Li Wang, Jun-feng Zhen, Qun Zhang, Yang Chen. B-X and C-X Band Systems of CuCl Revisited: Laser-induced Fluorescence Study in 465−490 nm[J]. Chinese Journal of Chemical Physics , 2010, 23(3): 249-251. doi: 10.1088/1674-0068/23/03/249-251
Citation: Li Wang, Jun-feng Zhen, Qun Zhang, Yang Chen. B-X and C-X Band Systems of CuCl Revisited: Laser-induced Fluorescence Study in 465−490 nm[J]. Chinese Journal of Chemical Physics , 2010, 23(3): 249-251. doi: 10.1088/1674-0068/23/03/249-251

B-X and C-X Band Systems of CuCl Revisited: Laser-induced Fluorescence Study in 465−490 nm

doi: 10.1088/1674-0068/23/03/249-251
Funds:  This work was supported by the National Natural Science Foundation of China (No.20673107 and No.20873133), the National Key Basic Research Special Foundation of China (No.G2007CB815203 and No.2010CB923302), and the Chinese Academy of Sciences (No.KJCX2-YW-N24).
  • Received Date: 2010-04-13
  • We have reinvestigated the B-X and C-X band systems of CuCl by recording the laser-induced fluorescence excitation spectra in 20400?21800 cm?1. The rotational analyses in Hund’s case (a) revealed unambiguously a singlet-to-singlet transition nature. The radiative lifetimes were measured to be 4.670 and 4.667 μs, respectively, which are much longer than that expected for a pure singlet of CuCl. This implies that the fluorescence mechanism in the B or C band systems lies in the mixing of the singlets (1Пand 1+) and triplets (3П0,1,2) and that the two excited states observed in our experiment might be the singlets that have been strongly “contaminated” by their triplet neighbors.
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B-X and C-X Band Systems of CuCl Revisited: Laser-induced Fluorescence Study in 465−490 nm

doi: 10.1088/1674-0068/23/03/249-251
Funds:  This work was supported by the National Natural Science Foundation of China (No.20673107 and No.20873133), the National Key Basic Research Special Foundation of China (No.G2007CB815203 and No.2010CB923302), and the Chinese Academy of Sciences (No.KJCX2-YW-N24).

Abstract: We have reinvestigated the B-X and C-X band systems of CuCl by recording the laser-induced fluorescence excitation spectra in 20400?21800 cm?1. The rotational analyses in Hund’s case (a) revealed unambiguously a singlet-to-singlet transition nature. The radiative lifetimes were measured to be 4.670 and 4.667 μs, respectively, which are much longer than that expected for a pure singlet of CuCl. This implies that the fluorescence mechanism in the B or C band systems lies in the mixing of the singlets (1Пand 1+) and triplets (3П0,1,2) and that the two excited states observed in our experiment might be the singlets that have been strongly “contaminated” by their triplet neighbors.

Li Wang, Jun-feng Zhen, Qun Zhang, Yang Chen. B-X and C-X Band Systems of CuCl Revisited: Laser-induced Fluorescence Study in 465−490 nm[J]. Chinese Journal of Chemical Physics , 2010, 23(3): 249-251. doi: 10.1088/1674-0068/23/03/249-251
Citation: Li Wang, Jun-feng Zhen, Qun Zhang, Yang Chen. B-X and C-X Band Systems of CuCl Revisited: Laser-induced Fluorescence Study in 465−490 nm[J]. Chinese Journal of Chemical Physics , 2010, 23(3): 249-251. doi: 10.1088/1674-0068/23/03/249-251

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