Significance of M2 and E3 transitions for $4p^{5}4d^{N+1}$ and $4p^{6}4d^{N-1}4f$ configuration metastable level lifetimes

Abstract

Magnetic quadrupole and electric octupole transitions from the configurations $4p^{5}4d^{N+1}$ and $4p^{6}4d^{N-1}4f$ were calculated along with magnetic dipole, electric dipole and electric quadrupole radiative transitions in quasirelativistic Hartree-Fock approximation. Their significance in determining the metastable level radiative lifetimes was investigated along several isoelectronic sequences for the ions from $Z=50$ to $Z=92$. Strontium-like ions, zirconium-like ions, molybdenum-like ions and rhodium-like ions were studied comprehensively. Remaining isoelectronic sequences with the ground configuration $4d^N$ ($N=1,3,5,7,8,10$) were also reviewed albeit in less detail. A systematic trends of determined total radiative lifetimes were studied. The importance of magnetic quadrupole and electric octupole transitions from metastable levels of ions from these isoelectronic sequences was investigated and discussed. Inclusion of such transitions of higher multipole order can change theoretical radiative lifetime values for some levels more than ten times. These cases can not be established in advance, without `performing detailed calculations.

References in corpus (2)

• Multipole (E1, M1, E2, M2, E3, M3) transition wavelengths and rates between 3l5l' excited and ground states in nickel-like ions
• Theoretical energy level spectra and transition data for 4p${}^6$4d${}^2$, 4p${}^6$4d4f and 4p${}^5$4d${}^3$ configurations of W${}^{36+}$ ion

Cited by in corpus (2)

• Energy level properties of 4p${}^6$4d${}^3$, 4p${}^6$4d${}^2$4f and 4p${}^5$4d${}^4$ configurations of W${}^{35+}$ ion
• Second-order Rayleigh-Schrödinger Perturbation Theory for the {\sc Grasp}2018 Package: Core-valence Correlations