High resolution angle-resolved measurements of Auger emission from the photo-excited 1s-13p state of Ne
High resolution angle-resolved measurements of Auger emission from the photo-excited 1s-13p state of Ne
复制标题
氖光激发 1s-13p 态俄歇发射的高分辨率角分辨测量
DOI：
10.1088/0953-4075/33/20/105
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
K. Ueda
中科院分区：
文献类型：
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作者：
Y. Shimizu;H. Yoshida;K. Okada;Y. Muramatsu;N. Saito;H. Ohashi;Y. Tamenori;S. Fritzsche;N. Kabachnik;Hiroshi Tanaka;K. Ueda
我们在1s→3p激发下，以867.12 eV的激发光子能量，测量了Ne原子在约810 eV的电子动能下的共振俄热电子发射，光子带通为60-68 meV，电子能量分辨率为13 meV，样品Ne原子热运动的多普勒宽度为79 meV。在此条件下，100-105 meV （FWHM）的总分辨率远小于Ne 1s空穴态的自然宽度250 meV，谐振俄歇末态2P -2(1D2)3p（或4p） 2P、2D、2F被完全（或部分）分辨。得到的β值和分支比与在两步模型框架内用多组态Dirac-Fock方法计算的第一性原理值吻合较好。
We present measurements of the resonant Auger electron emission at an electron kinetic energy of ~810 eV in the Ne atom following 1s → 3p excitation at an excitation photon energy of 867.12 eV, with a photon band pass of 60-68 meV, an electron energy resolution of 13 meV, and the Doppler width due to thermal motion of the sample Ne atoms of 79 meV. Under these conditions, the overall resolution of 100-105 meV (FWHM) is much smaller than the natural width, 250 meV, of the Ne 1s hole state, and the resonant Auger final states 2p-2(1D2)3p (or 4p) 2P, 2D, 2F are completely (or partially) resolved. The obtained β values and branching ratios are in good agreement with first principles calculations by means of the multi-configuration Dirac-Fock methods within the framework of the two-step model.