Tracing the photodissociation probability ofH2+in intense fields using chirped laser pulses

Abstract

The temporal evolution of the dissociation probabilities for various vibrational levels of H 2 + is observed in terms of shifts in the kinetic energy release dissociation spectra, induced by linearly chirped intense laser pulses. In contrast to previous observations, in which no dependence on the chirp sign was observed, the energy spectrum reported here shows peak shifts, up for negative chirp and down for positive chirp. For some vibrational levels, dissociation takes place early on in the pulse; hence, care must be taken while interpreting the effect of pulse duration in photodissociation studies. This interpretation is supported by numerical solutions of the time-dependent Schrödinger equation.

Following dynamic nuclear wave packets in N2,O2, and CO with few-cycle infrared pulses

“…In the present case (process (3) above), the shape of the stripes is determined by the chirp of the wave packet itself: higher vibrational states, which correspond to higher KER release, have closer vibrational spacings and thus the oscillation beating period, determined by the vibrational energy level spacing, is longer (see also [32]). Vibrational structure in the KER spectra of H 2 has been seen previously [33][34][35][36] Fig 6(a) [38] and [25].…”

Resonant Auger decay of the core-excited C*O molecule in intense x-ray laser fields

“…In the second model, only the vibrational motion is allowed in the nuclear dynamics, eliminating thereby DICES (hereafter referred to as the 'no DICES ' model). To exclude rotations from the Hamiltonian matrix (7), we apply the common approach [8,[31][32][33] and Y 1±1 | sin θ|Y 00 = 2 3 , respectively, where Y lm are the usual spherical harmonics. In the third model (hereafter referred to as the 'Atomic' model), the whole nuclear dynamics is excluded from the calculations.…”

Fragmentation ofCD+induced by intense ultrashort laser pulses

“…The ability to perform kinematically complete measurements and identify fragmentation channels unambiguously has deepened our understanding of laser-ion interactions [15,16,[19][20][21][22][23][24][25][26][27][28]. Heteronuclear molecules are an interesting subject for laser fragmentation studies due to their identifiable breakup channels, but they can present additional experimental challenges, especially as the mass ratio between the fragments increases.…”