A COINCIDENCE STUDY OF MULTIPLE-ELECTRON CAPTURE IN N-15(7+)-AR COLLISIONS

被引：23

作者：

DENIJS, G

HOEKSTRA, R

MORGENSTERN, R

机构：

[1] KVI, Groningen, Netherlands

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1994年 / 27卷 / 12期

关键词：

D O I：

10.1088/0953-4075/27/12/014

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present energy spectra of autoionization electrons resulting from collisions between fully stripped N-15(7+) ions and Ar in the energy range of 1-10 keV amu-1. These spectra have been measured in coincidence with charge-state analysed Ar ions. Observed populations of the various configurations are discussed in the framework of the classical overbarrier model. Our measurements suggest that target-ion excitation together with two-electron capture is an important process in collisions between bare N7+ ions and Ar. We find evidence that radiative stabilization of doubly excited N5+(4l, 4l') states is even stronger than was thought up to now.

引用

收藏

页码：2557 / 2567

页数：11

相关论文

共 26 条

[1] ON THE RADIATIVE STABILIZATION IN SLOW DOUBLE-ELECTRON CAPTURE COLLISIONS OF HIGHLY CHARGED IONS WITH NEUTRAL ATOMS [J].

ALI, R ;

COCKE, CL ;

RAPHAELIAN, MLA ;

STOCKLI, M .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1993, 26 (07) :L177-L184

[2] STABILIZATION OF AUTOIONIZING STATES DURING ION ATOM COLLISIONS [J].

BACHAU, H ;

RONCIN, P ;

HAREL, C .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1992, 25 (04) :L109-L115

[3] MULTIPLE CAPTURE IN N-7++AR INVESTIGATED BY ELECTRON-SPECTROSCOPY (70 KEV, THETA-LAB = 10-DEGREES) [J].

BENOITCATTIN, P ;

BORDENAVEMONTESQUIEU, A ;

BOUDJEMA, M ;

GLEIZES, A ;

DOUSSON, S ;

HITZ, D .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (20) :3387-3416

[4] ANGULAR MOMENTA DETERMINATION OF N5+(3L3L') CAPTURE STATES IN N7+-HE COLLISIONS [J].

BORDENAVEMONTESQUIEU, A ;

BENOITCATTIN, P ;

BOUDJEMA, M ;

GLEIZES, A ;

BACHAU, H .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (21) :L695-L703

[5] INCREASE OF TRUE DOUBLE-ELECTRON-CAPTURE CROSS-SECTIONS IN SLOW XE-Q+ -(XE,HE) COLLISIONS AT VERY HIGH-Q [J].

CEDERQUIST, H ;

ANDERSSON, H ;

BEEBE, E ;

BIEDERMANN, C ;

BROSTROM, L ;

ENGSTROM, A ;

GAO, H ;

HUTTON, R ;

LEVIN, JC ;

LILJEBY, L ;

PAJEK, M ;

QUINTEROS, T ;

SELBERG, N ;

SIGRAY, P .

PHYSICAL REVIEW A, 1992, 46 (05) :2592-2595

[6] FLUORESCENCE YIELDS OF HIGH-LYING DOUBLY EXCITED-STATES OF AR-16+ [J].

CHEN, Z ;

LIN, CD .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1993, 26 (05) :957-963

[7]

Cowan R.D., 1981, THEORY ATOMIC STRUCT

[8]

GELLER G, 1982, NUCL INSTRUM METHODS, V202, P299

[9] SIMULTANEOUS ELECTRON-CAPTURE AND TARGET ION EXCITATION IN COLLISIONS OF C4+ AND N5+ ON HE [J].

HOEKSTRA, R ;

BEIJERS, JPM ;

DEHEER, FJ ;

MORGENSTERN, R .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1993, 25 (03) :209-215

[10] RADIATIVE AND AUGER DECAY CHANNELS IN K-SHELL EXCITED LI-LIKE IONS (Z=6-8) [J].

MACK, M ;

NIEHAUS, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 23 (1-2) :109-115