Transfer ionization in fast p-He collisions

被引：0

作者：

Schmidt, HT ^{[1
]}

Cederquist, H ^{[1
]}

Fardi, A ^{[1
]}

Schuch, R ^{[1
]}

Zettergren, H ^{[1
]}

Bagge, L ^{[1
]}

Källberg, A ^{[1
]}

Jensen, J ^{[1
]}

Rensfelt, KG ^{[1
]}

Mergel, V ^{[1
]}

Schmidt, L ^{[1
]}

Schmidt-Böcking, H ^{[1
]}

Cocke, CL ^{[1
]}

机构：

[1] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden

来源：

PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS | 2002年

关键词：

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We separate the kinematical (KTI) and Thomas transfer ionization processes in 2.5-4.5 MeV proton-He collisions by means of a switching recoil-ion momentum spectrometer at the gas-jet target in the ion storage and cooler ring CRYRING. The ratio sigma(kappaPi)/(sigma(SC)+sigma(Pi)), where sigma(Pi) and sigma(SC) are the total transfer ionization and single-electron capture cross sections, respectively, decreases with the velocity for v>10 v(o) (the Bohr velocity) and appears to approach the same asymptotic limit as the double-to-single ionization ratio in (non-Compton) photoionization (1.66%). For these velocities the Thomas TI cross section scales as v(-11) as predicted by theory(23).

引用

页码：720 / 723

页数：4

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