- #1
kmp
- 14
- 0
why sodium has two lines D1 and D2 ?
Why does sodium light have two distinct wavelengths?
- Context: Undergrad
- Thread starter kmp
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- Light Sodium Wavelength
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SUMMARY
Sodium light exhibits two distinct wavelengths, known as D1 and D2, due to spin-orbit coupling that splits the 3p orbital, removing degeneracy. The transitions responsible for these wavelengths are from the fine structure levels of ^2P_{1/2} to ^2S and ^2P_{3/2} to ^2S. This phenomenon is well-documented in resources such as HyperPhysics, which provides detailed explanations and visual aids related to sodium's spectral lines.
PREREQUISITES- Understanding of quantum mechanics principles, specifically spin-orbit coupling.
- Familiarity with atomic orbital theory and fine structure levels.
- Knowledge of spectral lines and their significance in atomic physics.
- Basic proficiency in interpreting scientific diagrams and images related to quantum states.
- Research the concept of spin-orbit coupling in quantum mechanics.
- Study the fine structure of hydrogen-like atoms and their spectral lines.
- Explore the implications of atomic transitions on light emission and absorption.
- Learn about the applications of sodium light in spectroscopy and its relevance in various scientific fields.
Students of physics, particularly those focusing on quantum mechanics, atomic physics researchers, and professionals involved in spectroscopy and light emission studies.
- #2
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The spin-orbit coupling splits the 3p orbital and removes the degeneracy. Read here:
http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodium.html
Zz.
http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodium.html
Zz.
- #3
kmp
- 14
- 0
it may be due to transition between s1/2 and p3/2, p1/2 and p3/2 states
- #4
guerom00
- 90
- 0
Those are transitions from two fine levels.
That's ^2P_{1/2} \to ^2S and ^2P_{3/2} \to ^2S
That's ^2P_{1/2} \to ^2S and ^2P_{3/2} \to ^2S
- #5
- 12,178
- 186
In addition to ZapperZ's link, there is
http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodzee.html#c1
which has this image:
http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodzee.html#c1
which has this image:
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