Interference effects in double ionization of spatially aligned hydrogen molecules by fast highly charged ions
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
- Department of Physics, Augustana College, Sioux Falls, South Dakota, 57197 (United States)
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan Kansas 66506 (United States)
- 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, Vol. 70, Issue 4; Other Information: DOI: 10.1103/PhysRevA.70.042702; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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