Complete photo-fragmentation of the deuterium molecule

Article

关键词: DIFFERENTIAL CROSS-SECTIONS;    DOUBLE-PHOTOIONIZATION;    DOUBLE-IONIZATION;    HYDROGEN MOLECULE;    D-2;    H-2;    HE;    GAMMA,2E;   

DOI  :  10.1038/nature02839

来源: SCIE

【 摘 要 】

All properties of molecules - from binding and excitation energies to their geometry - are determined by the highly correlated initial-state wavefunction of the electrons and nuclei. Details of these correlations can be revealed by studying the break-up of these systems into their constituents. The fragmentation might be initiated by the absorption of a single photon(1-6), by collision with a charged particle(7,8) or by exposure to a strong laser pulse(9,10): if the interaction causing the excitation is sufficiently understood, the fragmentation process can then be used as a tool to investigate the bound initial state(11,12). The interaction and resulting fragment motions therefore pose formidable challenges to quantum theory(13-15). Here we report the coincident measurement of the momenta of both nuclei and both electrons from the single-photon-induced fragmentation of the deuterium molecule. The results reveal that the correlated motion of the electrons is strongly dependent on the inter-nuclear separation in the molecular ground state at the instant of photon absorption.

【 授权许可】

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