二乙酰分子内价轨道4a_g+4b_u的电子动量谱学研究  

Investigation of electron momentum spectroscopy for inner valence orbitals 4a_g+4b_u of diacetyl

作　　者：张书锋[1] 苏国林[1] 任雪光[1] 宁传刚[1] 周晖[1] 李彬[1] 李桂琴[1] 邓景康[1] 

机构地区：[1]清华大学物理系,北京100084

出　　处：《物理学报》2005年第4期1552-1556,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :1985 40 0 2 ;197740 3 7;10 2 740 40 );教育部博士点基金 (批准号 :19990 0 0 3 2 7)资助的课题~~

摘　　要：在高分辨率 (ΔE =1 15eV ,Δp≈ 0 1a .u .)电子动量谱仪上获得了二乙酰分子 (diacetyl)最内价轨道 4ag+4bu的电离能谱和动量谱的实验结果 ,并用Hartree Fock和密度泛函理论方法做了理论计算 .实验结果与理论计算符合较好 .The ionization energy spectra and the spherically averaged momentum distributions of inner valence orbitals for diacetyl have been investigated by using a high resolution (Delta E = 1. 15 eV, Delta(p) approximate to 0. 1 a. u.) electron momentum spectrometer. The impact energy was 1200 eV plus binding energy (i.e. 1201-1240 eV) and a symmetric non-coplanar kinematics was employed. The experimental ionization energy spectra have been compared with the published photoelectron spectra. The momentum profiles of inner valence orbitals 4a(g) + 4b(u) have been compared with the theoretical calculations obtained using Hartree-Fock method and density functional theory. The measured momentum distribution is consistent with the theoretical calculations.

关 键 词：二乙酰分子 内价轨道 电离能 电子动量谱 

分 类 号：O572.2[理学—粒子物理与原子核物理]