The collisional shift of a transition constitutes an important systematic effect in high-precision spectroscopy.
Ulrich D. Jentschura, Chandra M. Adhikari 2017, 'Long-Range Interactions for Hydrogen: 6P–1S and 6P–2S Systems', Atomshttps://www.mdpi.com/2218-2004/5/4/48. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The results of our recent collisional calculations are summarized.
Wiesenfeld L., Faure A., Cressiot-Vincent L., Dayou F., Spielfiedel A., Balança C.,Feautrier N., Senent M.-L. 2012, 'Rotational excitation of SO2 by collision with H2: a collaborative work', EPJ Web of Conferenceshttp://dx.doi.org/10.1051/epjconf/20123403003. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This requires the knowledge of numerous collisional line profiles.
Sylvie Sahal-Bréchot, Milan S. Dimitrijević, Nabil Ben Nessib 2014, 'Widths and Shifts of Isolated Lines of Neutral and Ionized Atoms Perturbed by CollisionsWith Electrons and Ions: An Outline of the Semiclassical Perturbation (SCP) Methodand of the Approximations Used for the Calculations', Atomshttp://www.mdpi.com/2218-2004/2/2/225. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These conditions are referred to as moderately collisional.
Stober J., Sommer F., Angioni C., Bock A., Fable E., Leuterer F., Monaco F., MüllerF., Münich S., Petzold B., Poli E., Schubert M., Schütz H., Wagner D., Zohm H., KasparekW., Plaum B., Meier A., Scherer Th., Strauß D., Jelonnek J., Thumm M., Litvak A.,Denisov G.G., Chirkov A.V., Tai E.M., Popov L.G., Nichiporenko V.O., Myasnikov V.E.,Soluyanova E.A., Malygin V. 2015, 'High power ECRH and ECCD in moderately collisional ASDEX Upgrade Hmodes and statusof EC system upgrade', EPJ Web of Conferenceshttp://dx.doi.org/10.1051/epjconf/20158702004. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We discuss bilocal collisional invariants, from which we deduce the two-particle stationary distribution.
Gregor Chliamovitch, Orestis Malaspinas, Bastien Chopard 2017, 'Kinetic Theory beyond the Stosszahlansatz', Entropyhttps://www.mdpi.com/1099-4300/19/8/381. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These results may be explained by the collisional deactivations of photoexcited molecules.
Geert K. Moortgat, Ivan Juranić, Jovan Tadić 2001, 'Photooxidation of n-Hexanal in Air', Moleculeshttp://www.mdpi.com/1420-3049/6/4/287/. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We identify several collisional processes that occur on different time scales.
Ulrich Ebling, Jasper Simon Krauser, Nick Fläschner, Klaus Sengstock, Christoph Becker,Maciej Lewenstein, André Eckardt 2014, 'Relaxation Dynamics of an Isolated Large-Spin Fermi Gas Far from Equilibrium', Physical Review Xhttp://doi.org/10.1103/PhysRevX.4.021011. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Theory predicted that a multiple-mirror magnetic field should not significantly decelerate and weaken collisional plasma.
I. A. Ivanov, V. I. Batkin, A. V. Burdakov, V. S. Burmasov, K. N. Kuklin, K. I. Mekler,S. V. Polosatkin, V. V. Postupaev, E. N. Sidorov, A. F. Rovenskikh 2017, 'Transportation of cold plasma jet in multiple-mirror magnetic field', AIP Advanceshttp://dx.doi.org/10.1063/1.5009528. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)