Transfer ionization of the isocharge sequence ion and Ar collisions

doi:10.1088/1009-1963/13/10/018

Abstract

Abstract The ratios of transfer ionization to single capture for isocharge C

^{q +}

, N

^{q +}

, O

^{q +}

, Ne

^{q +}

ions on Ar atoms are measured by using position-sensitive and time-of-flight techniques. It is found that the ratio

R_{1}

increases with nuclear charge

Z

in a

q = 4

sequence, and the ratio

R_{1}

sequences have the minimum values at

Z = 7

and

Z = 8

in

q = 5

and

q = 6

sequences, respectively, and the ratio

R_{1}

decreases with the increase in the nuclear charge

Z

in a

q = 7

sequence. The results may be explained within the frame of the statistical model. It may be concluded that the transfer ionization depends remarkably upon the electronic structure of the projectile. The projectiles used in this study have the same charge state and velocity, but different electronic structures. The dependence of the ratio

R_{1}

on q is studied for Ne

^{q +}

-Ar collisions. The ratio

R_{1}

is found to increase as q increases for Ne

^{q +}

－Ar collisions. The measured dependence of the ratio

R_{1}

on q is compared with the calculation using the molecular Coulomb over-barrier model.

Keywords: charge transfer transfer ionization

Received: 15 December 2003
Revised: 01 June 2004
Accepted manuscript online:

PACS:	34.50.Fa	(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
	34.70.+e	(Charge transfer)
	34.10.+x	(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10134010, 10375080 and 10304019).

Cite this article:

Cai Xiao-Hong (蔡晓红), Yu De-Yang (于得洋), Cao Zhu-Rong (曹柱荣), Lu Rong-Chun (卢荣春), Yang Wei (杨威), Shao Cao-Jie (邵曹杰), Chen Xi-Meng (陈熙萌) Transfer ionization of the isocharge sequence ion and Ar collisions 2004 Chinese Physics 13 1679

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