Quantum chemical study of the reaction paths and kinetics of acetaldehyde formation on a methanol-water ice model.

Acetaldehyde (CHCHO) is ubiquitous in interstellar space and is important for astrochemistry as it can contribute to the formation of amino acids through reaction with nitrogen containing chemical species. Quantum chemical and reaction kinetics studies are reported for acetaldehyde formation from the chemical reaction of C(P) with a methanol molecule adsorbed at the eighth position of a cubic water cluster. We present extensive quantum chemical calculations for total spin = 1 and = 0.

Bound Electron Enhanced Radiosensitisation of Nimorazole upon Charge Transfer.

This novel work reports nimorazole (NIMO) radiosensitizer reduction upon electron transfer in collisions with neutral potassium (K) atoms in the lab frame energy range of 10-400 eV. The negative ions formed in this energy range were time-of-flight mass analyzed and branching ratios were obtained. Assignment of different anions showed that more than 80% was due to the formation of the non-dissociated parent anion NIMO at 226 u and nitrogen dioxide anion NO at 46 u.