Calculation of parity-nonconserving amplitude and other properties ofRa+

Abstract

We have calculated parity nonconserving 7s − 6d 3/2 amplitude EPNC in 2 23Ra + using highprecision relativistic all-order method where all single and double excitations of the Dirac-Fock wave functions are included to all orders of perturbation theory. Detailed study of the uncertainty of the parity nonconserving (PNC) amplitude is carried out; additional calculations are performed to estimate some of the missing correlation corrections. A systematic study of the parity conserving atomic properties, including the calculation of the energies, transition matrix elements, lifetimes, hyperfine constants, quadrupole moments of the 6d states, as well as dipole and quadrupole ground state polarizabilities, is carried out. The results are compared with other theoretical calculations and available experimental values.

Precision Measurement Method for Branching Fractions of ExcitedP1/2States Applied toCa+40Ramm1, Pruttivarasin2, Kokish3 et al. 2013Phys. Rev. Lett.485650View full textAdd to dashboardCite

“…In Sc ++ and Sr + , experimental measurements have yet to be done to verify theoretical calculations [23][24][25]. Heavier ions like Ba + , Yb + and Ra + are especially interesting in precision spectroscopy due to their prospects of observing parity non-conservation effects [7][8][9]26], which can be investigated by measuring various branching fractions and lifetimes of different atomic levels. Hg + , where no study of the branching fractions have been done, also has a suitable level structure [27].…”

“…Knowledge of these atomic properties is especially important for studying spectra of radiation from stars and other galactic objects [5,6]. Furthermore, precise measurement of atomic lifetimes and branching fractions can also be used to probe effects of weak interactions such as parity non-conservation of atomic levels [7][8][9][10].…”

Revisiting Parity Nonconservation in Cesium

“…To test the calculations even further we ran our code for the PNC in Ra + and found excellent agreement with [14] for the core contribution in RPA approximation.…”

Calculation of nuclear-spin-dependent parity nonconservation ins–dtransitions of Ba+, Yb

“…Calculations for Ra + were later performed in [18] and [22]. The only calculation of the spin-dependent PNC in Ra + was recently reported by Sahoo et al [23].…”