Photodissociation Imaging of Diatomic Sulfur (S2)

Photodissociation imaging of diatomic sulfur (S2).

The photodissociation of diatomic sulfur, S(2), in the region of the first dissociation limit is studied with velocity map imaging. Correlated fine structure distributions P(J1,J2) for the two S((3)P(J)) fragments are determined at selected photolysis wavelengths. Image analysis of the speed distributions of the atomic fragments following product-state-specific detection results in a revision o...

Sulfur Isotopic Fractionation in Vuv Photodissociation of Sulfur Dioxide: Implications for Meteorite Data

Introduction: Mass independent sulfur isotopic compositions have been observed in chondritic chondrules and organics [1, 2] and in bulk CM chondrites, achondrites and iron meteorites [3-6]. A significant excess of ∆33S (= δ33S – 0.515 δ34S) was observed in the Dhajala chondrite. Sulfonic acid extracts from the carbonaceous chondrite, Murchison also displayed a significant 33S anomaly and may be...

Photodissociation of polarized diatomic molecules in the axial recoil limit: Control of atomic polarization

Relaxation dynamics of helium nanodroplets after photodissociation of a dopant homonuclear diatomic molecule. The case of Cl2@((4)He)(N).

To investigate the quantum dynamics of the relaxation process of excited helium nanodroplets, (4)HeN, arising from the photodissociation of Cl2 embedded molecules (B ← X electronic transition), here we have performed a time dependent density functional theory (TDDFT) study considering nanodroplets of different sizes (N = 50, 100, 200, 300 and 500), extending a previous study which was centered ...

Slice imaging of photodissociation of spatially oriented molecules

An electrostatic ion lens to spatially orient parent molecules and to image the angular distribution of photofragments is presented. Photodissociation of laboratory-oriented molecules makes it possible to study the dynamics of the dissociation process in more detail compared to photodissociation of nonoriented molecules. Using the velocity map imaging technique in combination with the slice ima...