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Cross sections of Oq+(q=1 - 4) electron loss in collisions with He, Ne and Ar |
| Lu Yan-Xia(鲁彦霞)†, Lu Xing-Qiang(路兴强), Song Xiang(宋想), and Zhang Bo-Li(张泊丽) |
| School of Nuclear Science and Technology, University of South China, Hengyang 421001, China |
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Abstract Electron-loss cross sections of Oq+ (q=1-4) colliding with He, Ne and Ar atoms are measured in the intermediate velocity regime. The ratios of the cross sections of two-electron loss to that of one-electron loss R21 are presented. It is shown that single-channel analysis is not sufficient to explain the results, but that projectile electron loss, electron capture by the projectile and target ionization must be considered together to interpret the experimental data. The screening and antiscreening effects can account for the threshold velocity results, but cannot explain the dependence of the ratio R21 on velocity quantitatively. In general, the effective charge of the target atom increases with velocity increasing because the high-speed projectile ion can penetrate into the inner electronic shell of target atom. Ne and Ar atoms have similar effective charges in this velocity regime, but He atoms have smaller ones at the same velocities due to its smaller nuclear charge.
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Received: 21 April 2010
Revised: 21 July 2010
Accepted manuscript online:
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PACS:
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34.50.Fa
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(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
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52.20.Hv
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(Atomic, molecular, ion, and heavy-particle collisions)
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| Fund: Project supported by the Special Foundation for Key Programs of Basic Research at its earlier stage, Ministry of Science and Technology, China(Grant No. 2002CCA00900) and by the Foundation for the Doctors of University of South China (Grant No. 5-2007-XQD-001). |
Cite this article:
Lu Yan-Xia(鲁彦霞), Lu Xing-Qiang(路兴强), Song Xiang(宋想), and Zhang Bo-Li(张泊丽) Cross sections of Oq+(q=1 - 4) electron loss in collisions with He, Ne and Ar 2011 Chin. Phys. B 20 033402
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| [1] |
Lu Y X, Chen X M, Ding B W, Fu H B, Cui Y, Shao J X, Zhang H Q and Gao Z M 2007 Acta Phys. Sin. 56 4461 (in Chinese)
|
| [2] |
Chen X M, Lu Y X, Ding B W, Liu Y W, Cui Y, Gao Z M, Fu H B, Du J and Shao J X 2007 Chin. Phys. 16 2384
|
| [3] |
Chen X M, Lu Y X, Gao Z M, Cui Y, Liu Y W and Du J 2007 Nucl. Instr. and Meth. B 262 161
|
| [4] |
Lu Y X, Xiao D T, Yu T, Liu L J, Chen X M, Cui Y and Shao J X 2009 Nucl. Instr. and Meth. B 267 474
|
| [5] |
Sattin F 2001 Phys. Rev. A 64 034704
|
| [6] |
Matveev V I, Ryabchenko S V, Matrasulov D U, Rakhimov K Y, Fritzsche S and St"ohlker T 2009 Phys. Rev. A 79 042710
|
| [7] |
Wolff W, Luna H, Santos A C F, Montenegro E C and Sigaud G M 2009 Phys. Rev. A 80 032703
|
| [8] |
Montenegro E C, Sigaud G M and Meyerhof W E 1992 Phys. Rev. A 45 1575
|
| [9] |
Montenegro E C, Meyerhof W E and McGuire J H 1994 Adv. At. Mol. Opt. Phys. 34 249
|
| [10] |
McGuire J H, Stolterfoht N and Simony P R 1981 Phys. Rev. A 24 97
|
| [11] |
Senger B, Wittendorp R E and Rechenmann R V 1982 Nucl. Instr. and Meth. B 194 437
|
| [12] |
Sant'Anna M M, Melo W S, Santos A C F, Sigaud G M and Montenegro E C 1995 Nucl. Instr. and Meth. B 99 46
|
| [13] |
Sigaud G M, Jora's F S, Santos A C F, Montenegro E C, Sant'Anna M M and Melo W S 1997 Nucl. Instr. and Meth. B 132 312
|
| [14] |
Brendle' B, Gayet R, Rozet J P and Wohrer K 1985 Phys. Rev. Lett. 54 2007
|
| [15] |
Wohrer K, Chetioui A, Rozet J P, Jolly A, Fernandez F, Stephan C, Brendle' B and Gayet R 1986 J. Phys. B 19 1997
|
| [16] |
Xu X Y, Montenegro E C, Anholt R, Danzmann K, Meyerhof W E, Schlachter A S, Rude B S and McDonald R J 1988 Phys. Rev. A 38 1848
|
| [17] |
Chung H K, Lee R W and Chen M H 2007 High Energy Density Physics 3 342
|
| [18] |
Chabot M, Wohrer K, Chetioui A, Rozet J P, Touati A, Vernhet D, Politis M F, Stephan C, Grandin J P, Macias A, Martin F, Riera A, Sanz J L and Gayet R 1994 J. Phys. B 27 111
|
| [19] |
Walters H R J 1975 J. Phys. B 8 54
|
| [20] |
Woitke O, Za'vodszky P A, Ferguson S M, Houck J H and Tanis J A 1998 Phys. Rev. A 57 2692
|
| [21] |
Grande P L, Schiwietz G, Sigaud G M and Montenegro E C 1996 Phys. Rev. A 54 2983
|
| [22] |
McGuire J H 1987 Phys. Rev. A 36 1114
|
| [23] |
Santos A C F, Melo W S, Sant'Anna M M, Sigaud G M and Montenegro E C 2001 Phys. Rev. A 63 062717
|
| [24] |
Liu J B, Wang Y and Zhou Y J 2007 Chin. Phys. 16 0072
|
| [25] |
Shi D H, Sun J F, Zhu Z L, Ma H, Liu Y F and Yang X D 2007 Chin. Phys. 16 1655
|
| [26] |
Yu C R 2008 Chin. Phys. B 17 2097
|
| [27] |
Chi B Q, Liu L and Wang J G 2008 Chin. Phys. B 17 2890
|
| [28] |
Zhu X L Ma X W Li B Feng W T Zhang S F Liu H P Qian D B and Zhang D C 2010 Acta Phys. Sin 59 0620 (in Chinese) endfootnotesize
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