@article{deiglmayr_precision_2016,
	title = {Precision measurement of the ionization energy of {Cs} {I}},
	volume = {93},
	url = {http://link.aps.org/doi/10.1103/PhysRevA.93.013424},
	doi = {10.1103/PhysRevA.93.013424},
	abstract = {We present absolute-frequency measurements for the transitions from the 6s1/2 ground state of Cs133 to np1/2 and np3/2 Rydberg states. The transition frequencies are determined by one-photon UV spectroscopy in ultracold samples of Cs atoms using a narrow-band laser system referenced to a frequency comb. From a global fit of the ionization energy EI and the quantum defects of the two series we determine an improved value of EI/hc=31406.4677325(14)cm−1 for the ionization energy of Cs with a relative uncertainty of 5×10−11. We also report improved values for the quantum defects of the np1/2, np3/2, ns1/2, and nd5/2 series.},
	number = {1},
	urldate = {2016-01-29},
	journal = {Physical Review A},
	author = {Deiglmayr, Johannes and Herburger, Holger and Saßmannshausen, Heiner and Jansen, Paul and Schmutz, Hansjürg and Merkt, Frédéric},
	month = jan,
	year = {2016},
	keywords = {Precision Measurements, Ultracold Rydberg gases},
	pages = {013424},
}

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