Extensive Fragmentation, Atom Transfer, H loss and Cross-linking Induced by Single Collisions between Carbon Ions and Protonated Antibiotics in the Gas Phase.

The direct effects of ionizing radiation on antibiotics are largely unknown. Here, we report mass spectra of the cationic products of the irradiation of three antibiotics by carbon ions at 10.4 MeV kinetic energy.

Addressing three-body fragmentation of methane dication using "native frames": Evidence of internal excitation in fragments.

The three body fragmentation of methane dication has been studied using the technique of cold target recoil ion momentum spectroscopy. The process is initiated by impact of energetic Ar9+ ions on neutral methane and the data is subsequently collected in coincidence with Ar8+ projectile. By analysing the dissociation channels leading to (H + H+ + CH2+) and (H + H2+ + CH+) fragments, it is concluded that these fragments are formed in a sequential manner via formation of molecular intermediates CH3+ and CH2+ respectively.

Structural and Functional Characterization of Orcokinin B-like Neuropeptides in the Cuttlefish ().

The cuttlefish () is a Cephalopod mollusk that lives in the English Channel and breeds in coastal spawning grounds in spring. A previous work showed that the control of egg-laying is monitored by different types of regulators, among which neuropeptides play a major role. They are involved in the integration of environmental cues, and participate in the transport of oocytes in the genital tract and in the secretion of capsular products.

Unexplained dissociation pathways of two-body fragmentation of methane dication.

The ion-induced fragmentation of CH into H and CH is studied using a cold target recoil ion momentum spectroscopy in coincidence with the charge state of the post-collision projectile. Using constant velocity Ar and N, results from four different datasets are presented, with a selection on the final charge state of the projectile (Ar or Ar and N or N). Three distinct dissociation pathways (I, II, and III) are observed for each dataset, with the mean kinetic energy release values of around 4.

Influence of the viscosity and charge mobility on the shape deformation of critically charged droplets.

In this work, we model and simulate the shape evolution of critically charged droplets, from the initial spherical shape to the charge emission and back to the spherical shape. The shape deformation is described using the viscous correction for viscous potential flow model, which is a potential flow approximation of the Navier-Stokes equation for incompressible Newtonian fluids. The simulated shapes are compared to snapshots of experimentally observed drop deformations.