The radiative decay of metastable nsnp $^{3}P_{0}$ atomic states is found to occur only by odd-parity multiphoton modes such as $E1M1$ and $3E1$ , in the absence of hyperfine structure. A detailed calculation of the $E1M1$ rates for several members of the Be sequence is presented, in the nonrelativistic approximation. Only the general properties of $3E1$ decay are presented. Among other results, the $3E1$ rate is found to be zero if any two photons have the same energy, and its spectrum, unlike the symmetrical two-photon spectra, is found to be irregular and asymmetric, being peaked somewhat below half the transition energy.The radiative decay of metastable nsnp $^{3}P_{0}$ atomic states is found to occur only by odd-parity multiphoton modes such as $E1M1$ and $3E1$, in the absence of hyperfine structure. A detailed calculation of the $E1M1$ rates for several members of the Be sequence is presented, in the nonrelativistic approximation. Only the general properties of $3E1$ decay are presented. Among other results, the $3E1$ rate is found to be zero if any two photons have the same energy, and its spectrum, unlike the symmetrical two-photon spectra, is found to be irregular and asymmetric, being peaked somewhat below half the transition energy.

Physical Review AMay 1, 197329 citations

Radiative transition rates of collisionally perturbed atoms in an intense monochromatic field

F. Schuller, Gerard Nienhuis

Physica B+CJun 1, 19832 citations

Fluorescence of rubidium vapor in a transient interaction regime

Artur Aleksanyan, Svetlana Shmavonyan, E. A. Gazazyan +4 more

We have studied modification of the fluorescence spectra of a room-temperature atomic rubidium vapor in the region of 85 R b and 87 R b D 2 lines while changing the temporal rate of linear (triangular) scanning of laser radiation frequency. An increase in the ramping speed over a certain value ( ≈ 10 6 M H z / s ) results in essential modification of magnitudes of individual atomic transitions, different on rising and falling slopes, which characterize transition from a steady-state interaction regime to a transient one. Our experimental results are very consistent with the developed theoretical model. The obtained results can be used for determination of atomic system parameters such as ground-state relaxation rate. Possible follow-up actions for the addressed control of atomic level population are discussed.We have studied modification of the fluorescence spectra of a room-temperature atomic rubidium vapor in the region of 85 R b and 87 R b D 2 lines while changing the temporal rate of linear (triangular) scanning of laser radiation frequency. An increase in the ramping speed over a certain value ( ≈ 10 6 M H z / s ) results in essential modification of magnitudes of individual atomic transitions, different on rising and falling slopes, which characterize transition from a steady-state interaction regime to a transient one. Our experimental results are very consistent with the developed theoretical model. The obtained results can be used for determination of atomic system parameters such as ground-state relaxation rate. Possible follow-up actions for the addressed control of atomic level population are discussed.

arXiv:1909.00212Journal of the Optical Society of America BDec 23, 20198 citations

Radiative transitions

B. K. Ridley FRS

Oxford University Press eBooksAug 8, 20132 citations

The radiative decay of metastable nsnp

^{3}P_{0}

atomic states is found to occur only by odd-parity multiphoton modes such as

E1M1

and

3E1

, in the absence of hyperfine structure. A detailed calculation of the

E1M1

rates for several members of the Be sequence is presented, in the nonrelativistic approximation. Only the general properties of

3E1

decay are presented. Among other results, the

3E1

rate is found to be zero if any two photons have the same energy, and its spectrum, unlike the symmetrical two-photon spectra, is found to be irregular and asymmetric, being peaked somewhat below half the transition energy.