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[
General Glossary,
Quantum Glossary,
Atomic Glossary
]
The Hydrogen Lyman Series
The Hydrogen Lyman Series
are the series of transitions
between the n = 1 shell
(ie. the K-shell) and the
n > 1 shells
(ie L-, M-, N-shells etc).
The lines are those allowed by the selection rules
Delta l = +/- 1,
Delta j = 0, +/- 1.
Given the abundance of hydrogen in the universe, these
lines are very common and hence given short-hand,
customary names:
Energy (eV)
[Wavelength (nm)]
|
Ion
|
Lower Config
Upper Config
|
Notes
|
10.19881
[121.56736]
|
HI
|
1s 2S1/2
2p 2Po1/2
|
Ly-alpha2
Aki = 6.265x108 s-1
fki = 1.388x10-1
|
10.19885
[121.56682]
|
HI
|
1s 2S1/2
2p 2Po3/2
|
Ly-alpha1
Aki = 6.265x108 s-1
fki = 2.778x10-1
|
12.08749
[102.57229]
|
HI
|
1s 2S1/2
3p 2Po1/2
|
Ly-beta3
Aki = 1.672x108 s-1
fki = 2.637x10-2
|
12.08751
[102.57218]
|
HI
|
1s 2S1/2
3p 2Po3/2
|
Ly-beta1
Aki = 1.672x108 s-1
fki = 5.275x10-2
|
12.74853
[97.25370]
|
HI
|
1s 2S1/2
4p 2Po1/2
|
Ly-gamma2
Aki = 6.818x107 s-1
fki = 9.668x10-3
|
12.74854
[97.2566]
|
HI
|
1s 2S1/2
4p 2Po3/2
|
Ly-gamma1
Aki = 6.818x107 s-1
fki = 1.934x10-2
|
13.05450
[94.97431]
|
HI
|
1s 2S1/2
5p 2Po1/2
|
Ly-delta2
Aki = 3.437x107 s-1
fki = 4.648x10-3
|
13.05450
[94.9729]
|
HI
|
1s 2S1/2
5p 2Po3/2
|
Ly-delta1
Aki = 3.347x107 s-1
fki = 9.296x10-3
|
|
etc
|
|
etc
|
etc
|
See also
Hydrogen Energy Levels or
Other Astronomically Important Lines
Things to Note
- There is actually a pair of allowed transitions for each line.
- (these are permitted lines)
- The oscillator strengths are in the ratio of 1:2
- (due to the different number of states)
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