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Low-energy electrons (LEEs) are known to be effective in causing strandbreaks in DNA. Recent experiments show that an important direct source of LEEsis the intermolecular Coulombic decay (ICD) process. Here we propose a newcascade mechanism initiated by core excitation and terminated by ICD anddemonstrate its properties. Explicit calculations show that the energies of theemitted ICD-electrons can be controlled by selecting the initial atomicexcitation. The properties of the cascade may have interesting applications inthe fields of electron spectroscopy and radiation damage. Initiating such acascade by resonant X-ray absorption from a high-Z element embedded in acancerous cell nucleus, ICD will deliver genotoxic particles \textit{locally}at the absorption site, increasing in that way the controllability of theinduced damage.

A new intermolecular mechanism to selectively drive photoinduced damages