MECHANISM OF TRUE DOUBLE ELECTRON-CAPTURE BY MULTIPLY CHARGED IONS

被引：55

作者：

RONCIN, P ^{[1
]}

GABORIAUD, MN ^{[1
]}

BARAT, M ^{[1
]}

机构：

[1] CNRS,CEA,LAGRIPPA FACIL,F-38042 GRENOBLE,FRANCE

来源：

EUROPHYSICS LETTERS | 1991年 / 16卷 / 06期

关键词：

CHARGE TRANSFER;

D O I：

10.1209/0295-5075/16/6/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Differential cross-sections are measured for autoionising double capture (ADC) and true double electron capture (TDC) in collision of multiply charged ions with rare-gas targets. Angular profiles and energy gain spectra are identical for both processes suggesting a similar primary mechanism. ADC is well understood in the framework of the independent electron model. To populate TDC a secondary mechanism is suggested which involves electron-electron interaction and feeds very asymmetrical nonautoionising configurations from the quasi-symmetrical one initially populated.

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页码：551 / 556

页数：6

相关论文

共 13 条

[1] COINCIDENT ENERGY GAIN SPECTROSCOPY OF ELECTRON-CAPTURE IN MULTIPLY CHARGED IONS COLLIDING WITH HE, H2 AND HEAVY RARE-GAS TARGETS [J].

BARAT, M ;

GABORIAUD, MN ;

GUILLEMOT, L ;

RONCIN, P ;

LAURENT, H ;

ANDRIAMONJE, S .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (21) :5771-5783

[2] EXPERIMENTAL AND MODEL ANGULAR-DISTRIBUTIONS OF ONE-ELECTRON AND 2-ELECTRON CAPTURE PROCESSES IN 0.5-20 EV U AR4+-AR COLLISIONS [J].

BIEDERMANN, C ;

CEDERQUIST, H ;

ANDERSSON, LR ;

LEVIN, JC ;

SHORT, RT ;

ELSTON, SB ;

GIBBONS, JP ;

ANDERSSON, H ;

LILJEBY, L ;

SELLIN, IA .

PHYSICAL REVIEW A, 1990, 41 (11) :5889-5908

[3] ANGULAR DIFFERENTIAL CROSS-SECTIONS FOR HIGH-CHARGE LOW-ENERGY AR COLLIDING WITH AR [J].

DANARED, H ;

ANDERSSON, H ;

ASTNER, G ;

BARANY, A ;

DEFRANCE, P ;

RACHAFI, S .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (05) :L165-L170

[4] CRITICAL-STUDY OF THE MOLECULAR COULOMBIC BARRIER MODEL FOR MULTIPLE ELECTRON-CAPTURE BY HIGHLY CHARGED IONS [J].

GUILLEMOT, L ;

RONCIN, P ;

GABORIAUD, MN ;

LAURENT, H ;

BARAT, M .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1990, 23 (23) :4293-4312

[5] CALCULATIONS OF RADIATIVE AND NON-RADIATIVE DECAY-RATES FOR DOUBLY-EXCITED STATES IN HIGHLY IONIZED AR [J].

HANSEN, JE .

JOURNAL DE PHYSIQUE, 1989, 50 (C-1) :603-607

[6] AUTOIONIZING DOUBLE CAPTURE IN N-7+ ON HELIUM COLLISIONS AT LOW ENERGIES [J].

HAREL, C ;

JOUIN, H .

EUROPHYSICS LETTERS, 1990, 11 (02) :121-126

[7] RADIATIVE AND NONRADIATIVE DECAYS OF DOUBLY-EXCITED CONFIGURATIONS IN THE AR-7+ SPECTRUM [J].

LUCKOENIG, E ;

BAUCHE, J .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1990, 23 (11) :1763-1782

[8] MULTIELECTRON CAPTURE IN KR-18+ COLLISIONS WITH KR AND AR AT LOW ENERGIES BY RYDBERG TRANSITION SPECTROSCOPY [J].

MARTIN, S ;

DENIS, A ;

OUERDANE, Y ;

SALMOUN, A ;

ELMOTASSADEQ, A ;

DESESQUELLES, J ;

DRUETTA, M ;

CHURCH, D ;

LAMY, T .

PHYSICAL REVIEW LETTERS, 1990, 64 (22) :2633-2636

[9]

MARTIN S, IN PRESS COMMUNICATI

[10] A CLASSICAL-MODEL FOR MULTIPLE-ELECTRON CAPTURE IN SLOW COLLISIONS OF HIGHLY CHARGED IONS WITH ATOMS [J].

NIEHAUS, A .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1986, 19 (18) :2925-2937