The frequency dependent dielectric properties of Ni1−xCdxCrxFe2−xO4 (x = 0.0, 0.3, 0.5, 0.7 and 1.0) spinel ferrite system are studied by measuring dielectric constant (ε′), dielectric loss (D) and conductivity (σa.c) at 300 K in the frequency range 100 Hz-2 MHz. The highest value of σa.c and ε′ is observed for x = 0.3 composition. The values ε′ and σa.c decrease with increase in frequency for ...

The interest of the method of X-ray diffraction for residual stress measurement is in continuous progress due to the advances in theoretical research and the development of new equipment. Usually, the shift and broadening of a diffraction peak reveal respectively the macrostrain (or stress) and rnicrostrain. The limits of the X-ray provided by classical tubes in laboratory are its low intensity...

We show that the spectral broadening of the pump pulse through self-phase modulation in a time-domain distributed Brillouin sensor has a considerably detrimental effect in the measurement, especially in the case of long distances and high-resolution pulses. Using 30 ns pump pulses with peak power of 276 mW, self-phase modulation leads to a doubling of the effective gain linewidth after some 20 ...

We develop a theoretical formalism to model the linear spectrum of a quantum dot embedded in a highquality cavity, in the presence of an arbitrary mechanism modifying the homogeneous spectrum of the quantum dot. Within the simple assumption of Lorentzian broadening, we show how the known predictions of cavity quantum electrodynamics are recovered. We then apply our model to the case where the q...

In this article, effects of the strong long-range interaction Rydberg atoms on Autler–Townes splitting spectrum are investigated. Preliminary results obtained for various excitation times and atom densities. The 2S1/2 2P1/2 levels lithium-7 coupled with laser field probed by another via into a 70S level. Interactions between excited probe beam lead to broadening spectra. At high concentrations ...

A further comparison of the Health and Safety Executive (HSE) standard quartz, A9950 (Sikron F600), and the National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 1878, standard respirable alpha-quartz, has been carried out for the four principal diffraction peaks. In the earlier comparison by Jeyaratnam and Nagar (1993, Ann Occup Hyg; 37: 167-79), the standards...

1. The morphological (n = 66) and electrophysiological (n = 41) properties of eighty-six thalamocortical (TC) neurones and those of one interneurone in the cat ventrobasal (VB) thalamus were examined using an in vitro slice preparation. The resting membrane potential for thirty-seven TC neurones was -61.9 +/- 0.7 mV, with thirteen neurones exhibiting delta oscillation with and without DC inject...

Background: The advantages of proton beam in radiation therapy- like small lateral scattering as well as absence of exit dose tail in the organs which are after the tumor- make it capable of delivering more treatment doses to the target and much lesser to the critical tissues near it. Materials and Methods: In this study, the Monte Carlo MCNPX code has been used to simulate a slab head phantom ...

In this study, severe plastic deformation through high-pressure sliding (HPS) was applied for in situ high-energy X-ray diffraction analysis at SPring-8 JASRI (Japan Synchrotron Radiation Research Institute). Allotropic transformation of pure Ti examined terms temperatures, pressures and imposed strain using a miniaturized HPS facility. The true pressure on the sample estimated from peak shift....

Broadening is a classic jet observable that probes the transverse momentum structure of jets. Traditionally, broadening has been measured with respect to the thrust axis, which is aligned along the (hemisphere) jet momentum to minimize the vector sum of transverse momentum within a jet. In this paper, we advocate measuring broadening with respect to the “broadening axis”, which is the direction...