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Isotope shift measurement of the 423-nm transition in neutral Ca

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arxiv 2406.06806 v1 pith:GACRTAZC submitted 2024-06-10 physics.atom-ph quant-ph

David Röser , Lukas Möller , Hans Ke{ss}ler , Simon Stellmer This is my paper
classification physics.atom-phquant-ph
keywords transitiondeterminedisotopekingshiftvaluesabsorptionabundant
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abstract

We report on saturated absorption spectroscopy measurements of the $(4s^2) ^{1}S_0\rightarrow(4s4p) ^{1}P_1$ transition for the four most abundant even-mass isotopes in calcium. By referencing the laser locked to an ultralow expansion cavity and carefully investigating systematic errors, isotope shifts are determined with a precision below 100 kHz, improving previously reported values by a factor of about five. A King plot analysis employing literature values of the 729-nm transition in Ca ions shows excellent linearity. The field and mass shift parameters are determined from King plots with other transitions.

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Cited by 1 Pith paper

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  1. Towards a Global Search for New Physics with Isotope Shifts

    physics.atom-ph 2025-06 conditional novelty 7.0 of 10

    kifit, a new fit framework, combines isotope shift data from multiple elements into global constraints on new boson couplings to electrons and neutrons.

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