Three-body sequential Coulomb explosions of CH3OD3+ induced by intense laser fields

Three-body Coulomb explosion of triply charged methanol-d (CH3OD3+), CH3OD3+→H++H2++COD+ induced by a laser field of (≈2 × 1014 W/cm2), is investigated by the coincidence momentum imaging (CMI) method. It is securely identified that the explosion proceeds in a stepwise manner and that there are two types of sequential pathways: one is a pathway in which H+ is ejected first, and the other is a pathway in which H2+ is ejected first. Dynamical information on the two types of explosion processes is extracted from the analysis of CMI correlation maps.