Influence of long-range Coulomb interaction in velocity map imaging. Barillot, T., Brédy, R., Celep, G., Cohen, S., Compagnon, I., Concina, B., Constant, E., Danakas, S., Kalaitzis, P., Karras, G., Lépine, F., Loriot, V., Marciniak, A., Predelus-Renois, G., Schindler, B., & Bordas, C. The Journal of Chemical Physics, 147(1):013929, July, 2017. Publisher: AIP Publishing LLC
Influence of long-range Coulomb interaction in velocity map imaging [link]Paper  doi  abstract   bibtex   
The standard velocity-map imaging (VMI) analysis relies on the simple approximation that the residual Coulomb field experienced by the photoelectron ejected from a neutral or ion system may be neglected. Under this almost universal approximation, the photoelectrons follow ballistic (parabolic) trajectories in the externally applied electric field, and the recorded image may be considered as a 2D projection of the initial photoelectron velocity distribution. There are, however, several circumstances where this approximation is not justified and the influence of long-range forces must absolutely be taken into account for the interpretation and analysis of the recorded images. The aim of this paper is to illustrate this influence by discussing two different situations involving isolated atoms or molecules where the analysis of experimental images cannot be performed without considering long-range Coulomb interactions. The first situation occurs when slow (meV) photoelectrons are photoionized from a neutral s...
@article{barillot_influence_2017,
	title = {Influence of long-range {Coulomb} interaction in velocity map imaging},
	volume = {147},
	issn = {0021-9606},
	url = {http://aip.scitation.org/doi/10.1063/1.4982616},
	doi = {10.1063/1.4982616},
	abstract = {The standard velocity-map imaging (VMI) analysis relies on the simple approximation that the residual Coulomb field experienced by the photoelectron ejected from a neutral or ion system may be neglected. Under this almost universal approximation, the photoelectrons follow ballistic (parabolic) trajectories in the externally applied electric field, and the recorded image may be considered as a 2D projection of the initial photoelectron velocity distribution. There are, however, several circumstances where this approximation is not justified and the influence of long-range forces must absolutely be taken into account for the interpretation and analysis of the recorded images. The aim of this paper is to illustrate this influence by discussing two different situations involving isolated atoms or molecules where the analysis of experimental images cannot be performed without considering long-range Coulomb interactions. The first situation occurs when slow (meV) photoelectrons are photoionized from a neutral s...},
	number = {1},
	urldate = {2017-05-09},
	journal = {The Journal of Chemical Physics},
	author = {Barillot, T. and Brédy, R. and Celep, G. and Cohen, S. and Compagnon, I. and Concina, B. and Constant, E. and Danakas, S. and Kalaitzis, P. and Karras, G. and Lépine, F. and Loriot, V. and Marciniak, A. and Predelus-Renois, G. and Schindler, B. and Bordas, C.},
	month = jul,
	year = {2017},
	note = {Publisher: AIP Publishing LLC},
	keywords = {\#nosource, atom-photon collisions, electron detachment, photoionisation},
	pages = {013929},
}

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