scholarly journals Experimental investigation of the trapping and energy loss mechanisms of intense relativistic electron rings in hydrogen gas and plasma

1977 ◽  
Author(s):  
A.C. Jr. Smith
Keyword(s):  
Experimental Investigation ◽  
Energy Loss ◽  
Relativistic Electron ◽  
Hydrogen Gas ◽  
Loss Mechanisms

Numerical models and experimental investigation of energy loss mechanisms in SOI-based tuning-fork gyroscopes

2009 ◽  
Vol 152 (1) ◽  
pp. 63-74 ◽  
Author(s):  
Yang Xu ◽  
Ren Wang ◽  
Shiva Krishna Durgam ◽  
Zhili Hao ◽  
Linda Vahala
Keyword(s):  
Experimental Investigation ◽  
Energy Loss ◽  
Tuning Fork ◽  
Numerical Models ◽  
Loss Mechanisms

A Numerical and Experimental Investigation of Energy Loss Mechanisms in Tuning-Fork Gyroscopes

2008 ◽  
Author(s):  
Yang Xu ◽  
Shiva Krishna Durgam ◽  
Zhili Hao ◽  
Frances Williams
Keyword(s):  
Experimental Investigation ◽  
Energy Loss ◽  
Tuning Fork ◽  
Numerical Models ◽  
Critical Factor ◽  
Thermoelastic Damping ◽  
Quality Factors ◽  
Transfer Method ◽  
Anchor Loss ◽  
Loss Mechanisms

This paper presents a comprehensive investigation of energy loss mechanisms in tuning-fork gyroscopes from both numerical and experimental perspectives. Two main energy loss mechanisms, anchor loss and thermoelastic damping (TED), are investigated through numerical models and later experimental investigation. In order to predict the qualify factor of tuning-fork gyroscopes, a separation-and-transfer method is employed to predict anchor loss and a thermal energy method is utilized to calculate thermoelastic damping. The experimental investigation is conducted to verify the developed models. It is found that HF release in fabricating these devices is a critical factor to the measured quality factor of tuning-fork gyroscopes. The calculated Quality factors are compared with the measured data, showing good agreement.

Analytical analysis and experimental investigation of energy loss mechanisms in rocking mass microgyroscope

2015 ◽  
Vol 23 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Xiong Wang ◽  
Xiaobin Xu ◽  
Tao Zhu ◽  
Xuezhong Wu ◽  
Mengchun Pan
Keyword(s):  
Experimental Investigation ◽  
Energy Loss ◽  
Analytical Analysis ◽  
Loss Mechanisms

Investigation of Energy Loss Mechanisms in Surface-Micromachined Resonators

2009 ◽  
Author(s):  
Shiva Krishna Durgam ◽  
Yang Xu ◽  
Zhili Hao ◽  
Sunder Sarangan ◽  
Tim Dallas
Keyword(s):  
Experimental Investigation ◽  
Energy Loss ◽  
Numerical Models ◽  
Thermoelastic Damping ◽  
Q Value ◽  
Transfer Method ◽  
Q Factors ◽  
Anchor Loss ◽  
Good Agreement ◽  
Loss Mechanisms

This paper presents an analytical and experimental investigation of energy loss mechanisms in surface-micromachined resonators. The numerical models of anchor loss and thermoelastic damping are created in ANSYS/Multiphysics, according to a separation-and-transfer method and a thermal-energy method, respectively. Surface-micromachined resonators are fabricated using the SUMMiT V MEMS foundry process and the measured Quality (Q) factors from these resonators are compared with the created numerical models, showing good agreement. The measured highest Q value is 35,088 at a resonant frequency of 1 l MHz. Thermoelastic damping is found to be the dominant loss in these surface-micromachined resonators.

Study of Energy Loss Mechanisms in AlN-Based Piezoelectric Length Extensional-Mode Resonators

2019 ◽  
Vol 28 (4) ◽  
pp. 619-627 ◽  
Author(s):  
Afzaal Qamar ◽  
Stewart Sherrit ◽  
Xu-Qian Zheng ◽  
Jaesung Lee ◽  
Philip X.-L. Feng ◽  
...  
Keyword(s):  
Energy Loss ◽  
Loss Mechanisms

scholarly journals Energy Loss of Radio Pulsars

2000 ◽  
Vol 177 ◽  
pp. 371-374
Author(s):  
V.S. Beskin ◽  
R.R. Rafikov
Keyword(s):  
Boundary Layer ◽  
Energy Loss ◽  
Electric Current ◽  
Relativistic Electron ◽  
Electromagnetic Energy ◽  
Radio Pulsars ◽  
Electron Positron ◽  
Light Surface ◽  
Almost All ◽  
Two Fluid

AbstractTwo-fluid effects on the radial 2D outflow of relativistic electron–positron plasma are considered. It is shown that when the longitudinal electric current is smaller than the Goldreich–Julian one, almost all electromagnetic energy is transformed into the energy of particles in the narrow boundary layer near the light surface |E| = |B|.

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