Rubidium dimers in paraffin-coated cells

TL;DR

This study measures rubidium dimer vapor density in paraffin-coated cells using optical spectroscopy, finding no significant difference from uncoated cells within a limited temperature range.

Contribution

It provides the first quantitative comparison of rubidium dimer densities in paraffin-coated versus uncoated cells across a specific temperature range.

Findings

Dimer density less than 10^7 cm^(-3) at 43°C

Sensitivity better than 10^6 cm^(-3) with one-minute integration

No significant difference in dimer density between coated and uncoated cells

Abstract

Measurements were made to determine the density of rubidium dimer vapor in paraffin-coated cells. The number density of dimers and atoms in similar paraffin-coated and uncoated cells was measured by optical spectroscopy. Due to the relatively low melting point of paraffin, a limited temperature range of 43-80 deg C was explored, with the lower end corresponding to a dimer density of less than 10^7 cm^(-3). With one-minute integration time, a sensitivity to dimer number density of better than 10^6 cm^(-3) was achieved. No significant difference in dimer density was observed between the cells.