Recent content by bahaar

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    Graduate Optical Properties: DFT, Pseudopotential, Plasma Frequency, Transmission

    Hi. Yes my means was peak. It is really embarrassing:blushing:. Thanks a lot for your reply:biggrin:.
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    Graduate Optical Properties: DFT, Pseudopotential, Plasma Frequency, Transmission

    Hi Perhaps i should clear more my question. Please guide me. I calculate the optical properties of SrS compound.I have two question: 1. In the loss function, there are several picks. I want determine plasma frequensy. Does only the highest pick show position of plasma freqeuncy and other...
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    Graduate Index Refraction: Transparent Bulk Matter?

    Thanks.:smile:
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    Graduate Optical Properties: DFT, Pseudopotential, Plasma Frequency, Transmission

    Hello 1- I calculate optical properties of a pure compound in framework of DFT with pseudopotential by software. I get several picks in loss function. Does only the highest , determine plasma frequency or all of them with different density of valence electrons? 2-can we conclude the...
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    Graduate Index Refraction: Transparent Bulk Matter?

    Hi. In the textsbook i raed for frequencies that (real part of index refraction) |n|~1>>|K| (exitinction coefficient), we have transparent matter (weak absorption). If we have a bulk matter with big diameter, that there are no transmitted light ( i don't know it is possible or not), our matter...
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    Graduate Does the Magnetic Field Affect the Dielectric Constant in the Lorentz Model?

    Thanks both of you.:smile:
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    Graduate Does the Magnetic Field Affect the Dielectric Constant in the Lorentz Model?

    Hi I read in text for calculation dielectric constant in Lorentz model, we only regard electric field that coupled with each oscillator. So the magnetic field of input wave has no effect in calculation of dielectric constant in this model?