Theoretical study of molecular-frame angular emission distributions of electrons emitted by interatomic Coulombic decay from helium dimers

Interatomic and Intermolecular Coulombic Decay

“…MFADs of ICD electrons were studied experimentally and theoretically, for example, for Ne dimers, 58 , 192 , 298 , 304 HeNe, 107 and helium dimers. 188 , 321 …”

“… 188 This strong dependence of the MFADs was qualitatively explained by a strongly simplified model, which implied a coherent superposition of two spherical electron waves emitted from two helium atoms and accounts for the symmetry of the electronic states involved in the transition. Subsequent ab initio calculations of these ICD electron MFADs 321 relate the observed variations to electronic properties of the process. In ref ( 107 ), angle resolved RICD spectra of HeNe were studied experimentally and theoretically.…”

Three-electron dynamics of the interparticle Coulombic decay with two-dimensional continuum confinement

“…For more than two decades the interparticle Coulombic decay (ICD) process created a stir. [1][2][3][4][5][6][7] Theoreticians and experimentalist from disciplines ranging from atomic cluster physics [8][9][10][11][12][13][14][15][16][17] over biomedicine 18,19 to nanophysics [20][21][22] traced ICD and found it being effective in the various systems. This general presence originates probably from the astonishing simplicity of the process.…”

“…one would know which Coulomb explosion products are collected in ion and electron detectors and what energy those have and reconstruct from this the progression of ICD. 8,9,17 Or one would record photoelectron spectra. [23][24][25] A recent alternative are pump-probe techniques.…”

Influence of nuclear motion on resonant two-center photoionization

“…Of particular interest is the influence of the latter on the total cross section of 2CPI and its relative strength in comparison with the direct photoionization. It is worth mentioning that angular distributions of electrons emitted via 2CPI from He-Ne dimers have been calculated in [19], including their vibrational level structure (for a similar consideration of ICD in He 2 , see [21]). Besides, we note that 2CPI has recently been studied in slow atomic collisions where the internuclear distance is not fixed either but subject to the relative atomic motion which was assumed to follow a straight-line trajectory [22].…”