Wavelengths of photons

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Izzy Ick 4B
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Wavelengths of photons

Postby Izzy Ick 4B » Thu Oct 01, 2015 8:27 pm

What are the most common wavelengths of photons that are released when a sample bombarded with electrons?

Chem_Mod
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Re: Wavelengths of photons

Postby Chem_Mod » Thu Oct 01, 2015 8:51 pm

Please clarify your question. Are you asking about photoelectric effect or about atomic emission spectra?

Sarah Noorani 3L
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Re: Wavelengths of photons

Postby Sarah Noorani 3L » Fri Oct 02, 2015 4:09 pm

In the photoelectric effect, the photons released by the atom were not measured; the detector only detected the ejected electrons. The wavelengths of the electromagnetic radiation emitted by atoms to form the emission spectrum depends on the element because the atoms release different wavelengths of radiation for each element.

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Re: Wavelengths of photons

Postby Chem_Mod » Sat Oct 03, 2015 4:32 pm

In the photoelectric effect, the incoming photon is absorbed completely due to the many energy levels present in a macroscopic object (an object consisting of more than one atom). The effect describes the emission of an electron, not a photon. For the sake of simplicity, consider the photoelectric effect as a photon -> electron effect.

While in real life there are emissions of photons due to spin-orbit, nuclear coupling, Jahn-Teller effects, etc - these will not be discussed for the present.


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