نتایج جستجو برای: q factor measurement

تعداد نتایج: 1355681  

Journal: :Journal of Physics: Conference Series 2006

Journal: :journal of sciences islamic republic of iran 0

in this article, some diagnostic systems and the preliminary results of the ir-t1** (iran-tokamak 1) are presented. different diagnostic methods, including an array of soft x-ray detectors, visible spectrometer, electron cyclotron emission detector and electromagnetic measurement systems have been used and the hard disruptive instability occurring in the ir-t1 plasma during an ohmic heating dis...

Journal: :The Review of scientific instruments 2012
I Lee K Park J Lee

We report the characterization of a suspended microchannel resonator (SMR) for viscosity measurements in a low viscosity regime (<10 mPa s) using two measurement schemes. First, the quality factor (Q-factor) of the SMR was characterized with glycerol-water mixtures. The measured Q-factor at 20 °C exhibits a bilinear behavior with the sensitivity of 1281 (mPa s)(-1) for a lower (1-4 mPa s) and 3...

In this article, some diagnostic systems and the preliminary results of the IR-T1** (Iran-Tokamak 1) are presented. Different diagnostic methods, including an array of soft X-ray detectors, visible spectrometer, electron cyclotron emission detector and electromagnetic measurement systems have been used and the hard disruptive instability occurring in the IR-T1 plasma during an ohmic heating...

Journal: :CoRR 2007
Hervé Mathias Fabien Parrain Jean-Paul Gilles Souhil Megherbi Ming Zhang Philippe Coste Antoine Dupret

In this paper, an architecture designed for electrical measurement of the quality factor of MEMS resonators is proposed. An estimation of the measurement performance is made using PSPICE simulations taking into account the component's non-idealities. An error on the measured Q value of only several percent is achievable, at a small integration cost, for sufficiently high quality factor values (...

2008
Hervé Mathias Fabien Parrain Jean-Paul Gilles Souhil Megherbi Ming Zhang Philippe Coste Antoine Dupret

In this paper, an architecture designed for electrical measurement of the quality factor of MEMS resonators is proposed. An estimation of the measurement performance is made using PSPICE simulations taking into account the component's non-idealities. An error on the measured Q value of only several percent is achievable, at a small integration cost, for sufficiently high quality factor values (...

Journal: :IEEE Transactions on Instrumentation and Measurement 1982

2009
Vladimir DRUZHININ

We present measurements of the γγ * → π 0 transition form factor for the momentum transfer range Q 2 =4–40 GeV 2 and the γγ * → η c transition form factor for the range Q 2 =2–50 GeV 2. The results of the measurement of the η c mass, total and two-photon widths are also presented.

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