Interference effects in double ionization of spatially aligned hydrogen molecules by fast highly charged ions

被引：25

作者：

Landers, AL ^{[1
]}

Wells, E

Osipov, T

Carnes, KD

Alnaser, AS

Tanis, JA

McGuire, JH

Ben-Itzhak, I

Cocke, CL

机构：

[1] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA

[2] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

[3] Augustana Coll, Dept Phys, Sioux Falls, SD 57197 USA

[4] Kansas State Univ, Dept Phys, JR Macdonald Lab, Manhattan, KS 66506 USA

[5] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA

来源：

PHYSICAL REVIEW A | 2004年 / 70卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.70.042702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cross sections differential in target orientation angle were measured for 19 MeV F8+ + D-2 collisions. Multihit position-sensitive detectors were used to isolate the double-ionization channel and determine a posteriori the full momentum vectors of both ejected D+ fragments. A strong dependence of the double ionization cross section on the angle between the incident ion direction and the target molecular axis is observed with a approximate to 3.5: 1 enhancement for molecules aligned perpendicular to the projectile axis. This clear asymmetry is attributed to interference effects, analogous to Young's two-slit experiment, arising from coherent contributions to the ionization from both atomic centers. The data are compared to a simple scattering model based on two center interference.

引用

页码：042702 / 1

页数：5

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