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http://hdl.handle.net/2122/632
Authors: | Rocco, A.* De Natale, G.* De Natale, P.* Gagliardi, G.* Gianfrani, L.* |
Title: | A diode-laser-based spectrometer for in-situ measurements of volcanic gases | Journal: | Applied Physics B, Laser and Optics | Series/Report no.: | 78 | Publisher: | Springer-Verlag | Issue Date: | 2004 | DOI: | 10.1007/s00340-003-1339-8 | Keywords: | spectrometer volcanic gases |
Subject Classification: | 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous | Abstract: | We report the first results of the field operation of a novel, portable diode-laser spectrometer for gasconcentration measurements in volcanic areas. Remote detection of direct absorption line shapes was possible thanks to a telecomsingle-mode optical fiber that delivered radiation from a room-temperature distributed-feedback diode laser, emitting at 1.997 µm, to an open-path multiple-reflection cell, placed on gas effluxes. The system was deployed on two different active volcanoes in Italy, where simultaneous and continuous monitoring of CO2 and H2O concentrations has been demonstrated. |
Appears in Collections: | Article published / in press |
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