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

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.042702· OSTI ID:20646362

Landers, A L; Alnaser, A S; Tanis, J A ^[1]; Wells, E ^[2]; Osipov, T; Carnes, K D; Ben-Itzhak, I; Cocke, C L ^[3]; McGuire, J H ^[4]

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1. Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
2. Department of Physics, Augustana College, Sioux Falls, South Dakota, 57197 (United States)
3. J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan Kansas 66506 (United States)
4. Physics Department Tulane University, New Orleans, Louisiana, 70118 (United States)

Cross sections differential in target orientation angle were measured for 19 MeV F{sup 8+}+D{sub 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{sup +} 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 {approx_equal}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.

• OSTI ID: 20646362
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ASYMMETRY
CATIONS
CROSS SECTIONS
DEUTERIUM
DEUTERIUM IONS
FLUORINE IONS
HYDROGEN
INTERFERENCE
ION-MOLECULE COLLISIONS
IONIZATION
MEV RANGE
MOLECULES
MULTICHARGED IONS
ORIENTATION
POSITION SENSITIVE DETECTORS
SCATTERING
VECTORS