VACUUM-UV FLUORESCENCE SPECTROSCOPY OF SIF4 IN THE RANGE 10-30 EV
VACUUM-UV FLUORESCENCE SPECTROSCOPY OF SIF4 IN THE RANGE 10-30 EV
复制标题
10-30 EV 范围内 SIF4 的真空-紫外荧光光谱
DOI：
--
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
H. Jochims
中科院分区：
文献类型：
--
作者：
H. Biehl;K. J. Boyle;D. Seccombe;D. Smith;R. Tuckett;K. R. Yoxall;H. Baumgärtel;H. Jochims
本文报道了用荧光激发和色散发射技术研究SiF_4的真空紫外和可见光谱。荧光激发光谱已被记录的激发与同步辐射从BESSY 1，柏林源的能量范围为10-30 eV的平均分辨率为10.05 eV。通过与真空紫外吸收谱和电子能量损失谱的比较，对Rydberg谱中所有光解为碎片荧光态的峰进行了归属。分散的发射光谱已被记录在激发光谱中的所有峰的能量。观察到四种不同的衰变通道：（a）对于约13.0 eV的光子能量，在380-650 nm范围内的SiF 3荧光，（B）对于15.2-18.0 eV范围内的光子能量，在360-440 nm范围内的SiF 2 a 3B 1-X 1A 1磷光，（c）SiF_2A_1B_1-X_1A_1荧光在210-270 nm范围内，光子能量在17.0- 20.0eV范围内;
The vacuum-UV and visible spectroscopy of SiF4 using fluorescence excitation and dispersed emission techniques is reported. The fluorescence excitation spectrum has been recorded following excitation with synchrotron radiation from the BESSY 1, Berlin source in the energy range 10–30 eV with an average resolution of ∼0.05 eV. By comparison with vacuum-UV absorption and electron energy loss spectra, all the peaks in the Rydberg spectra that photodissociate to a fluorescing state of a fragment have been assigned. Dispersed emission spectra have been recorded at the energies of all the peaks in the excitation spectra. Four different decay channels are observed: (a) SiF3 fluorescence in the range 380–650 nm for photon energies around 13.0 eV, (b) SiF2 a 3B1–X 1A1 phosphorescence in the range 360–440 nm for photon energies in the range 15.2–18.0 eV, (c) SiF2 A 1B1–X 1A1 fluorescence in the range 210–270 nm for photon energies in the range 17.0–20.0 eV, and (d) emission from the D 2A1 state of SiF4+ predomin...