<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>D</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math> line broadening and hyperfine frequency shift coefficients for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Rb</mml:mi><mml:mprescripts/><mml:none/><mml:mn>87</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cs</mml:mi><mml:mprescripts/><mml:none/><mml:mn>133</mml:mn></mml:mmultiscripts></mml:math> in Ne, Ar, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">N</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Li-Chung Ha, Xianli Zhang, Nakri Dao, K. Richard Overstreet
Abstract
Accurate measurements of optical line broadening and microwave hyperfine transition shifts are essential for optimizing the performance of buffer-gas atomic clocks. Previous literature has reported inconsistent measurement values. We report measurements of the ${D}_{1}$ transition broadening and hyperfine frequency shift coefficients for $^{87}\mathrm{Rb}$ and $^{133}\mathrm{Cs}$ due to collisions with Ne and Ar atoms, as well as ${\mathrm{N}}_{2}$ molecules which is commonly employed for quenching in gas cell atomic clocks.
Topics & Concepts
Hyperfine structureLine (geometry)PhysicsAtomic physicsAnalytical Chemistry (journal)Nuclear magnetic resonanceChemistryMathematicsChromatographyGeometryAtomic and Subatomic Physics ResearchAdvanced Frequency and Time StandardsNon-Invasive Vital Sign Monitoring