Femtosecond Laser Induced Coulomb Explosion Imaging of Aligned OCS Oligmers inside Helium Nanodroplets

Abstract

Dimers and trimers of carbonyl sulfide (OCS) molecules embedded in helium nanodroplets are aligned by a linearly polarized 160 ps long moderately intense laser pulse and Coulomb exploded with an intense 40 fs long probe pulse in order to determine their structures. For the dimer, recording of 2D images of OCS${}^{+}$ and S${}^{+}$ ions and covariance analysis of the emission directions of the ions allow us to conclude that the structure is a slipped-parallel shape similar to the structure found for gas phase dimers. For the trimer, the OCS${}^{+}$ ion images and corresponding covariance maps reveal the presence of a barrel-shaped structure (as in gas phase) but also other structures not present in the gas phase, most notably a linear chain structure.

References in corpus (6)

• Control and femtosecond time-resolved imaging of torsion in a chiral molecule
• Long-lasting field-free alignment of large molecules inside helium nanodroplets
• Gas-phase structural isomer identification by Coulomb explosion of aligned molecules
• Strongly aligned molecules inside helium droplets in the near-adiabatic regime
• Switched Wave Packets with Spectrally Truncated Chirped Pulses
• Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets

Cited by in corpus (4)

• Long-lasting field-free alignment of large molecules inside helium nanodroplets
• Alignment of the CS${}_2$ Dimer Embedded in Helium Droplets Induced by a Circularly Polarized Laser Pulse
• Dopant ionization and efficiency of ion and electron ejection from helium nanodroplets
• Production of CO3+ through the Strong-Field Ionization and Coulomb Explosion of Formic Acid Dimer