We investigate the influence of the autoionizing 3s3p(6)nℓ resonances on the fifth harmonic generated by 200-240 nm laser fields interacting with Ar. To determine the influence of a multielectron response we develop the capability within time-dependent R-matrix theory to determine the harmonic spectra generated. The fifth harmonic is affected by interference between the response of a 3s electro...

the time evaluation of quantum entropy in a four-level double- type atomic system is theoretically investigated. quantum entanglement of the atom and its spontaneous emission fields is then discussed via quantum entropy. it is found that the degree of entanglement can be increased by the quantum interference induced by spontaneous emission. the phase dependence of the atom-field entanglement is...

Recent electrochemical studies have reported aqueous CO2 reduction to formic acid, formaldehyde and methanol at potentials of ca. -600 mV versus SCE, when using a Pt working electrode in acidic pyridine solutions. In those experiments, pyridinium is thought to function as a one-electron shuttle for the underlying multielectron reduction of CO2. DFT studies proposed that the critical step of the...

Multielectron ionization and Coulomb explosion of methane clusters (CA4)n, A ) H, D, and T, in very intense (I ) 1018-1019 W cm-2) laser fields were studied using classical dynamics simulations. The products of Coulomb explosion involve light A+ ions (p, d, and t nuclei) with energies up to 20 keV, C4+ ions at I ) 1018 W cm-2, and C6+ ions (carbon nuclei) with energies up to 110 keV at I ) 1019...