Summary
The emission from a plasma produced by laser focusing on plane targets of the elements Be, B, C and N has been observed in the visible and near ultraviolet. The spectra have been recorded mainly with an optical multichannel analyser allowing great sensitivity of detection. Both continua and line emission have been analysed in terms of plasma properties. Very broad lines of the type Δn=1 appear prominent in the spectrum and, through their Stark broadening, the electron density of the plasma has been derived.
Riassunto
Si è osservata nel visibile e vicino ultravioletto l’emissione da parte di un plasma prodotto da laser su bersagli di Be, B, C ed N. Gli spettri sono stati registrati, prevalentemente mediante un analizzatore ottico multicanale che permette una grande sensibilità di rivelazione. Si sono analizzate e correlate con le proprietà del plasma sia le emissioni di riga che di continuo. Nello spettro appaiono molto vistose righe del tipo Δn=1; esse risultano molto allargate e dalla misura del loro allargamento Stark si è ricavata la densità del plasma.
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Zago, A., Tondello, G. Spectroscopic observations in the visible and near ultraviolet of a laser-produced plasma. Nuov Cim B 85, 59–78 (1985). https://doi.org/10.1007/BF02721521
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DOI: https://doi.org/10.1007/BF02721521