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|Type:||Artigo de periódico|
|Title:||Construction Of An Atomic Beam System And Efficient Production Of Metastable States|
|Abstract:||We mounted a versatile atomic beam system, that can be operated with a large variety of chemical elements in their fundamental state or in metastable levels. This system permits to observe the electrical discharge region, turning possible to take the emission spectra of the excitation processes. The spectrum done for calcium is the first one in the literature in this condition, to our knowledge. After the excitation region, we found 45% of the atoms in the (4s4p) 3P 1,2,3 metastable triplet. In this work we present a general description of an atomic beam system, with the expected values for calcium and magnesium, and a detailed description of the vacuum system and the atomic source. We discuss the processes of excitation to the metastable levels, the characterization of the efficiency of the discharge to populate the metastable triplet and the emission spectra of the discharge region.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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