Fluorescence studies of CS2 and SO2 at 121.6, 73.6–74.4 and 58.4 nm |
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| Authors: | I A Prajapati S M Ahmed Vijay Kumar |
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| Institution: | (1) Physical Research Laboratory, 380 009 Navrangpura, Ahmedabad, India |
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| Abstract: | The fluorescence spectra of CS2 and SO2 have been studied at three incident photon wavelengths of 121.6, 73.6–74.4 and 58.4 nm and relative production cross sections
for different product states have been measured. The CS(A
1Π→X
1Σ+) system between 240 and 290nm has been obtained when CS2 is photoexcited at 121.6nm whereas CS
2
+
(B
2Σ
u
+
→X
2Π
g
) and CS
2
+
(A
2Π
u
→X
2Π
g
) systems have been produced between 276 and 295 and 437 and 555nm respectively when excited by both the incident photon wavelengths
of 73.6–74.4 and 58.4nm. The fluorescence spectra of SO2 obtained at 121.6 and 73.6–74.4nm include the vibrational bands of SO(A
3Π→X
3Σ−) and SO(B
2Π−→X
3Σ−) systems from 240 to 268 and 268 to 442nm respectively whereas the emission spectrum at 58.4nm, has contributions from the
two SO systems and SO+(A
2Π→X
2Π) system. In all these emission spectra, the fluorescence bands of different systems have been analyzed and their relative
production cross sections have been measured. The results obtained in the present investigations have been compared with a
few recent reliable measurements reported in literature. |
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| Keywords: | Fluorescence photon impact molecules photoionization photodissociation dissociative photoionization |
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