نتایج جستجو برای: photon polarisation
تعداد نتایج: 74348 فیلتر نتایج به سال:
We present a scanning near-field optical microscope operating in reflection suitable for simultaneous bright field and fluorescence imaging. A non-coated pulled optical fibre is used in true reflection mode, i.e. both as emitter and collector. Beam splitters, dichroic mirrors and polarisers are combined to discriminate the different wavelength and polarisation signals. The distance between fibr...
The polarisation of prompt ψ(2S) mesons is measured by performing an angular analysis of ψ(2S) → μ + μ − decays using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb −1 , collected by the LHCb detector at a centre-of-mass energy of 7 TeV. The polarisation is measured in bins of transverse momentum p T and rapidity y in the kinematic region 3.5 < p T < 15 GeV/c ...
We compute the exclusive photoproduction of a $\gamma\,\pi^\pm$ pair using collinear factorisation framework, in kinematic regime where has large invariant mass. This channel presents new avenue for investigation GPDs. It is particularly interesting as high centre mass energies available at future experiments will allow study GPDs small skewness $ \xi $. scattering amplitude process, leading tw...
• Illumination increases the dissolution rate of oxide covered iron. The behaves as n-type semiconductor with direct band gap 1.9–2.1 eV. Electron–hole pair formation enhances by hole annihilation. Induced convection and thermal effects in also increase corrosion rate. Contributions from three light on photocorrosion iron are quantified. mechanism behind anodised under illumination has been stu...
We numerically compute light and polarisation curves of γ-ray burst afterglows for various configurations of the jet luminosity structure and for different dynamical evolutions. We especially consider the standard homogeneous “top hat” jet and the “universal structured jet” with power-law wings. We also investigate a possible more physical variation of the “top hat” model: the “Gaussian jet”. T...
Polarisation states are described by spin expectation values, known as Stokes parameters, the trajectories of which in a rotationally symmetric system form sphere named after Poincaré. Here, we show that broken rotational systems can exhibit distinct topological structures polarisation states. We use phase-shifter to circle <mml:m...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید