On the non-BoltzmannA-X emission in Na2 following laser excitation of theB state |
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Authors: | A Sharma G L Bhale M A N Razvi M N Dixit |
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Affiliation: | (1) Spectroscopy Division, Bhabha Atomic Research Centre, 400 085 Trombay, Bombay, India |
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Abstract: | A 1Σ u + -X 1Σ g + emission in Na2 is observed following excitation ofB 1π u by various lines of an argon ion laser. The excitation energy ofB 1π u is collisionally transferred to the (2)1Σ g + which then radiatively populates theA 1Σ u + state. The Na vapour is contained in a stainless steel crossed heat pipe with Ar buffer gas and temperature around 600°C. For all laser lines except 4579 Å, the coarse features ofA-X emission are independent of the laser wavelength. However, at high resolution the finer differences between different laser line excitation are explained. Variousv′-v″ transitions in this emission are identified. Computer simulation is presented to help explain some features of this emission. |
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Keywords: | Na2 energy transfer argon ion laser |
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