Measurement of the scalar polarizability of the indium6p1/2state using two-step atomic-beam spectroscopy
| Autor: | P. M. Rupasinghe, Benjamin Augenbraun, P. K. Majumder, Allison Carter |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Physical Review A. 94 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.94.022515 |
| Popis: | We completed a measurement of the Stark shift within the $^{115}\mathrm{In}\phantom{\rule{4pt}{0ex}}6{s}_{1/2}\ensuremath{\rightarrow}6{p}_{1/2}$ excited-state transition using two-step laser spectroscopy in an indium atomic beam. By combining this measurement with recent experimental results we determine the scalar polarizability ${\ensuremath{\alpha}}_{0}$ of the $6{p}_{1/2}$ state to be $7683\ifmmode\pm\else\textpm\fi{}43{a}_{0}^{3}$ (in atomic units), a result which agrees very well with recent theoretical calculations. In this experiment, one laser, stabilized to the $5{p}_{1/2}\ensuremath{\rightarrow}6{s}_{1/2}\phantom{\rule{4pt}{0ex}}410$ nm transition, was directed transversely to the atomic beam, while a second, overlapping laser was scanned across the 1343 nm $6{s}_{1/2}\ensuremath{\rightarrow}6{p}_{1/2}$ transition. We utilized two-tone frequency-modulation spectroscopy of the infrared laser beam to measure the second-step absorption in the interaction region, where the optical depth is less than ${10}^{\ensuremath{-}3}$. In the course of our experimental work we also determined the hyperfine splitting within the $6{p}_{1/2}$ state, improving upon the precision of an existing measurement. |
| Databáze: | OpenAIRE |
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