Is the change in energy due to light-shift the same in all levels?

In summary, the conversation covers the topic of light-shift (Stark shift) in a three level system with discrete energies E0, E1, and E2. The conversation discusses whether the values of E1 and E2 would change by the same amount (\Delta E) or if \Delta E1 and \Delta E2 would be different. It is explained that the electron cloud has different shapes based on the energy and angular momentum of the electrons, resulting in different energy shifts when an electric field is applied. The direction of the shift depends on the changes in the initial and final states.
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ErezAgh
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TL;DR Summary
Reminder? In a three level system, with energies E0,E1,E2: would light-shift change the values of E1 and E2 by the same \Delta E? Or would \Delta E1 be different from \Delta E2?
Remind me please? In a three level system, with discrete energies E0,E1,E2: would light-shift (Stark shift), applied due to an external electric field, change the values of E1 and E2 by the same \Delta E? Or would \Delta E1 be different from \Delta E2?
 
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  • #2
Hello. Electron cloud has different shape according to energy and angular momentum of electrons, e.g. 1s, 2s,2p,3d. So each level has different energy shift in applying electric field.
 
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  • #3
anuttarasammyak said:
Hello. Electron cloud has different shape according to energy and angular momentum of electrons, e.g. 1s, 2s,2p,3d. So each level has different energy shift in applying electric field.
Thanks, will the shift be in the same direction, or can it be in different directions?
 
  • #4
Energy levels of atom electrons change by applying electric field. Stark effect is observation of energy gap between these energy levels so the sign of shift depends on both the changes of initial state and final state.
 
  • #5
anuttarasammyak said:
Energy levels of atom electrons change by applying electric field. Stark effect is observation of energy gap between these energy levels so the sign of shift depends on both the changes of initial state and final state.
Thank you.
 

FAQ: Is the change in energy due to light-shift the same in all levels?

1. How does light affect the energy levels of atoms and molecules?

The energy levels of atoms and molecules can be altered by the absorption or emission of light. When an atom or molecule absorbs a photon of light, it gains energy and its energy level increases. Conversely, when it emits a photon of light, it loses energy and its energy level decreases.

2. Is the change in energy due to light-shift the same for all energy levels?

No, the change in energy due to light-shift is not the same for all energy levels. The amount of energy gained or lost by an atom or molecule depends on the specific energy level it is transitioning between. Higher energy levels will experience a greater change in energy compared to lower energy levels.

3. How does the intensity of light affect the change in energy of energy levels?

The intensity of light does not directly affect the change in energy of energy levels. However, a higher intensity of light can lead to a higher rate of absorption or emission of photons, which can result in a greater overall change in energy for the atom or molecule.

4. Can the change in energy due to light-shift be measured experimentally?

Yes, the change in energy due to light-shift can be measured experimentally through techniques such as spectroscopy. These methods involve shining a specific wavelength of light onto a sample and measuring the changes in energy levels through the absorption or emission of photons.

5. How does the change in energy due to light-shift affect the behavior of atoms and molecules?

The change in energy due to light-shift can affect the behavior of atoms and molecules in various ways. For example, it can alter the stability of a molecule or change the frequency at which an atom emits light. Understanding these effects is crucial in fields such as quantum mechanics and spectroscopy.

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