Broad-band structured fluorescence from NaI

Bower, R. D. ; Chevrier, P. ; Das, P. ; Foth, H. J. ; Polanyi, J. C. ; Prisant, M. G. ; Visticot, J. P. (1988) Broad-band structured fluorescence from NaI Journal of Chemical Physics, 89 (8). pp. 4478-4489. ISSN 0021-9606

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The emission spectrum of a molecular beam of NaI has been measured following excitation by the 248 nm KrF line of an excimer laser. The fluorescence structure, and the lifetime (17±2 ns), indicate the presence of a bound upper state not previously characterized. We identify this state as correlating with Na(32P)+I(52P3/2) atoms. Through numerical simulation using a Morse function representation for the upper state, we have determined approximate values for the well depth of 530±260 cm-1, well breadth of ~1.8 Å-1, and equilibrium separation of ~3.4 Å for this state. As a consequence of the breadth of this weakly bound excited state the bound→bound line spectrum spans a broad spectral range (87% of the ground state well depth) entirely comparable with spectra attributed to free→bound emission.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Sodium Iodides; Fluorescence; Emission Spectra; Molecular Beams; Laser Radiation; Excimer Lasers; Excitation
ID Code:86327
Deposited On:09 Mar 2012 10:36
Last Modified:09 Mar 2012 10:36

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