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Results tagged with atomic-physics
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user 358408
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.
1
vote
Accepted
Dipole transitions between He states
From the NIST webpage one of the selection rules is:
$\Delta M_J =0 , \pm1$, except transitions $ M_J = 0\rightarrow0$ when $\Delta J=0$
And in the described case of $P_1 \rightarrow S_1$ the $\Delt …
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2
votes
Accepted
Why can an electric dipole transition allow $\Delta L=0,\pm2$ in hydrogen-like atoms?
$\Delta L = 2$ refers to a quadrupole transition or a transition realized with two photons absorbed by your sample. In a typical single photon induced transition - dipole one, you have those "Rigorous …
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2
votes
Phase estimation in contrast interferometry
In practice, you need to be able to scan your $\phi$ to determine crucial parameters of your interferometer from fits, like contrast or transfer function. When you know those details you manually adju …
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0
votes
How is total angular momentum conserved in electric dipole transitions for $ΔJ = 0$ in a mul...
A good example when $\Delta J = 0$ is a Rubidium D1 line transition:
$$ 5 ^2 \text{S}_{1/2} \rightarrow 5 ^2 \text{P}_{1/2} $$
at 795 nm. In that case: $\Delta S = 0$ and the only available electron c …
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0
votes
Does the AC Stark Effect in Multilevel Systems depend on whether a state is populated or not?
If I understood you correctly, the experiment you proposed is an example of an electromagnetically induced transparency (EIT) setup with cold/ultracold matter. In this case, you would prepare your sam …
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0
votes
Do lasers with optical isolator or synchrotron radiation sources allow for Rabi cycles?
I believe that OP's question stems from a misconception that when Rabi flopping is driven, the energy is transferred between the two-level system and the source of the radiation. This is not true beca …
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3
votes
Accepted
Linewidth of the Caesium clock
The energy difference between every two atomic levels is a well-defined value, as those levels represent distinctive quantum states. So there is no problem with a statement that those two hyperfine le …
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