State-specific enhanced production of positive and negative ions of gaseous SiCl4 and solid-state analogues following core-level excitation

▶ We investigated ionic dissociation dynamics of gaseous and condensed SiCl4. ▶ The Cl 2p → 8a1* excitation of SiCl4/Si(1 0 0) enhances Cl+ and Cl− yields. ▶ Excitation of Cl 2p to Rydberg orbitals of gaseous SiCl4 enhances Si− and Cl− yields.