Vol. 35, issue 05, article # 3
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Abstract:
We present the results of calculating the vibrational and rotational terms of the X2Π and B2Σ+ electronic states of the phosphorus oxide (PO) molecule. The absorption spectrum corresponding to the electronic transition B2Σ+ (v´ = 0) - X2Π (v´´ = 0) has been calculated. The efficiency of laser excitation of PO molecules is estimated as a function of the spectral parameters of the radiation. It has been established that the excitation efficiency of the B2Σ+ (v´ = 0) - X2Π (v´´ = 0) electronic transition of the PO molecule is approximately an order of magnitude lower than that of the A2Σ+ (v´ = 0) - X2Π (v´´ = 0) transition. The result is of practical importance from the point of view of choosing the optimal scheme for laser excitation of the fluorescence of PO-fragments in the implementation of the method of remote detection of organophosphates.
Keywords:
phosphorus oxide, PO-fragments, absorption spectrum, laser excitation, thermalization, organophosphates
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