Abstract
In this chapter we present a selection of physical problems where the method in this thesis with its real time treatment of the electron–phonon dynamics can offer significant insights. The problems put this work in a physical frame and, above all, provide a motivation for its findings. First, we cover the general problem of radiation damage, picking results in the damage to biological systems and metals. Second, we explore the ultrashort heating of metals with a laser and the subsequent warm dense matter dynamics.
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Notes
- 1.
One could wonder if it is appropriate to take special relativity into account at this scale of energies. The rest energy for an iron atom is \(\approx \)50 GeV, several orders of magnitude above the energies considered in the collisions, so special relativity can be safely ignored in this case. By contrast, for cosmic-ray cascades, relativity plays a crucial role since the projectiles are usually light and extremely fast.
- 2.
It is intuitive that the higher the initial energy of the PKA, the larger the number of sub-cascades expected. A recent article [8] studies high energy iron cascades (up to 0.5 MeV). Contrary to intuition and common belief, the authors reported a reduced cascade branching compared to lower energy cascades and a rather continuous distribution of damage.
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Rizzi, V. (2018). Physical Motivation. In: Real-Time Quantum Dynamics of Electron–Phonon Systems. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-96280-1_2
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