IT has long been known that the commercial X-ray tube emits practically no X-rays when run at a voltage of 10 kilo-volts or less. The reason for this is that the glass of which the tubes are made has a high absorptive power for the long wave length X-rays. If 10 kilovolts is tak...
1、X射线技术介绍和应用X-ray Analysis 1. X射线的产生和性质1.1 导论 1.2 X射线的产生1.3 X射线的性质2. X射线技术和应用2.1 X射线衍射(XRD)2.1 EXAFS,XANES2.3 X射线形貌(XRT)2.4 X射线成像(XRI)2.5 X射线小角散(XRS)2.6 X射线光刻(XRL)射线荧光(XRF) 3. 结束语:X射线实验系列化研究1. X射线的...
A formula of the X-ray wavelength based upon the calculation of atomic number is derived. Error analysis is carried out systematically for the calculated values of wavelength, and the rules of relative error are obtained. It is shown that the results of the calculation are very close to the ...
The corresponding wavelength amounts to 131±3 nm. Full size image We found that the resonant spin-precessional motion, that is, ferromagnetic resonance (FMR), of saturated nanodisks occurred at much larger frequency f0 compared with the uniform mode of the YIG film with wave vector kSW=0....
X-ray combined with short-wavelength infrared (SWIR) phosphors, that can make full advantage of the deeper tissue penetration of SWIR light, can be used as a fluorescent probe to realize biological imaging of deep tissues; they are, however, limited by their lower luminescence efficiency. Here,...
where δδ is the real parameter which depends on the X-ray wavelength, the film density and the composition of the material, and it is related to the critical angle according to the relation δ=Θ2c/2δ=Θc2/2. The imaginary parameter ββ is associated with the linear absorption coeffi...
The parameter 10,000 here is the specified parameter in the location coding formula. Specifically, it refers to the geometric series from 2𝜋2π to 10,000×2𝜋10,000×2π formed by wavelength in the process of trigonometric function operation, which is related to the series expansion. ...
where k=the dimensionless shape factor which is generally taken as 0.9, λ (1.54Ǻ) is the X-ray wavelength, β is the full width at the half maximum peak, and is the diffraction or Bragg's angle at the peak (200). View chapter ...
a quantum of radiation of wavelengthλ(=1/v¯)is radiated. This is theKα-line. The other lines are emitted as a result of energy changes illustrated inFig. 27.6, theL-series corresponding to the formulav¯=R(Z−7ċ4)2[(1/22)−(1/3)2]. It must be understood that characte...
To gain more understanding, let's build an XLOOKUP formula in its simplest form to perform an exact lookup. For this, we will only need the first 3 arguments. Supposing, you have a summary table with information about the five oceans on the Earth. You want to get the area of a specif...