Kinetic energy release in fragmentation processes following electron emission: a time-dependent approach.

COLTRIMS Imaging of Molecular Fragmentation Dynamics of CO Molecules Induced by Slow He Ions

We study the multiple ionization and fragmentation of CO in collisions with slow He ions. Correlated measurements of all fragment ions and the projectile final charge state were performed using our coincidence COLTRIMS imaging technique coupled to projectile charge state separation. Complete fragmentations of CO, following double electron capture, into C+O with a total charge of 4 were investig...

Observing Femtosecond Fragmentation Using Ultrafast X-ray-Induced Auger Spectra

Molecules often fragment after photoionization in the gas phase. Usually, this process can only be investigated spectroscopically as long as there exists electron correlation between the photofragments. Important parameters, like their kinetic energy after separation, cannot be investigated. We are reporting on a femtosecond time-resolved Auger electron spectroscopy study concerning the photofr...

Correlation dynamics between electrons and ions in the fragmentation of D2 molecules by short laser pulses

We studied the recollision dynamics between the electrons and D2 1 ions following the tunneling ionization of D2 molecules in an intense short pulse laser field. The returning electron collisionally excites the D2 1 ion to excited electronic states; from there D2 1 can dissociate or be further ionized by the laser field, resulting in D1D or D1D, respectively. We modeled the fragmentation dynami...

Kinetic energy release in CO fragmentation by electron loss and capture collisions of fast B²⁺ ions

Anisotropic fragmentation in low-energy dissociative recombination

On a dense energy grid reaching up to 75 meV electron collision energy the fragmentation angle and the kinetic energy release of neutral dissociative recombination fragments have been studied in a twin merged beam experiment. The anisotropy described by Legendre polynomials and the extracted rotational state contributions were found to vary on a likewise narrow energy scale as the rotationally ...