for the two Si(Li) detectors including the effect of X-ray absorption in air on the basis of the method that we developed. Concerning the beam energy at the target and corresponding X-ray production cross-sections, the same values as were reported in the previous paper were applicable since conditions of irradiating system were unchanged. It was confirmed that the new method allows us to quantitatively analyze all the elements heavier than aluminum and to obtain mostly the same results as those by in-vacuum PIXE for various kinds of samples. Accuracy of analysis was also confirmed by using a standard material.

scholarly journals THE NEW DEVICE OF KASETTE USED FOR X-RAY PHOTOGRAPHING IN DENTAL SURGERY

1965 ◽  
Vol 20 (4) ◽  
pp. 291-293
Author(s):  
JITSUHO HANAMOTO ◽  
TAKEO KAJIYAMA
Keyword(s):  
Dental Surgery ◽  
X Ray ◽  
New Device

New Device for Obtaining X‐Ray Diffraction Patterns from Substances Exposed to High Pressure

1959 ◽  
Vol 30 (11) ◽  
pp. 1016-1019 ◽  
Author(s):  
John C. Jamieson ◽  
A. W. Lawson ◽  
N. D. Nachtrieb
Keyword(s):  
High Pressure ◽  
X Ray Diffraction ◽  
X Ray ◽  
New Device ◽  
Diffraction Patterns

Design and Development of a New General Purpose Stereotaxic Device

1993 ◽  
Vol 115 (1) ◽  
pp. 121-122
Author(s):  
R. Dejoz ◽  
J. Prat ◽  
J. Sa´nchez-Lacuesta ◽  
J. L. Peris ◽  
P. Vera ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Image Intensifier ◽  
General Purpose ◽  
Target Point ◽  
Radiation Doses ◽  
Design And Development ◽  
X Ray ◽  
Screw Insertion ◽  
New Device ◽  
Computer Calculations

This paper describes the design and development of a new device which allows the surgeon to locate an internal point following two X-ray views with an image intensifier. Three dimensional coordinates of the target point are directly estimated by means of two ring-and-bead sights and no computer calculations are necessary. After the location of the target point it is possible to choose any track to it by means of the rotation of an arc and the circumferential sliding of the arc. The system reduces radiation doses and it can be used for many purposes such as percutaneous discectomies and chemonucleolysis, biopsies and screw insertion of interlocking nails.

New five-circle κ diffractometer for reference-beam diffraction studies

2003 ◽  
Vol 36 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Daniel Pringle ◽  
Qun Shen
Keyword(s):  
Control Algorithm ◽  
Reference Beam ◽  
X Ray Diffraction ◽  
Experimental Procedure ◽  
X Ray ◽  
New Device ◽  
Phase Data ◽  
And Control ◽  
Beam Diffraction ◽  
Lysozyme Crystal

A compact five-circle κ-geometry diffractometer has been designed and implemented at CHESS for automated reference-beam X-ray diffraction (RBD) experiments. The details of the diffractometer design are presented, along with its geometry calculations, and its alignment and control algorithm. An outline of the overall RBD experimental procedure has been developed based on this κ diffractometer. Measured RBD interference profiles from a lysozyme crystal demonstrate that efficient triplet-phase data collection is possible using this new device in a modified crystallography oscillation setup.

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