Track creation after swift heavy ion irradiation of insulators

Kinetics of propagation of the lattice excitation in a swift heavy ion track

“…The importance of the excess energy accumulated in valence holes for the relaxation kinetics in SHI tracks was demonstrated very recently in [7,8]. That may indicate the necessity of introducing into the heat balance equations of (a) the temperature of valence holes as the third temperature in the TSM, and (b) a spatially distributed heat source term resulted from release of the potential energy due to decay of valence holes generated by fast electrons [9].…”

Energy dissipation in dielectrics after swift heavy-ion impact: A hybrid model

“…35 Figure 5 shows the calculated electron density for different times after the ion impact obtained from the MC method. The spatial and temporal evolution of the density is governed by three major mechanisms 8,9,20 following the initial excitation: the electron transport, which moves electrons away from the center of the track, the secondary electron ionizations, which increase the total number of electrons most efficiently at short timescales, and the Auger recombinations of deep atomic shells, which increase the number of electrons most pronounced in the track core.…”

“…[10][11][12][13][14][15][16][17] Recently, it has been used for studying excitation and relaxation of electrons irradiated with SHI or laser pulses. 8,[16][17][18][19][20] Within the method, each process occurring with each particle in the system is considered event by event. Every particle undergoes a collision process with a certain probability.…”

“…Once the electrons exhibit a thermalized behavior, the MC part is considered to be finished, and we switch to the TTM calculations. 6,8 The details of the transition from one model to the other one are described in Sec. II C.…”

“…In previous works, 8,9 we introduced our developed combination of the Monte Carlo method (MC) and the TTM. We demonstrated that our combined method MC-TTM is capable of calculating material parameters like the electron diffusivity and the electron-phonon coupling.…”