Multi-Electron Processes in <sup>13</sup>C<sup>6+</sup> Ions with Neon Collisions in Energy Region 4.15--11.08keV/u

Chin. Phys. Lett.

2006, Vol. 23

Issue (1): 95-98 DOI:

Original Articles

Multi-Electron Processes in ¹³C⁶⁺ Ions with Neon Collisions in Energy Region 4.15--11.08keV/u

RUAN Fang-Fang^1,3;CAI Xiao-Hong¹;YU De-Yang¹;LU Rong-Chun^1,3;SHAO Cao-Jie¹;LU Jun¹;CUI Ying²;SHAO Jian-Xiong²;XU Xu²;ZHANG Hong-Qiang²;DING Bao-Wei²;YANG Zhi-Hu¹;CHEN Xi-Meng²

¹Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 ²Department of Modern Physics, Lanzhou University, Lanzhou 730000 ³Graduate School of the Chinese Academy of Sciences, Beijing 100049

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RUAN Fang-Fang, CAI Xiao-Hong, YU De-Yang et al 2006 Chin. Phys. Lett. 23 95-98

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Abstract The cross-section ratios of double-, triple-, quadruple-, and the total multi-electron processes to the single electron capture process (σ^DE/σ^SC, σ^TE/σ^SC, σ^QE/σ^SC and σ^ME/σ^SC as well as the relative ratios among reaction channels in double-electron active, triple-electron active and quadruple-electron active are measured in ¹³C⁶⁺--Ne collision in the energy region of 4.15--11.08keV/u by employing position-sensitive and time-of-flight coincident techniques. It is determined that the cross-section ratios σ^DE/σ^SC, σ^TE/σ^SC, σ^QE/σ^SC and σ^ME/σ^SC are approximately the constants of 0.20±0.03, 0.16±0.04, 0.06±0.02 and 0.42±0.05. These values are obviously smaller than the predictions of the molecular Coulomb over-the-barrier model (MCBM) [J. Phys. B 23 (1990) 4293], the extended classical over-the-barrier model (ECBM) [J. Phys. B 19 (1986) 2925] and the semiempirical scaling laws (SL) [Phys. Rev. A 54 (1996) 4127]. However, the relative ratios among partial processes of DE, TE and QE are found to depend on collision energy, which suggests that the collision dynamics depends on the collision velocity. The limitation of velocity-independent character of ECBM, MCBM and SL is undoubtedly shown.

Keywords: 34.70.+e 82.30.Fi

Published: 01 January 2006

PACS:	34.70.+e	(Charge transfer)
	82.30.Fi	(Ion-molecule, ion-ion, and charge-transfer reactions)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I1/095

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	RUAN Fang-Fang
	CAI Xiao-Hong
	YU De-Yang
	LU Rong-Chun
	SHAO Cao-Jie
	LU Jun
	CUI Ying
	SHAO Jian-Xiong
	XU Xu
	ZHANG Hong-Qiang
	DING Bao-Wei
	YANG Zhi-Hu
	CHEN Xi-Meng

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