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physics.atom-ph2025
On summation of -Wigner symbols
Alexey N. Hopersky, Alexey M. Nadolinsky, Rustam V. Koneev
Within the framework of the theory of irreducible tensor operators, using well-known general analytical results for double sums () of products of two -Wigner symbols…
physics.atom-ph2025
On the dipole approximation in the theory of photoionization of the atom
Alexey N. Hopersky, Alexey M. Nadolinsky, Rustam V. Koneev +1
In the nonrelativistic many-electron approximation of the theory of photoionization of the atom in the formalism of secondary quantization and the theory of irreducible tensor oper…