scholarly journals Infrared Spectroscopy Beamline Based on a Tabletop Storage Ring

ISRN Optics ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-4
Author(s):  
Md. Monirul Haque ◽  
Ahsa Moon ◽  
Hironari Yamada
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Synchrotron Radiation ◽  
Ir Spectroscopy ◽  
Storage Ring ◽  
High Flux ◽  
Acceptance Angle ◽  
Bending Radius ◽  
Electron Orbit ◽  
Ir Emission

An optical beamline dedicated to the infrared (IR) spectroscopy has been constructed at MIRRORCLE, a tabletop storage ring. The beamline has been designed for the use of infrared synchrotron radiation (IRSR) emitted from a bending magnet of 156 mm bending radius with the acceptance angle of 355(H) × 138(V) mrad to obtain high flux. The IR emission is forced by an exactly circular optics, named photon storage ring (PhSR), placed around the electron orbit and is collected by a “magic mirror” associated with two plane mirrors in the storage ring. A Fourier transform interferometer has been installed to utilize the IRSR at MIRRORCLE. The design of the optical system and calculated results are reported.

scholarly journals Source Characteristics of 20 MeV Tabletop Synchrotron Radiation Source

2009 ◽  
Vol 2 (1) ◽  
pp. 9-16
Author(s):  
M. M. Haque ◽  
A. Moon ◽  
N. Miura
Keyword(s):  
Synchrotron Radiation ◽  
Light Source ◽  
Storage Ring ◽  
Far Infrared ◽  
Black Body ◽  
Far Infrared Spectroscopy ◽  
Source Characteristics ◽  
Electron Orbit ◽  
Ft Ir ◽  
Ir Emission

 The low energy storage ring MIRRORCLE-20, operating at electron energy Eel = 20 MeV can produce a powerful infrared (IR) synchrotron radiation with wavelengths over mid-IR and far-IR regions. To clarify the applicability of this light source, its far-IR output as well as spectrum was measured. The IR emission is forced by a circular optics, named photon storage ring (PhSR), placed around the electron orbit, and is collected by a magic mirror associated with two plane mirrors in the storage ring. It is proven that the FIR intensity is boosted by the PhSR. The SR spectrum of MIRRORCLE-20 in the far-IR region is much broader and more intense than that of a typical black body light source, and therefore can be used for far infrared spectroscopy (FIRS).  Keywords: Storage ring; FIR source; 20 MeV MIRRORCLE; FIRS; FT/IR.  © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i1.2637                J. Sci. Res. 2 (1), 9-16 (2010) 

scholarly journals Classification of Five Kinds of Moss Plants with the Use of Fourier Transform Infrared Spectroscopy and Chemometrics

2011 ◽  
Vol 25 (6) ◽  
pp. 271-285 ◽  
Author(s):  
Tao Hu ◽  
Wen-Ying Jin ◽  
Cun-Gui Cheng
Keyword(s):  
Cluster Analysis ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Ir Spectra ◽  
Fourier Transform Infrared Spectroscopy ◽  
Moss Species ◽  
Ft Ir ◽  
And Cluster Analysis ◽  
Ft Ir Spectroscopy

Fourier transform infrared spectroscopy (FT-IR) with Horizontal Attenuated Total Reflectance (HATR) techniques is used to obtain the FT-IR spectra of five kinds of mosses, such asPtychomitrium dentatum(Mitt.) Jaeg.,Ptychomitrium polyphylloides(C. Muell.) Par.,Ptychomitrium sinense(Mitt.) Jaeg.,Macromitrium syntrichophyllumTher. Etp. Vard., andMacromitrium ferrieiCard. Sz Ther. Based on the comparison of the above mosses in the FT-IR spectra, the region ranging from 4000 to 650 cm−1was selected as the characteristic spectra for analysis. Principal component analysis (PCA) and cluster analysis are considered to identify the five moss species. Because they belong to the homogeneous plants, and have similar chemical components and close FT-IR spectroscopy, PCA and cluster analysis can only give a rough result of classification among the five moss species, Fourier self-deconvolution (FSD) and discrete wavelet transform (DWT) methods are used to enhance the differences between them. We use these methods for further study. Results show that it is an excellent method to use FT-IR spectroscopy combined with FSD and DWT to classify the different species in the same family. FT-IR spectroscopy combined with chemometrics, such as FSD and DWT, can be used as an effective tool in systematic research of bryophytes.

Surface species during ALD of platinum observed with in situ reflection IR spectroscopy

2018 ◽  
Vol 20 (39) ◽  
pp. 25343-25356 ◽  
Author(s):  
Michiel Van Daele ◽  
Christophe Detavernier ◽  
Jolien Dendooven
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Atomic Layer Deposition ◽  
Fourier Transform Infrared Spectroscopy ◽  
Atomic Layer ◽  
Surface Species ◽  
Layer Deposition ◽  
Substrate Temperatures

Thermal atomic layer deposition (ALD) and plasma-enhanced ALD (PE-ALD) of Pt, using MeCpPtMe3 as the precursor and O2 gas or O2 plasma as the reactant, are studied with in situ reflection Fourier transform infrared spectroscopy (FTIR) at different substrate temperatures.

scholarly journals Selecting optimal features from Fourier transform infrared spectroscopy for discrete-frequency imaging

The Analyst ◽  
2018 ◽  
Vol 143 (5) ◽  
pp. 1147-1156 ◽  
Author(s):  
Rupali Mankar ◽  
Michael J. Walsh ◽  
Rohit Bhargava ◽  
Saurabh Prasad ◽  
David Mayerich
Keyword(s):  
Feature Selection ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Spectral Information ◽  
Computation Complexity ◽  
Histopathological Classification ◽  
Tissue Histology

Augmenting tissue histology with spectral information from mid-IR spectroscopy will benefit a lot. Optimal bands selection needed to do histopathological classification of mid-IR images will help to reduce imaging time and computation complexity. GPU use for feature selection makes it practical.

Infrared Spectroscopy of Deuterated a-Si, Ge:D, F Alloys Prepared by DC Glow Discharge Deposition

1986 ◽  
Vol 70 ◽  
Author(s):  
Y. Okada ◽  
D. Slobodin ◽  
S. F. Chou ◽  
R. Schwarz ◽  
S. Wagner
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Glow Discharge ◽  
Amorphous Silicon ◽  
Silicon Germanium ◽  
Dc Glow Discharge ◽  
Thermochemical Equilibrium ◽  
Amorphous Silicon Germanium ◽  
Glow Discharge Deposition

ABSTRACTDeuterated and fluorinated amorphous silicon-germanium alloys, a-Si, Ge:D, F, were studied by Fourier transform infrared (IR) spectroscopy. No Ge.-F modes are observed. The intensity of the Si-F and Si-F2 modes increases with Ge concentration. So does thae intensity of SiF4 which is trapped as isolated molecules. No DF (IR) or F2 (Raman) is observed. The IR spectra of alloys annealed at 300, 400, 500 and 600° C show that the fluorine in the Si-F and Si-F2 groups and in the SiF4 molecules is in thermochemical equilibrium.

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