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Review of Scientific Instruments

Design of a three-stage alkali beam source

Melissa Lambropoulos, Stephen E. Moody

Published Feb 1, 1977• 30 citations
Publisher

Abstract

A three-stage effusive alkali beam source is described in detail. Among the advantages of this device over ordinary effusive ovens are greatly increased intervals between refillings, and the production of beams with significantly reduced alkali dimer densities.
DOI
10.1063/1.1134993

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We present a simple and inexpensive design for a multichannel effusive oven nozzle which provides improved atomic beam collimation and thus extended oven lifetimes. Using this design, we demonstrate an atomic lithium source suitable for trapped-atom experiments. At a nozzle temperature of 525 °C, the collimated atomic beam flux directly after the nozzle is 1.2 × 10(14) atoms/s with a peak beam intensity greater than 5.0 × 10(16) atoms/s/sr. This suggests an oven lifetime of several decades of continuous operation.