Determination of radiative lifetimes of neutral sulphur by time-resolved three-photon VUV laser spectroscopy

被引：5
|
作者：
Li, ZS
Persson, A
Svanberg, S
Garnir, HP
Biemont, E
机构：
[1] Lund Inst Technol, Dept Phys, S-22100 Lund, Sweden
[2] Univ Liege, Inst Astrophys, B-4000 Liege, Belgium
来源：
EUROPEAN PHYSICAL JOURNAL D | 1998年 / 2卷 / 01期
关键词：
D O I：
10.1007/s100530050103
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Radiative lifetimes of the highly exited states 3p(3)8s S-3(1)0 and 3p(3)6d D-3(1,2,3)0 of neutral sulphur have been measured using time-resolved laser-induced fluorescence. The sulphur atoms were generated in a laser-produced plasma. The investigated states were populated through a two-step process involving a two-photon excitation to the lowest excited tripler state of even parity 3p(4) P-3(0,1,2), followed by a one-photon excitation to the investigated state. We obtained tau(8s(3)S(1)(0)) = 40 +/- 5 ns and tau(6d(3)D(1,2,3)(0)) = 75 +/- 7 ns. These values are much longer than theoretically predicted ones and much shorter than those indirectely inferred from astronomical data.
引用
收藏
页码：11 / 14
页数：4
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