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Momentum-imaging apparatus for the study of dissociative electron attachment dynamics
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View: Figures


Image of FIG. 1.
FIG. 1.

Cutaway visualization of the apparatus.

Image of FIG. 2.
FIG. 2.

Cutaway illustration of the spectrometer. A pulsed beam of electrons is crossed with a supersonic gas jet. Ionic fragments resulting from the interaction are subsequently extracted to the detector with a pulsed electric field in between electron bunches.

Image of FIG. 3.
FIG. 3.

Timing diagram for the acquisition system.

Image of FIG. 4.
FIG. 4.

Momentum density plots in the plane parallel to the incoming electron momentum and perpendicular to the gas jet. Four energies are shown for O production from O2. The electron beam points up vertically in all images.

Image of FIG. 5.
FIG. 5.

Kinetic energy yields of O ions from O2 at varying electron energies. The ion formation is strongest at around 6.5 eV.

Image of FIG. 6.
FIG. 6.

Angular distribution of O formation from dissociative attachment to O2. The initial electron momentum points along 0°.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Momentum-imaging apparatus for the study of dissociative electron attachment dynamics