THRESHOLD BEHAVIOR IN SINGLE-PHOTON DOUBLE-IONIZATION OF ATOMIC OXYGEN

被引：9

作者：

HE, ZX ^{[1
]}

MOBERG, R ^{[1
]}

SAMSON, JAR ^{[1
]}

机构：

[1] UNIV UPPSALA, DEPT PHYS, S-75121 UPPSALA, SWEDEN

来源：

PHYSICAL REVIEW A | 1995年 / 52卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.52.4595

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The threshold behavior of the single-photon double-ionization cross section of atomic oxygen has been studied using vacuum uv radiation from a synchrotron storage ring. The double-ionization cross section appears to follow a power law E(alpha) (where E is the kinetic energy of the two electrons) from its threshold to about 2.0 eV above with an exponent alpha = 1.08+/-0.03, which is consistent with Wannier's theoretical value of 1.056. The cross section also shows the influence of the doubly excited 2s2p(3)nln'l' (n,n' > 3) neutral states, among which the first three converge to the 2s2p(3)(S-5(o))4p(P-6(o)) ionic state of oxygen.

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页码：4595 / 4598

页数：4

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