Contributions to theV51Nuclear Magnetic Resonance Frequency Shift and Susceptibility in Vanadium Sesquioxide

1965 ◽  
Vol 137 (3A) ◽  
pp. A978-A982 ◽  
Author(s):  
E. D. Jones
Keyword(s):  
Magnetic Resonance ◽  
Resonance Frequency ◽  
Frequency Shift ◽  
Resonance Frequency Shift ◽  
Magnetic Resonance Frequency ◽  
Vanadium Sesquioxide

scholarly journals Спин-обменные столкновения в системе K-Li

2019 ◽  
Vol 127 (10) ◽  
pp. 639
Author(s):  
В.А. Картошкин
Keyword(s):  
Magnetic Resonance ◽  
Resonance Frequency ◽  
Frequency Shift ◽  
Cross Sections ◽  
Spin Exchange ◽  
Resonance Frequency Shift ◽  
Magnetic Resonance Frequency ◽  
Complex Spin ◽  
Exchange Cross Section ◽  
First Time

AbstractSpin-exchange cross sections and the magnetic-resonance frequency shift in collision of lithium and potassium atoms in the ground state have been calculated for the first time. The cross sections are calculated based on the data on the singlet ( $$X{}^{1}{{\Sigma }^{ + }}$$ ) and triplet ( $$a{}^{3}{{\Sigma }^{ + }}$$ ) interaction potentials of ^39K^7Li dimer. A passage from the energy dependences to the temperature ones of the real and imaginary parts of the complex spin-exchange cross section yields information about both the broadening of the magnetic resonance line of the atoms under study and the magnetic-resonance frequency shift in their collision.

Reliability and stability of thin-film amorphous silicon MEMS on glass substrates

2011 ◽  
Vol 1299 ◽  
Author(s):  
P. M. Sousa ◽  
V. Chu ◽  
J. P. Conde
Keyword(s):  
Thin Film ◽  
Resonance Frequency ◽  
Frequency Shift ◽  
Amorphous Silicon ◽  
Structural Damage ◽  
Chemical Vapor ◽  
Stability Study ◽  
Glass Substrates ◽  
Resonance Frequency Shift ◽  
Mems Resonators

ABSTRACTIn this work, we present a reliability and stability study of doped hydrogenated amorphous silicon (n+-a-Si:H) thin-film silicon MEMS resonators. The n+-a-Si:H structural material was deposited using radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) and processed using surface micromachining at a maximum deposition temperature of 110 ºC. n+-a-Si:H resonant bridges can withstand the industry standard of 1011 cycles at high load with no structural damage. Tests performed up to 3x1011 cycles showed a negligible level of degradation in Q during the entire cycling period which in addition shows the high stability of the resonator. In measurements both in vacuum and in air a resonance frequency shift which is proportional to the number of cycles is established. This shift is between 0.1 and 0.4%/1x1011 cycles depending on the applied VDC. When following the resonance frequency in vacuum during cyclic loading, desorption of air molecules from the resonator surface is responsible for an initial higher resonance frequency shift before the linear dependence is established.

scholarly journals Correcting heat-induced chemical shift distortions in proton resonance frequency-shift thermometry

2015 ◽  
Vol 76 (1) ◽  
pp. 172-182 ◽  
Author(s):  
Pooja Gaur ◽  
Ari Partanen ◽  
Beat Werner ◽  
Pejman Ghanouni ◽  
Rachelle Bitton ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Resonance Frequency ◽  
Frequency Shift ◽  
Proton Resonance Frequency ◽  
Proton Resonance ◽  
Proton Resonance Frequency Shift ◽  
Resonance Frequency Shift
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