نتایج جستجو برای: electrical resonance
تعداد نتایج: 387783 فیلتر نتایج به سال:
The absolute strengths of the Eα = 1175 keV resonance in the 6 Li(α, γ) 10 B reaction and of the Eα = 814 keV resonance in the 7 Li(α, γ) 11 B reaction have been measured to ωγ = 366 ± 38 meV and ωγ = 300 ± 32 meV, respectively, in good agreement with previous values. These resonances can be used to measure the absolute acceptance of the recoil separator ERNA to a precision of about 10%.
git u) = c(8ft(ii), ? = x dt, where c(£) is a piecewise continuous function and h(u) is a smooth positive function whose first derivative does not change signs. The external effect is assumed to be finite; for simplicity, we suppose also that c(£) has compact support. Our main interest is the behavior of nonlinear waves when the resonance occurs, that is, when the characteristic speed f(u) is c...
This paper deals with review of exploration of resonance in symmetric top molecules in different vibrational excited states, vt = n (n =1, 2, 3, 4). Calculations for CF3CCH shows that resonance take place at ( ) ( ) B A A 2A B A x k − − ζ ζ − − + = ll and ( ) ( ) B A A 2A B A x k − − ζ ζ − − + = ll for v10 = 2 and v10 = 3 respectively. In order to account for splitting about 3 MHz for the 2 ser...
For Enceladus the frequency of small-amplitude oscillations about the synchronous rotation state is approximately one-third the orbital frequency. Near this commensurability a period-three bifurcation occurs; on a surface of section a period-three chain of secondary islands appears near the synchronous island center. Forced libration in this resonance may be large and would imply large tidal he...
Comet 1P/Halley has the unique distinction of having a very comprehensive set of observational records for almost every perihelion passage from 240 B.C. This has helped to constrain theoretical models pertaining to its orbital evolution. Many previous works have shown the active role of mean motion resonances in the evolution of various meteoroid streams. Here we look at how various resonances,...
The impact of a sI=0, JP= 1 2 +dZ+s1540d resonance with a width of 5 MeV or more on the K+NsI=0d elastic cross section and on the P01 phase shift is examined within the KN meson-exchange model of the Jülich group. It is shown that the rather strong enhancement of the cross section caused by the presence of a Z+ with the above properties is not compatible with the existing empirical information ...
A model-independent method for the determination of resonance parameters as K-matrix pole parameters from a T matrix is presented. The method is based on eliminating the dependence on the choice of channel basis by analyzing the trace of the K and T matrices in the coupledchannel formalism, rather than individual matrix elements of the multichannel scattering matrix. © 2007 Elsevier B.V. PACS: ...
Exchange between positions with different resonance frequencies can be studied by two-dimensional spectroscopy originally developed for the NMR case. Cross intensity reflects changes of the resonance frequency due to different line shifts or anisotropic interactions. We now present analogous experiments carried out with pure NQR of polycrystalline samples. The specific requirements are discusse...
Comparison between the results of strain and temperature dependent center Bragg wavelength shift have been accomplished using different apodization profiles to produce linearly chirped apodized far off resonance fiber Bragg gratings for the design of an optimum Dispersion compensator. The chirping is made using the ultraviolet (UV) phase mask method.
The extensive research and development of micromechanical resonators is trying to allow the use of these devices for highly sensitive applications. Microcantilevers are some of the simplest MEMS structure and had been proved to be a good platform due to its excellent mechanical properties. A cantilever working in dynamic mode, adjust its resonance frequency depending on changes in both, the spr...
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