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electron impact desorption(EID) [化] 电子碰撞解吸
electron impact desorption 电子碰撞解吸
The electron impact mass spectral fragmentations of Hainansensine analogs werereported. 本文对17个海南新碱类似物的电子轰击质谱裂解机理进行了探讨。
By using a distorted-wave Born exchange approximation, the direct ionizarion cross section of boron-like ions by electron impact have been calculated. 运用扭曲波玻恩交换近似对处于Hartree-Fock基态的类硼离子的电子碰撞直接电离截面进行了计算。
Abstract : The electron impact mass spectra of ten new C2-symmetric chiral bis(oxazoline) and bis(thiazoline) have been studied. 摘要：本文研究了十个新的C2对称的手性双恶唑啉和双噻唑啉等两个系列的电子轰击质谱。
A new electron impact storage ion source has been designed for time of flight mass spectrometers with a high mass resolving power and high sensitivity. 电子轰击存贮型脉冲离子源是为高分辨率、高灵敏度飞行时间质谱仪设计的新型离子源。
On one hand, many C,N-containingneutral species such as C2N2, CH3CN, HC3N, CCN, etc. can effectively produce the C2N+ ion upon electron impact and radiation. 一方面，很多含有C,N原子的中性分子如C2N2、CH3CN、HC3N、CCN等经电子撞击电离或辐射后能很有效的电离出C2N+离子；
On one hand, many C,N-containing neutral species such as C2N2, CH3CN, HC3N, CCN, etc. can effectively produce the C2N+ ion upon electron impact and radiation. 一方面，很多含有C,N原子的中性分子如C2N2、CH3CN、HC3N、CCN等经电子撞击电离或辐射后能很有效的电离出C2N+离子；
Drop of differential resistance results from the effect of photocurrent multiplication,which is due to the electron impact ionization when photocurrent-generation proliferates. 关键词光电倍增；
The study of atomic inner-shell ionization cross-sections by low-energy electron impact is significant in both theoretical researches and practical applications. 低能电子碰撞原子内壳层电离截面测量的研究在理论和实际应用方面都具有重要意义。
Other electron diffraction and scattering techniques(e. Gelectron impact desorption and spin-polaised electron techniques) 衍射和散射实验其它电子衍射和散射技术(例如,电子碰撞解吸技术和自旋极化电子技术)
The cross section of inner-shell excitation followed by auto-ionization and total ionization cross section of lithium-like ions by electron impact have been calculated by using a distorted wave Born exchange approximation. 利用扭曲波玻恩交换近似,计算了类锂离子的电子碰撞激发-自电离截面和总电离截面,与紧耦合计算及实验数据比较,得到了比较令人满意的结果。
The differential cross sections of ( e,2e ) reaction for electron impact lithium atom have been calculated with distorted wave Born approximation(DWBA) method at incident energy 400 eV and 200 eV. We also study the influence of distorting potentials. 采用畸变波玻恩近似 (DWBA)方法 ,计算了入射能量为 4 0 0eV和 2 0 0eV的电子碰撞锂原子 (e,2e)反应在非共面对称几何条件下的三重微分截面 (TDCS) ,并研究了极化势对TDCS的影响。
In this paper, By using R matrix method the electron impact ionization cross sections of atom Mg from near the threshold to 100eV have been calculated in the distorted Coulomb Born no exchange approximation. 使用R－矩阵方法，在扭曲库仑－玻恩非交换近似下（DCBNX）采用二态密耦图象，计算了原子镁从电离阈值附近到100eV范围的电子碰撞电离截面。
In this paper, a fivefold differential cross section(FDCS) for electron impact double ionization of helium is calculated in the case of high incident energy(E 05.6 keV) and low ejection energies(E 1=E 2=10 eV). 完成了高入射能 (E0 5 .;6keV);低敲出能 (E1=E2 =10eV)情形下;电子入射双电离He原子五重微分截面 (FDCS)的理论计算。
By using R matrix method total and single differential Cross sections for electron impact ionisation of atom Na at 20,50,and 100 eV incident energies in the distorted wave and the Coulomb Born approximations. 使用R?矩阵方法，在扭曲波和库仑?玻恩近似下计算了入射电子能量为20 eV、50eV 及100 eV 原子Na 的电子碰撞电离截面，并详细给出了入射电子能量为50 eV 时的能量微分截面及分波能量微分截面。
Comparative analyses show that the electron impact excitated to repulsive state will play a dominant role in the process, the cross section of which is about one order of magnitude larger than others. 通过比较表明到排斥态的激发然后发生解离反应的反应截面占据主导地位，比激发到其它三重态激发然后发生解离的反应截面要大一个量级。
These bullets fragment on impact. 这些子弹射中物体时爆炸成碎片。
Her speech made a tremendous impact on everyone. 她的演说对大家震动很大。
The transmitter was pulsed by an electron tube. 电子管使发射器产生脉冲波。

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