2014 The self-quenching of the Nd3+ infrared fluorescence in LaF3 has been studied by the direct measurement of the transfer rates for various classes of Nd3+ pairs. Using weakly doped samples, the pairs are isolated and their behaviour is intrinsic. The results obtained at 1.2 K are used to predict the properties of concentrated crystals. From the difference between the predicted behaviour and...

A novel fluorometric method has been developed for rapid determination of DNA and RNA with calcein-neodymium complex as a fluorescence probe. The method is based on the fluorescence enhancement of calcein-Nd(III) complex in the presence of DNA or RNA, with maximum excitation and emission wavelength at 489 nm and 514 nm, respectively. Under optimal conditions, the calibration graphs are linear o...

Surface-functionalized nanodiamond (ND) is a promising material for nanomedicine and nanotechnology applications. Among the surface functionalizations developed ND, thiol-termination has received relatively little attention. Here we describe new method of thiolating detonation high-pressure high-temperature ND by treatment with elemental sulfur at 450 °C, followed reduction surface-bound moieti...

We study the scattering of two Skyrmions at low energy and large separation. We use the method proposed by Manton for truncating the degrees of freedom of the system from in nite to a manageable nite number. This corresponds to identifying the manifold consisting of the union of the low energy critical points of the potential along with the gradient ow curves joining these together and by posit...

To improve the stability and reproducibility of laser wakefield accelerators and to allow for future applications, controlling the injection of electrons is of great importance. This allows us to control the amount of charge in the beams of accelerated electrons and final energy of the electrons. Results are presented from a recent experiment on controlled injection using the scheme of collidin...

The Karasjok–Central Lapland Greenstone Belt is one of the largest Palaeoproterozoic greenstone belts in Fennoscandian Shield and includes multiple (ultra)mafic intrusions, some with notable ore reserves, formed during three episodes at 2.44, 2.22 2.05 Ga. This study presents new mineralogical, geochronological isotopic data for Gállojávri ultramafic intrusion, Karasjok Belt, northern Norway. P...