Near-site far-site charge asymmetry in diatomic Coulomb fragmentation with slow highly charged ions

被引：4

作者：

Ohyama-Yamaguchi, T

Ichimura, A

机构：

[1] Tokyo Metropolitan Coll Technol, Shinagawa Ku, Tokyo 1400011, Japan

[2] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2005年 / 235卷

关键词：

highly charged ion; multiple electron transfer; charge asymmetric Coulomb fragmentation; three-center Coulombic over-barrier model;

D O I：

10.1016/j.nimb.2005.03.210

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The three-center Coulombic over-barrier model is developed for charge asymmetric Coulomb fragmentations of a diatomic molecule following multiple electron transfer to a slow highly charged ion. The near-site far-site asymmetry is calculated in a coplanar geometry through a ratio of phase space volumes at the nuclear configuration where the electron gets localized in the dissociating molecular ion. The model explains the experimental observation in collisions of Kr8+ + N-2 that the fragment pair of N3+N+ shows considerably larger asymmetry than N2+N+ and N3+N2+ (c) 2005 Elsevier B.V. All rights reserved.

引用

收藏

页码：382 / 386

页数：5

相关论文

共 13 条

[1] Fast ion-induced CO molecule fragmentation in the strong interaction regime [J].

Adoui, L ;

Caraby, C ;

Cassimi, A ;

Lelièvre, D ;

Grandin, JP ;

Dubois, A .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1999, 32 (03) :631-647

[2] Dynamics of the fragmentation of D2 by fast protons and slow highly charged Xe26+ -: art. no. 022712 [J].

Ali, I ;

DuBois, RD ;

Cocke, CL ;

Hagmann, S ;

Feeler, CR ;

Olson, RE .

PHYSICAL REVIEW A, 2001, 64 (02) :10

[3] Simultaneous charge polarization and fragmentation of N2 molecules in slow keV collisions with Kr8+ ions -: art. no. 030702 [J].

Ehrich, M ;

Werner, U ;

Lutz, HO ;

Kaneyasu, T ;

Ishii, K ;

Okuno, K ;

Saalmann, U .

PHYSICAL REVIEW A, 2002, 65 (03) :4

[4] Dissociation of CO induced by He2+ ions:: II.: Dissociation pathways and states [J].

Folkerts, HO ;

Schlatholter, T ;

Hoekstra, R ;

Morgenstern, R .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1997, 30 (24) :5849-5860

[5] Dissociation of CO induced by He2+ ions:: I.: Fragmentation and kinetic energy release spectra [J].

Folkerts, HO ;

Bliek, FW ;

de Jong, MC ;

Hoekstra, R ;

Morgenstern, R .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1997, 30 (24) :5833-5847

[6] Three-center Coulombic over-barrier model for multiple electron capture by slow highly charged ions from diatomic molecules [J].

Ichimura, A ;

Ohyama-Yamaguchi, T .

PHYSICA SCRIPTA, 1999, T80B :190-192

[7] Orientation dependence for multiple electron transfer from homonuclear diatomic molecules in collisions with slow highly charged ions [J].

Ichimura, A ;

Ohyama-Yamaguchi, T .

PHYSICA SCRIPTA, 2001, T92 :162-164

[8] State-selective scattering angular dependent fragmentation of N2 by slow Kr8+ ion impact [J].

Kaneyasu, T ;

Azuma, T ;

Ehrich, M ;

Yoshino, M ;

Okuno, K .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 205 :624-628

[9]

KANEYASU T, COMMUNICATION

[10] Orientation dependence of multiple electron transfer in collisions of slow highly charged ions with rare gas dimers [J].

Ohyama-Yamaguchi, T ;

Ichimura, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 205 :620-623