Synchrotron-based spectroscopy of X-ray channeling through hollow capillary microchannels inside glass plates

2011 ◽  
Vol 19 (1) ◽  
pp. 129-131 ◽  
Author(s):  
M. I. Mazuritskiy
Keyword(s):  
Synchrotron Radiation ◽  
Electronic States ◽  
Capillary Surface ◽  
Glass Capillary ◽  
Hollow Glass ◽  
X Ray ◽  
Microchannel Plates ◽  
Fluorescence Radiation ◽  
Fine Structures ◽  
Channeling Radiation

Here, soft X-ray synchrotron radiation transmitted through microchannel plates is studied experimentally. Fine structures of reflection and XANES SiL-edge spectra detected on the exit of silicon glass microcapillary structures under conditions of total X-ray reflection are presented and analyzed. The phenomenon of the interaction of channeling radiation with unoccupied electronic states and propagation of X-ray fluorescence excited in the microchannels is revealed. Investigations of the interaction of monochromatic radiation with the inner-shell capillary surface and propagation of fluorescence radiation through hollow glass capillary waveguides contribute to the development of novel X-ray focusing devices in the future.

A soft-x-ray core absorption study on the electronic states in Ag- and Cu-photodissolved amorphous using synchrotron radiation

1996 ◽  
Vol 8 (10) ◽  
pp. 1607-1614 ◽  
Author(s):  
S Hosokawa ◽  
T Kouchi ◽  
I Ono ◽  
M Taniguchi ◽  
Y Takata ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Electronic States ◽  
Absorption Study ◽  
X Ray

scholarly journals Controlling X-ray beam trajectory with a flexible hollow glass fibre

2013 ◽  
Vol 21 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Yoshihito Tanaka ◽  
Takashi Nakatani ◽  
Rena Onitsuka ◽  
Kei Sawada ◽  
Isao Takahashi
Keyword(s):  
Synchrotron Radiation ◽  
Glass Fibre ◽  
Metal Film ◽  
Transmission Efficiency ◽  
Total Reflection ◽  
Synchrotron Radiation Beam ◽  
Radiation Beam ◽  
Hollow Glass ◽  
X Ray ◽  
Glancing Angle

A metre-length flexible hollow glass fibre with 20 µm-bore and 1.5 mm-cladding diameters for transporting a synchrotron X-ray beam and controlling the trajectory has been examined. The large cladding diameter maintains a moderate curvature to satisfy the shallow glancing angle of total reflection. The observed transmission efficiency was more than 20% at 12.4 keV. As a demonstration, a wide-area scan of a synchrotron radiation beam was performed to identify the elements for a fixed metal film through its absorption spectra.

Excitation and propagation of X-ray fluorescence through thin devices with hollowed ordered structures: comparison of experimental and theoretical spectra

2016 ◽  
Vol 23 (1) ◽  
pp. 274-280 ◽  
Author(s):  
M. I. Mazuritskiy ◽  
S. B. Dabagov ◽  
A. Marcelli ◽  
A. M. Lerer ◽  
K. Dziedzic-Kocurek
Keyword(s):  
Wave Propagation ◽  
Fluorescence Spectra ◽  
Angular Distributions ◽  
X Rays ◽  
Ordered Structures ◽  
X Ray ◽  
Microchannel Plates ◽  
X Ray Imaging ◽  
Fluorescence Radiation ◽  
Grazing Angles

The lack of models describing the propagation of X-rays in waveguides and the interference mechanism between incident and reflected radiation waves hamper the understanding and the control of wave propagation phenomena occurring in many real systems. Here, experimental spectra collected at the exit of microchannel plates (MCPs) under the total X-ray reflection condition are presented. The results are discussed in the framework of a theoretical model in which the wave propagation is enhanced by the presence of a transition layer at the surface. The angular distributions of the propagating radiation at the exit of these MCPs with microchannels of ∼3 µm diameter will also be presented and discussed. These spectra show contributions associated with the reflection of the primary monochromatic beam and with the fluorescence radiation originating from the excitation of atoms composing the surface of the microchannel. The soft X-ray fluorescence spectra collected at the exit of microcapillaries were analyzed in the framework of a wave approximation while diffraction contributions observed at the exit of these hollow X-ray waveguides have been calculated using the Fraunhofer diffraction model for waves in the far-field domain. Data collected at the SiL-edge show that in glassy MCPs the fluorescence radiation can be detected only when the energy of the primary monochromatic radiation is above the absorption edge for grazing angles higher than half of the critical angle of the total reflection phenomenon. Experimental data and simulations of the propagating radiation represent a clear experimental confirmation of the channeling phenomenon of the excited fluorescence radiation inside a medium and point out that a high transmission can be obtained in waveguide optics for parameters relevant to X-ray imaging.

X‐ray detection characteristics of microchannel plates using synchrotron radiation in the energy range from 0.06 to 0.6 keV

1990 ◽  
Vol 61 (10) ◽  
pp. 2566-2570 ◽  
Author(s):  
M. Hirata ◽  
N. Yamaguchi ◽  
T. Cho ◽  
E. Takahashi ◽  
T. Kondoh ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Energy Range ◽  
X Ray ◽  
Microchannel Plates ◽  
Detection Characteristics

Current response characteristics of microchannel plates x‐ray detector using synchrotron radiation (0.6–2 keV and 5–20 keV)

1988 ◽  
Vol 59 (2) ◽  
pp. 252-255 ◽  
Author(s):  
T. Kondoh ◽  
N. Yamaguchi ◽  
T. Cho ◽  
M. Hirata ◽  
S. Miyoshi ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Current Response ◽  
X Ray ◽  
Response Characteristics ◽  
Microchannel Plates

scholarly journals LiquidJet PES: Soft X-ray Photoelectron Spectroscopy from Aqueous Solution end-station at BESSY II

2017 ◽  
Vol 3 ◽  
Author(s):  
Bernd Winter
Keyword(s):  
Aqueous Solution ◽  
Electronic Structure ◽  
Synchrotron Radiation ◽  
Aqueous Solutions ◽  
Liquid Water ◽  
Photoelectron Spectroscopy ◽  
Vacuum Chamber ◽  
Glass Capillary ◽  
X Ray ◽  
Liquid Microjets

The LiquidJet PES apparatus is a specialized end-station at the synchrotron radiation facility BESSY II, Berlin, for studying the electronic structure of liquid water, aqueous and non-aqueous solutions with soft X-ray photoelectron spectroscopy. Targets are liquid microjets that are introduced into a vacuum chamber via a ~20 µm glass capillary.

Evaluation of Freezing Methods by Low Temperature X-Ray Diffraction

1977 ◽  
Vol 35 ◽  
pp. 330-333
Author(s):  
T. Gulik-Krzywicki ◽  
M.J. Costello
Keyword(s):  
Biological Materials ◽  
Molecular Organization ◽  
X Ray Diffraction ◽  
Glass Capillary ◽  
X Ray ◽  
Rate Dependent ◽  
Before And After ◽  
Freeze Etching ◽  
Diffraction Patterns ◽  
Set Up

Freeze-etching electron microscopy is currently one of the best methods for studying molecular organization of biological materials. Its application, however, is still limited by our imprecise knowledge about the perturbations of the original organization which may occur during quenching and fracturing of the samples and during the replication of fractured surfaces. Although it is well known that the preservation of the molecular organization of biological materials is critically dependent on the rate of freezing of the samples, little information is presently available concerning the nature and the extent of freezing-rate dependent perturbations of the original organizations. In order to obtain this information, we have developed a method based on the comparison of x-ray diffraction patterns of samples before and after freezing, prior to fracturing and replication.Our experimental set-up is shown in Fig. 1. The sample to be quenched is placed on its holder which is then mounted on a small metal holder (O) fixed on a glass capillary (p), whose position is controlled by a micromanipulator.

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