EXCITATION IONIZATION AND DOUBLE-IONIZATION OF HELIUM BY HIGH-ENERGY PHOTON IMPACT

被引：104

作者：

ANDERSSON, LR ^{[1
]}

BURGDORFER, J ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.71.50

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ratio of double to single ionization by photoabsorption is calculated for photon impact energies in the range 2-18 keV. Employing the acceleration form of the dipole operator and representing the electron-electron correlation in the final state by a Coulomb distortion factor, R=sigma++/sigma+ approaches an asymptotic value of 1.66% and reaches a value of about 2.5% at 2 keV photon energy. Comparison with experimental data shows good agreement when contributions due to Compton scattering are taken into account.

引用

页码：50 / 53

页数：4

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