Paschen series

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In physics, the Paschen series (also called Ritz-Paschen series) is the series of transitions and resulting emission lines of the hydrogen atom as an electron goes from n ≥ 4 to n = 3, where n refers to the principal quantum number of the electron. The transitions are named sequentially by Greek letter: n = 4 to n = 3 is called Paschen-alpha, 5 to 3 is Paschen-beta, 6 to 3 is Paschen-gamma, etc.

They are named after the Austro-German physicist Friedrich Paschen.

Paschen series, in the infrared, measured lines with wavelengths (nm):

4-3 --- 1874.5

5-3 --- 1281.4

6-3 --- 1093.5

7-3 --- 1004.6

8-3 ---- 954.3

9-3 ---- 922.6

10-3 --- 901.2

11-3 --- 886.0

12-3 --- 874.8

13-3 --- 866.2

limit: 820.1 nm

See also

• Bohr model
• H-alpha
• Hydrogen spectral series
• Rydberg formula
• Balmer series
• Lyman series
• Brackett series
• Pfund series
• Humphreys series

Template:Quantum-stubde:Paschen-Serie pl:Seria Paschena

External references

• Paschen series (animation)