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Showing results for: noise

Non-Markovian stationary probability density for a harmonic oscillator in an electromagnetic field.

Research RF Safe Research Library Jan 1, 2012

This paper presents a theoretical calculation of the stationary probability density for a harmonic oscillator embedded in an electromagnetic field by solving the Fokker-Planck equation exactly. The magnetic field is treated as constant, while the electric field is modeled as an external stochastic force with…

Increased blood oxygen level-dependent (BOLD) sensitivity in the mouse somatosensory cortex during electrical forepaw stimulation using a cryogenic radiofrequency probe.

Research RF Safe Research Library Jan 1, 2011

This engineering-focused mouse fMRI study evaluated a 400-MHz cryogenic RF probe (CryoProbe) versus a conventional room-temperature surface coil during electrical forepaw stimulation. The CryoProbe increased image SNR and temporal SNR and reduced temporal noise compared with the room-temperature coil. The authors…

An extension of the Czjzek model for the distributions of electric field gradients in disordered solids and an application to NMR spectra of 71Ga in chalcogenide glasses.

Research RF Safe Research Library Jan 1, 2010

This paper discusses the Czjzek model for distributions of electric field gradient (EFG) tensors in disordered solids and highlights its underlying assumptions and characteristics. It then introduces an extended model that combines a defined local EFG environment with an adjustable Gaussian (Czjzek) noise term to…

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