Thermal Photoionization of the Rydberg Atoms by the Blackbody Radiation: New Relativistic Approach

Abstract

Abstract. Within the gauge-invariant quantum electrodynamics perturbation theory it is presented a new relativistic approach to definition of the thermal photoionization characteristics for the Rydberg atoms, in particular, the Rydberg atoms, ionized by the Blackbody radiation. Theory of corresponding phenomena in the Rydberg systems is a basis for creation of new class of the atomic sensors.

Energy Approach to Collisional Ionization of the Rydberg Atoms: Quantum Defect Approximation

“…Naturally for the bound states the corresponding components, where E alk =E and the functions s l , c l represent the normalized (on energy) regular and non-regular Coulomb functions. Further using the quantum defect approximation functions in the energy approach scheme to calculating the electron-collisional ionization of the Rydberg atoms is the same as in the initial version of the method [4] (see also [21]).…”

“…In the last years a great success has been achieved in the applied atomic physics, laser physics, atomic sensors electronics. One could mention very perspective papers devoting to engineering so called Rydberg atoms with different mechanisms of ionization processes [5][6][7][8][9]. New schemes of the different atomic sensor devices are proposed.…”

“…But a great progress in experimental laser physics and appearance of the so called tunable lasers allow to get the highly excited Rydberg states of atoms. In fact this is a beginning of a new epoch in the atomic physics regarding the Rydberg atoms [1][2][3][4][5][6][7][8][9]. The experiments with Rydberg atoms had very soon resulted in the discovery of an important ionization mechanism, provided by unique features of the Rydberg atoms.…”

“…In the last years there is appearing a sufficiently great number of papers devoted to the collisional ionization of the Rydberg atoms within the on-relativistic and relativistic approaches (look refs. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]). Usually the standard methods of atomic physics, including the Hartree-Fock, Dirac-Fock, different model potential schemes, R-matrix and energy approaches etc [1][2][3][4] were used in order to define the electron-collisional ionization characteristics of neutral and even Rydberg atoms.…”

QUANTUM DEFECT APPROXIMATION IN THEORY OF RADIATIVE TRANSITIONS IN SPECTRUM OF Li-LIKE CALCIUM

“…In many papers the Dirac-Fock (DF) method, model potential, quantum defect approximation in the different realizations have been used for calculating the energies and oscillator strengths of the Li-like and similar ions (see Refs. [4][5][6][7][8][9][19][20][21][22][23][24][25][26][27][28][29][30]). The consistent QED calculations of the energies, ionization potentials, hyperfine structure constants for the Li-like ions are performed in Refs.…”