M.G. Gurov1, E.G. Gurova2
1 FSUE “VNIIFTRI”, Mendeleevo, Moscow region, Russia;
2 Novosibirsk State University of Economics and Management (NSUEM), Novosibirsk, Russia;
gurov_mg@vniiftri.ru
Al’manac of Modern Metrology № 2 (38) 2024, pages 8–18
Abstract. The compactized source of the strontium atoms developed during a laser cooling experiment is described. The elements of the implemented design are made of the stainless steel. The implemented design of the atom source does not contain heating elements inside the vacuum system. The upper limit of the operating temperature is above 600–650 °C and is limited by the physical destruction of materials only. The angular divergence of the atomic beam is ~ 31 mrad. An atomic flux of no worse than 1013 [1/sec·cm2] is provided at a temperature of 430 °C and an observation distance of 33 cm.
The internal heated volume can be filled with more than 10 g of metal, such as strontium or ytterbium, with the potential operating life of more than 10 years for producing an atomic beam. The standard ceramic tubular heaters of the household soldering iron are used as heating elements of the volume with active metal. The heat flow insulation is provided by an isolated air gap between the heated volume and the external part of the main vacuum system.
Keywords: thermal atomic source, strontium, ytterbium, spectroscope.
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