Photoionization of Al IV (neon-type) from its ground 2s
22p
6
1
S
e and excited 2s
22p
53p
3,1
P
0
3
S
e states using the R-matrix method |
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| Authors: | Man Mohan M Le Dourneuf A Hibbert PG Burke |
| |
| Institution: | (1) Department of Physics and Astrophysics, Delhi University, 110 007 Delhi, India;(2) Universitat Rennes 1, 3502 Rennes, France;(3) Department of Applied Mathematics and Theoretical Physics, Queen’s University of Belfast, BT7 1NN Belfast, Northern Ireland |
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| Abstract: | The R-matrix method is used to calculate the total photoionization cross-sections from the ground 2s
22p
6
1
S
e and the first three excited 2s
22p
53p
3,1
S
e states of Al IV, for photon energies ranging from the first ionization threshold to just above the second threshold of the
residual ion Al V. The two lowest LS terms of Al V − 2s
22p
5
2
P
0, 2s2p
6
2
S
e, 2s2p
6
2
S
e, represented by sophisticated configuration interaction wavefunctions, are included in the R-matrix calculation. The resulting cross-sections are affected by Rydberg series of resonances converging to the 2s2p
6
2
S
e excited threshold. |
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| Keywords: | Photoionization configuration interaction R-matrix method |
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