Results 31 to 40 of about 118,470 (294)

Precision Angle Measurement Systems on the Basis of Ring Laser Gyro

open access: yesSensors, 2020
The main application of a ring laser gyroscope is navigation. It is currently the most widely used device for strapdown inertial navigation systems. However, it is also applicable for high-precision angle metrology systems.
Yuri V. Filatov   +3 more
doaj   +1 more source

A superposed epoch analysis of auroral evolution during substorm growth, onset and recovery: open magnetic flux control of substorm intensity [PDF]

open access: yesAnnales Geophysicae, 2009
We perform two superposed epoch analyses of the auroral evolution during substorms using the FUV instrument on the Imager for Magnetopause-to-Aurora Global Explorer (IMAGE) spacecraft. The larger of the two studies includes nearly 2000 substorms.
S. E. Milan   +8 more
doaj   +1 more source

A Review of Mechanical Fine-Pointing Actuators for Free-Space Optical Communication

open access: yesAerospace, 2023
This paper presents a state-of-the-art overview of fine beam steering mechanisms for free-space optical communication on satellites. Precise beam pointing is a critical task for the successful operation of free-space optical communication systems.
Martynas Milaševičius   +1 more
doaj   +1 more source

External Field Response and Applications of Metal Coated Hemispherical Janus Particles

open access: yesApplied Sciences, 2018
Hemispherical Janus particles that were coated with silver or nickel on the equatorial plane of hemispherical polymer microparticles were prepared and dispersed in water and the responses to AC electric and stationary magnetic fields applied were ...
So Aizawa, Keisuke Seto, Eiji Tokunaga
doaj   +1 more source

The COMIX polarimeter: a compact device for XUV polarization analysis

open access: yesJournal of Synchrotron Radiation, 2022
We report on the characterization of a novel extreme-ultraviolet polarimeter based on conical mirrors to simultaneously detect all the components of the electric field vector for extreme-ultraviolet radiation in the 45–90 eV energy range.
Matteo Pancaldi   +13 more
doaj   +1 more source

Plasma cleaning of ITER first mirrors in magnetic field

open access: yes, 2014
To avoid reflectivity losses in ITER optical diagnostic systems, plasma sputtering of metallic First Mirrors is foreseen in order to remove deposits coming from the main wall (mainly beryllium and tungsten). Therefore plasma cleaning has to work on large
Leipold, Frank   +5 more
core   +1 more source

The PVLAS experiment: measuring vacuum magnetic birefringence and dichroism with a birefringent Fabry-Perot cavity [PDF]

open access: yes, 2015
Vacuum magnetic birefringence was predicted long time ago and is still lacking a direct experimental confirmation. Several experimental efforts are striving to reach this goal, and the sequence of results promises a success in the next few years.
Della Valle, F.   +7 more
core   +4 more sources

Simulation and experimental investigation on the wavefront correction performance of a dual magnetic connection deformable mirror under high-power laser irradiation

open access: yesFrontiers in Physics, 2023
Deformable mirrors (DMs) are widely used in high-power laser systems to improve the output beam quality. However, under high-power laser irradiation, the heat accumulates on the DM mirror surface and results in high-power laser induced distortions (LID),
Yamin Zheng   +11 more
doaj   +1 more source

Reply to the Comment on "The Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors"

open access: yes, 2016
We reply to the "Comment on 'The Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors'" [arXiv:1604.06432]. We believe the comment misrepresents our papers, and fails to provide a plausible resolution to the conflict ...
Guérout, R   +3 more
core   +3 more sources

An atom mirror etched from a hard drive [PDF]

open access: yes, 2003
We describe the fabrication of an atom mirror by etching of a common hard drive, and we report the observation of specular retroreflection of 11 uk cesium atoms using this mirror.
Lassailly, Yves   +4 more
core   +2 more sources

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