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Results tagged with atomic-physics
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user 4272
Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. This includes ions as well as neutral atoms and, unless otherwise stated, for the purposes of this discussion it should be assumed that the term atom includes ions.
2
votes
Accepted
Reason for exponentially(?) decreasing atomic radius
The cycles of rise/fall you see are a reason the periodic table is called ... periodic.
At the core of atoms is a nucleus, which attracts (because it has
a positive charge) negative charges, electron …
- 10.2k
4
votes
Removing electron from inner shell of an atom
Yes, a photoelectric transition (usually with incident X-rays) can
eject an inner electron; Ag X-ray absorption
The highest-energy sharp edge is the onset of 1S electron ejection, and
at/near the edge …
- 10.2k
7
votes
Where do gamma ray photons come from?
Photons are created by charges changing orbital state, or being accelerated. In an atom, this can mean electrons making a transition between energy levels (and that is where most visible light, and …
- 10.2k
1
vote
Absorbtion of photon
An unperturbed atom is unlikely to absorb a photon which does not correspond to
an available excited energy level for an electron.
It is unlikely because Heisenberg's uncertainty principle sets time …
- 10.2k