- #1
kmp
- 14
- 0
why sodium has two lines D1 and D2 ?
Why does sodium light have two distinct wavelengths?
- Thread starter kmp
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- Light Sodium Wavelength
In summary, the wavelength of sodium light is approximately 589 nanometers and is important in spectroscopy and as a standard for measuring other wavelengths. It is determined by the energy levels of electrons in a sodium atom and the doublet in the spectrum helps identify the presence of sodium. While the wavelength cannot be changed in a vacuum, it may be affected by external factors such as temperature and pressure.
- #2
- 32,820
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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
- 93
- 0
Those are transitions from two fine levels.
That's [tex]^2P_{1/2} \to ^2S[/tex] and [tex]^2P_{3/2} \to ^2S[/tex]
That's [tex]^2P_{1/2} \to ^2S[/tex] and [tex]^2P_{3/2} \to ^2S[/tex]
- #5
- 12,180
- 182
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:
FAQ: Why does sodium light have two distinct wavelengths?
What is the wavelength of sodium light?
The wavelength of sodium light is approximately 589 nanometers.
Why is the wavelength of sodium light important?
The wavelength of sodium light is important because it is commonly used in spectroscopy and as a standard for measuring other wavelengths.
How is the wavelength of sodium light determined?
The wavelength of sodium light is determined by the energy levels of the electrons in a sodium atom. When excited, these electrons emit light at a specific wavelength.
What is the significance of the doublet in the sodium light spectrum?
The doublet in the sodium light spectrum refers to the two closely spaced lines at 589.0 and 589.6 nanometers. This doublet is important in spectroscopy as it helps identify the presence of sodium in a sample.
Can the wavelength of sodium light be changed?
The wavelength of sodium light cannot be changed in a vacuum, but it can be affected by factors such as temperature and pressure. These changes can cause a slight shift in the wavelength of the light emitted by sodium atoms.