نتایج جستجو برای: electric resistance measurement

تعداد نتایج: 935074  

Journal: :Physical review letters 2009
U Warring M Amoretti C Canali A Fischer R Heyne J O Meier Ch Morhard A Kellerbauer

We have applied a combination of laser excitation and electric-field detachment to negative atomic ions for the first time, resulting in an enhancement of the excited-state detection efficiency for spectroscopy by at least 2 orders of magnitude. Applying the new method, a measurement of the bound-bound electric-dipole transition frequency in (192)Os- was performed using collinear spectroscopy w...

2017
Dai Taguchi Takaaki Manaka Mitsumasa Iwamoto Kateryna Bazaka Mohan V. Jacob

By using electric-field-induced optical second-harmonic generation (EFISHG) measurement, we analyzed hysteresis behavior of capacitance-voltage (C-V) characteristics of IZO/polyterpenol (PT)/C60/pentacene/Au diodes, where PT layer is actively working as a hole-transport electron-blocking layer. The EFISHG measurement verified the presence of interface accumulated charges in the diodes, and show...

Journal: :The Review of scientific instruments 2016
E Viezzer R Dux M G Dunne

A new edge beam emission polarimetry diagnostic dedicated to the measurement of the magnetic field line angle has been installed on the ASDEX Upgrade tokamak. The new diagnostic relies on the motional Stark effect and is based on the simultaneous measurement of the polarization direction of the linearly polarized π (parallel to the electric field) and σ (perpendicular to the electric field) lin...

2015
K. Kan J. Yang A. Ogata T. Kondoh M. Gohdo I. Nozawa T. Toigawa Y. Yoshida

A temporal electric field profile, which is a radially polarized terahertz (THz) pulse from an electron bunch, was measured by a large-aperture photoconductive antenna (PCA) with micro-structured concentric electrodes for the detection of THz pulses. Photo-induced charge carriers were generated by irradiation of femtosecond laser pulses on semiconductor plane of the electrodes on the PCA. Time-...

Journal: :Physical review letters 2009
R D Petrasso C K Li F H Seguin J R Rygg J A Frenje R Betti J P Knauer D D Meyerhofer P A Amendt D H Froula O L Landen P K Patel J S Ross R P J Town

Unique detection of electromagnetic fields and identification of field type and strength as a function of position were used to determine the nature of self-generated fields in a novel experiment with laser-generated plasma bubbles on two sides of a plastic foil. Field-induced deflections of monoenergetic 15-MeV probe protons passing through the two bubbles, measured quantitatively with proton ...

Journal: :فیزیک زمین و فضا 0
بهزاد زمانی قره چمنی عضو هیات علمی و مسول مرکز پایش پیش نشانگرهای زلزله حامد حمیدی هریس دانشجوی ارشد دانشگاه تبریز جمال بروستانی استادیار دانشگاه تبریز

iran is a country in the middle part of the alp-himalayan orogeny system that have huge earthquakes. the risk of the earthquakes is the cause of the researches about the precursors. because earthquakes occur suddenly, often with devastating consequences, earthquake prediction is a matter of great interest among the public and emergency service officials. a few observations suggest that some ear...

2014
Maciej A. Noras

Operation of traditional fieldmeters typically relies on mechanically actuated capacitance for DC fields measurement. This paper provides theoretical background for operation of an electric field sensor with a solid state variable capacitor. Design is supported by circuit and FEA models, illustrating the operation. Theoretical work is verified against results of sensor’s tests performed in DC, ...

Journal: :Technology audit and production reserves 2021

The use of high-precision measuring instruments for determining the torque electric motors in such areas as medicine, motor transport, shipping, aviation requires improvement metrological characteristics instruments. This, turn, an accurate assessment their error. Of particular importance is measurement power at high-speed installations, where some cases conventional systems are either unsuitab...

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