CaF2 has a significant effect on the viscosity of CaO-SiO2 slags, which is closely related to change melts structure. In this study, molecular dynamics simulation been used study influence different adding methods short-range and medium-range melt structure CaO-SiO2-CaF2 at 1823 K. The results show that directly slags ((50-x/2)CaO-(50-x/2)SiO2-xCaF2, x = 5 ~ 20 mol%), distribution oxygen types ...

We established a new diode array pumped Er:Yb:Glass test setup for evaluation of the laser performance and q-switch characteristics of various saturable absorber materials at 1.54um. Pumping distribution and maximum gain was analyzed. Passive q-switched laser operation was demonstrated with both U: CaF2 and Co : MgAl2O4. TEMoo Qswitch pulses with energy of 0.5mJ and pulse width of 10ns was obta...

DAMA is searching for rare processes by developing and using several kinds of radiopure scintillators: in particular, NaI(Tl), liquid Xenon and CaF2(Eu). Here only the results released so far on the WIMP annual modulation signature are summarized and compared with results from other experiments, including the recent re-analysis of CDMS-I data. Next perspectives are also shortly addressed.

It has to be noticed that diffusion or chemical reaction of adjoining layers often occur in multilayers and their characteristics are affected. Therefore the investigation of the multilayer structure in depth direction is important. Such investigation is usually made by TEM (transmission electron microscope) observing cross sections. However this method is destructive against the samples. X-ray...

The fluorolytic sol–gel synthesis is applied with the intention to obtain two different types of core–shell nanoparticles, namely, SrF2–CaF2 and CaF2–SrF2. In separate fluorination steps for core shell formation, corresponding metal lactates are reacted anhydrous HF in ethylene glycol. Scanning transmission electron microscopy (STEM) dynamic light scattering (DLS) confirm formation particles me...

We report the structural and optical properties of molecular beam epitaxy (MBE) grown 2-dimensional (2D) material molybdenum diselenide (MoSe2) on graphite, CaF2 and epitaxial graphene. Extensive characterizations reveal that 2HMoSe2 grows by van-der-Waals epitaxy on all 3 substrates with a preferred crystallographic orientation and a Mo:Se ratio of 1:2.