TOPbase: Photoionisation Cross Sections
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e-levels
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For the ionic system or range of systems, please indicate
Atomic number (NZ):
All
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
18
20
26
-
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
18
20
26
Electron number (NE):
All
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
-
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
If for each system you are interested in a particular spectroscopic series or range of series, please indicate
Spin multiplicity (2S+1):
All
1
2
3
4
5
6
7
8
9
-
0
1
2
3
4
5
6
7
8
9
Angular momentum (L):
All
0
1
2
3
4
5
6
7
8
9
-
0
1
2
3
4
5
6
7
8
9
Parity (P, even=0, odd=1):
Both
0
1
-
0
1
If you want to be more specific, specify a range of
Levels:
-
or
Energy (Ryd):
-
Do you want levels ordered in:
Level order in each series?
General energy order?
Each level is uniquely idenfied by its
Atomic number (NZ)
Electron number (NE)
SLPI = (2S+1)*100+L*10+P
Level index.