A semi-empirical formula allowing the extrapolation of the calibration curve towards higher energies. 2. Calibration by means of high energy gamma rays from (n,γ) or (p,γ) reactions produced in accelerators or nuclear reactors. These methods are time consuming, expensive and often inaccurate. ...
Still photography Equipment Cameras & Optics Contributed by Words Kate Jonker Images Kate Jonker When I first started taking photos underwater, I was immediately drawn to macro shots showing beautifully vibrant and detailed subjects with black backgrounds. I wanted to take photos like that! With ...
As is easily understood by using the Bragg formula ( ¼ 2d sin ), when the scattering angle 2 decreases, scat- tering reflects a large structure. SAXS, which is X-ray scattering at small angle (< 2, 3) region, provides in- formation on nanostructures in a size range of ...
Room temperature X-ray diffraction data collection forTthSHMT crystals was carried out on a Rigaku HighFlux HomeLab instrument equipped with a MicroMax-007 HF X-ray generator, Osmic VariMax optics, and a DECTRIS Eiger R 4 M detector at Oak Ridge National Laboratory. The data were indexed an...
1.Experimental verification of the formulae for ray tracing through diffractive optical elements;衍射光学器件光线追迹公式的实验验证 2.A new method of ray tracing in gradient index optics;一种变折射率光学系统光线追迹的新方法 3.A new method of ray tracing in GRIN optics;GRIN光学中光线追迹的一种...
Compound Alternative NamesChemical Compound NameChemical Formula***Source/Reference NV Neutral Verdigris Copper(II) Acetate Monohydrate (a) Cu (CH3COO)2. H2O (b) [Cu (CH3OO)2] . H2O Commercial Verdigris; ICDD PDF 27-1126 BV1 Basic Verdigris 1; Basic Verdigris D*; Basic Verdigris (132...
The site occupancy factor for the F and O atoms was also refined and was determined to be 0.956(3), resulting in a chemical formula of Cs2NaY(Pr)F(O)5.736□0.264, where □ represents anion vacancies. We stress that the existence of a trace amount of Gd3+ in the phosphor, owing to ...
The calculations from which FIGS. 9 to 12 were derived were carried out using wave optics based on the Kirchhoff formula for propagation of electromagnetic radiation. These involve fairly intensive numerical integration. Both absorption and phase effects are considered. As can be seen, the curves ar...
A preferred polymer of the novel x-ray intensifying screen further comprises from 0 to 95 mole percent of recurring units having the formula: ##STR6## wherein: Ar is arylene, preferably containing from about 6 to about 22 carbon atoms, such as phenylene, naphthalene, anthracene; perylene, ...
1. Experimental verification of the formulae for ray tracing through diffractive optical elements; 衍射光学器件光线追迹公式的实验验证2. A new method of ray tracing in gradient index optics; 一种变折射率光学系统光线追迹的新方法3. A new method of ray tracing in GRIN optics; GRIN光学中光线...