摘要
利用式E_Ⅱ(min)=E_B(K)-E_i(L_(23)^+L_(23)^+)可以从OKL_(23)L_(23)价态型俄歇跃迁能量求出氧的双电离能,它与杂多酸的Bronsted质子酸有一定的对应关系。本文利用铝靶的轫致辐射诱导MoL_3M_(45)M_(45)和PKL_(23)L_(23)俄歇跃迁,实现了在一个阳极和同一次实验情况下,既测得Mo、P特征的电光电子峰,又记录了高动能的俄歇峰。Mo、P的俄歇谱可表明杂原子与杂多配位原子的关系。
The bremsstrahlung induced Auger lines of kinetic energy of 1500～2500 eV were recordedby X-ray photo-electron spectroscopy. The principal photo-electron lines as well as the P andMo Auger lines of the heteropolyacids (HPA) were observed by bremsstrahlung radiation inone experiment at a same anode and with conventional Al-target. Although the intensitiesof the bremsstrahlung induced Auger lines are rather low, the signal to background ratiofor Mo L_3M_(45)M_(45) line is similar to that for Mo 3p_(1/2) in photoelectron spectra owingto the low values of the background at high energy rigion. From KL_(23)L_(23) Auger transitionof oxygen in HPA, the minimum energy for double electron removal can be obtained accor-ding to E_(11) (min) = EB(k)-E_i (L_(23)^+L_(23)^+).
出处
《应用化学》
CAS
CSCD
北大核心
1991年第5期1-5,共5页
Chinese Journal of Applied Chemistry
关键词
磷钼杂多酸
氧
双电离能
XPS能谱
phosphorus-molybdemum heteropolyacid
double ionization energy of oxy gen
bremsstrahlung-induced Auger transition
X-ray photoelectron spectroscopy
