6533b835fe1ef96bd129fdcf

RESEARCH PRODUCT

The closed form of the second-order energy shift for the discrete spectrum of atomic hydrogen

E KaruleA Gailitis

subject

Floquet theoryPhysicsContinuum (measurement)HydrogenContinuous spectrumchemistry.chemical_elementCondensed Matter PhysicsAtomic and Molecular Physics and OpticsDiscrete spectrumchemistryEnergy shiftAtomic physicsGround stateRadiant intensity

description

The closed form of the second-order energy shift for the discrete spectrum of atomic hydrogen is obtained, which allows us to evaluate the level shift in both cases, when the intermediate states are in continuum and in the discrete spectrum, except the resonances. The values of the second-order shift of the energy of the ground state calculated by us are in good agreement with those obtained by us and other authors using the nonperturbative Floquet method in average up to a radiation intensity of 1015 W cm−2.

https://doi.org/10.1088/0953-4075/37/4/010