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Alkali Metal Dispensers (AMDs) are compact sources of alkali metals. They may be used to prepare photosensitive surfaces of photocathodes, or wherever an ultrapure alkali metal film is needed.
The alkali metal generating source is a mixture of an alkali metal chromate with a reducing agent.
A research program at SAES Getters S.p.A. into methods of controlling the release of pure alkali metals led to the development of SAES AMDs. |
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SAES Alkali metal dispensers are especially suitable when:
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Very pure alkali metal films are required
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Evaporation rate must be controllable and reproducible
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Loose particles cannot be tolerated
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The device must be free of harmful gases during deposition of the alkali metal. |
The reducing agent in SAES AMDs is SAES’ St101 (Zr 84%-Al 16%) getter alloy. In addition to reducing the alkali back to its metallic state, St101 also removes chemically reactive gases from the device, preventing them from contaminating the alkali metal vapor.
SAES AMDs are available to deposit Cs, K, Na, Rb and Li. They are available in precut sizes with terminals or in bulk wire. Curved shapes are available.
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