When ionizing radiation passes biological matter, a large number of secondary electrons
with very low energies (< 3 eV) is produced. It is known that such electrons cause an efficient …

In biological tissues, ionizing radiation interacts with a variety of molecules and the
consequences include cell killing and the modification of mechanical properties …

A major obstacle to the gas-phase study of larger (bio) molecular systems is the vaporisation
step, that is, the introduction of intact sample molecules into the gas-phase. A promising …

Radiation-induced damage of biological matter is an ubiquitous problem in nature. The
influence of the hydration environment is widely discussed, but its exact role remains …

We present a systematic experimental analysis of the 1: 1 complex of 2, 7-diazaindole
(27DAI) with water in the gas phase. The complex was characterized by using two-color …

Mass spectroscopic investigations on tetrahydrofuran (THF, C4H8O), a common model
molecule of the DNA-backbone, have been carried out. We irradiated isolated THF and …

Experiments on neutral gas-phase nucleosides are often complicated by thermal lability.
Previous mass spectrometry studies of nucleosides have identified enhanced relative …

Recent multi-photon ionization (MPI) experiments on uracil revealed a fragment ion at m/z
84 that was proposed as a potential marker for ring opening in the electronically excited …

Multi-photon ionization experiments have been carried out on thymine-water clusters in the
gas phase. Metastable H 2 O loss from T+(H 2 O) n was observed at n≥ 3 only. Ab initio …

Proton transfer (PT) from protonated pyridine to water molecules is observed after excitation
of microhydrated protonated pyridine (Py) clusters PyH+ (H2O) n (n= 0–5) is induced by a …