Measurement of the scalar polarizability within the 5P1/2-6S1/2, 410 nm transition in atomic indium

Abstract

We have completed a new measurement of the Stark shift in 115In within the 410 nm 5P1/2- 6S1/2 transition. We measure the Stark shift constant to be kS= - 122.92(33)kHz/(kV/cm)^2, corresponding to a difference in the 6S1/2 and 5P1/2 state polarizabilities, Δα_0, of 1000.2 (2.7) a.u.(in atomic units). This result is a factor of 30 more precise than previous measurements and is in excellent agreement with a new theoretical value based on an ab initio calculation of the wave functions in this three-valence-electron system. The measurement was performed in an indium atomic beam apparatus, used a GaN laser diode system, and exploited an FM spectroscopy technique to extract laser transmission spectra under conditions where our interaction region optical depth was typically less than 10^-3.

10 pages, 11 figures

References in corpus (3)

• Development of a configuration-interaction + all-order method for atomic calculations
• Electric dipole moment enhancement factor of thallium
• Relativistic many-body calculations of the Stark-induced amplitude of the 6P1/2 -7P1/2 transition in thallium

Cited by in corpus (7)

• Polarizabilities, Stark shifts, and lifetimes of In atom
• Thallium 7p lifetimes derived from experimental data and ab initio calculations of scalar polarizabilities
• Measurement of 7p${}_{1/2}$-state hyperfine structure and 7s${}_{1/2}$-7p${}_{1/2}$ transition isotope shift in ${}^{203}$Tl and ${}^{205}$Tl
• High-precision measurements and theoretical calculations of indium excited-state polarizabilities
• Measurement of the scalar polarizability of the indium $6p_{1/2}$ state using two-step atomic-beam spectroscopy
• Measurement of hyperfine constants and the isotope shift of rubidium 5P${}_{1/2}$ excited-state using Saturated Absorption Spectroscopy
• High-precision measurement and ab initio calculation of the $(6s^{2}6p^2){}^3{P}_0\to {}^3{P}_2$ electric quadrupole transition amplitude in ${}^{208}$Pb