A simple experimental setup for the simultaneous measurement of ESR and absorption spectra

1994 ◽  
Vol 65 (6) ◽  
pp. 2145-2146 ◽  
Author(s):  
Georg Gescheidt
Keyword(s):  
Absorption Spectra ◽  
Simultaneous Measurement ◽  
Experimental Setup

scholarly journals Compact Laser Collimation System for Simultaneous Measurement of Five-Degree-of-Freedom Motion Errors

2020 ◽  
Vol 10 (15) ◽  
pp. 5057
Author(s):  
Chuang Sun ◽  
Sheng Cai ◽  
Yusheng Liu ◽  
Yanfeng Qiao
Keyword(s):  
Simultaneous Measurement ◽  
Measurement Accuracy ◽  
Measurement Data ◽  
Optical Path ◽  
Degree Of Freedom ◽  
Experimental Setup ◽  
Collimation System ◽  
Optical Configuration ◽  
Series Of Experiments ◽  
The Common

A compact laser collimation system is presented for the simultaneous measurement of five-degree-of-freedom motion errors. The optical configuration of the proposed system is designed, and the principle of the measurement of five-degree-of-freedom errors is described in detail. The resolution of the roll and the horizontal straightness is doubled compared with other laser collimation methods. A common optical path compensation method is provided to detect light drift in real time and compensate for straightness and angle errors. An experimental setup is constructed, and a series of experiments are performed to verify the feasibility and stability of the system. Compared with commercial instruments, the pitch and yaw residuals are ± 2.5 ″ and ± 3.5 ″ without correction, and the residuals are ± 1.9 ″ and ± 2.8 ″ after correction, respectively. The comparison deviations of the horizontal straightness and vertical straightness changed from ± 4.8   μ m to ± 2.8 μm and ± 5.9 μm to ± 3.6 μm, respectively. The comparison deviation of the roll is ± 4.3 ″ . The experimental results show that the data of the five-degree-of-freedom measurement system obtained are largely the same as the measurement data of commercial instruments. The common optical path compensation can effectively improve the measurement accuracy of the system.

scholarly journals Particle contamination monitoring in the backscattering light experiment for LISA

2019 ◽  
Vol 5 (1) ◽  
pp. 12-18
Author(s):  
Sibilla Di Pace ◽  
Arwa Dabbech ◽  
Vitalii Khodnevych ◽  
Michel Lintz ◽  
Nicoleta Dinu-Jaeger
Keyword(s):  
Simultaneous Measurement ◽  
Particle Deposition ◽  
Laser Interferometer ◽  
Critical Issue ◽  
Dust Particles ◽  
Experimental Setup ◽  
Space Antenna ◽  
Optical Surfaces ◽  
Laser Interferometer Space Antenna ◽  
Particle Contamination

Abstract In the context of space-based optics, contamination due to particle deposition on the optics is inevitable and constitutes a critical issue. This gets more challenging for the sensitive heterodyne measurements of the Laser Interferometer Space Antenna (LISA), the space-based gravitational wave observatory to be launched in 2034. Therefore, table-top experiments need to be developed for a better understanding of how micrometer to millimeter sized dust particles, present on optical surfaces, affect LISA measurements. In this work, we present an experimental setup for the simultaneous measurement of the coherent backscattering and the monitoring of particles deposition on the optics to be tested. The results of the first measurements are presented and discussed in this article.

scholarly journals Development of Simultaneous Measurement System for X-ray Absorption Spectra at Two Absorption Edges

2020 ◽  
Vol 36 (1) ◽  
pp. 47-53
Author(s):  
Misaki KATAYAMA ◽  
Hirona YAMAGISHI ◽  
Yusaku YAMAMOTO ◽  
Yasuhiro INADA
Keyword(s):  
Absorption Spectra ◽  
Measurement System ◽  
Simultaneous Measurement ◽  
X Ray ◽  
X Ray Absorption ◽  
Absorption Edges

Simultaneous measurement of optical rotation dispersion and absorption spectra for chiral substances

Chirality ◽  
2020 ◽  
Vol 32 (8) ◽  
pp. 1072-1079
Author(s):  
Xing Liu ◽  
Jinlong Yang ◽  
Zhihao Geng ◽  
Hongzhi Jia
Keyword(s):  
Absorption Spectra ◽  
Simultaneous Measurement ◽  
Optical Rotation ◽  
Rotation Dispersion

Simultaneous Measurement of X-ray Absorption Spectra and Kinetics: A Fixed-bed, Plug-flow Operando Reactor

2009 ◽  
Vol 131 (1-2) ◽  
pp. 1-6 ◽  
Author(s):  
Bradley R. Fingland ◽  
Fabio H. Ribeiro ◽  
Jeffrey T. Miller
Keyword(s):  
Absorption Spectra ◽  
Simultaneous Measurement ◽  
Plug Flow ◽  
Fixed Bed ◽  
X Ray ◽  
X Ray Absorption

Ultraviolet Absorption of Refractory Elements by a Dual Laser Plasma Method

1988 ◽  
Vol 102 ◽  
pp. 243-246
Author(s):  
J.T. Costello ◽  
W.G. Lynam ◽  
P.K. Carroll
Keyword(s):  
Absorption Spectra ◽  
Laser Plasma ◽  
Optical Pulse ◽  
Ionic Species ◽  
Neutral Species ◽  
Plasma Method ◽  
Plasma Technique ◽  
Refractory Elements ◽  
Delay Times ◽  
Dual Laser

AbstractThe dual laser-produced plasma technique for the study of ionic absorption spectra has been developed by the use of two Q-switched ruby lasers to enable independent generation of the absorbing and back-lighting plasmas. Optical pulse handling is used in the coupling cicuits to enable reproducible pulse delays from 250 nsec. to 10 msec, to be achieved. At delay times > 700 nsec. spectra of essentially pure neutral species are observed. The technique is valuable, not only for obtaining the neutral spectra of highly refractory and/or corrosive materials but also for studying behaviour of ionic species as a function of time. Typical spectra are shown in Fig. 1.

XUV Absorption Spectra of Carbon Ions

1988 ◽  
Vol 102 ◽  
pp. 71-73
Author(s):  
E. Jannitti ◽  
P. Nicolosi ◽  
G. Tondello
Keyword(s):  
Absorption Spectra ◽  
Cross Section ◽  
Theoretical Calculations ◽  
Photoionization Cross Section ◽  
Carbon Ions

AbstractThe photoabsorption spectra of the carbon ions have been obtained by using two laser-produced plasmas. The photoionization cross-section of the CV has been absolutely measured and the value at threshold, σ=(4.7±0.5) × 10−19cm2, as well as its behaviour at higher energies agrees quite well with the theoretical calculations.

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