The near ultraviolet photodissociation dynamics of silver atom – rare gas dimers have been studied by velocity map imaging. Ag–RG (RG = Ar, Kr, Xe) species generated by laser ablation are excited in the region of the C (2

Van der Waals forces are among the weakest, yet most decisive interactions governing condensation and aggregation processes and the phase behaviour of atomic and molecular matter. Understanding the resulting structural motifs and patterns has become increasingly important in studies of the nanoscale regime. Here we measure the paradigmatic van der Waals interactions represented by the noble gas...

We present the Kr-Kr derived exposure ages for H-chondrites which were recently investigated for their Cl-Ar ages. After demonstrating that our Kr-Kr ages are reliable and reproducible we find hints that Kr/Kr and Kr/Kr might depend on the relative concentrations on the target elements Rb, Sr, Y, Zr, and Nb. In addition, the Kr-Kr ages for the large L-chondrite Gold Basin indicate that the Kr-K...

Molecular dynamics simulations of Helium (He), Neon (Ne), Argon (Ar), Krpton (Kr) and Xenon (Xe) encapsulated in C60 are discussed, as well simulations of Fullerenes containing anywhere from two to four He atoms. Even for single atom encapsulates, no species resides at the geometric center of the Fullerene cage. Smaller atoms sit more off-center than larger ones, and He appears to be a special ...

The dynamics of floating two-dimensional {2D) monolayers of Xe, Kr, Ar, and Ne are explored over a range of lattice spacings and temperature using the self-consistent phonon theory. Phonon dispersion curves and the zero-point energy are calculated and appropriate Debye temperatures and rms vibrational amplitudes (u2) estimated at T =0 K. The results show that floating monolayers of Ar and Xe re...

The optimal kinematic parameters for the formation of the most stabilized products in direct three-body recombination Cs + Br + R → CsBr + R with R = Hg, Xe, Kr are determined by the deformed polyhedron method for the third body energy and the ion encounter energy ranging from 1 to 10 eV. The stabilization effectivity functions are obtained for each atom, and the mean effectivities of the atoms...

Hyperpolarized (hp) (129)Xe and hp (83)Kr for magnetic resonance imaging (MRI) are typically obtained through spin-exchange optical pumping (SEOP) in gas mixtures with dilute concentrations of the respective noble gas. The usage of dilute noble gases mixtures requires cryogenic gas separation after SEOP, a step that makes clinical and preclinical applications of hp (129)Xe MRI cumbersome. For h...

Using selective laser extraction technique combined with sensitive ion-counting mass spectrometry, we have analyzed the isotopic structure of fission noble gases in U-free La-Ce-Sr-Ca aluminous hydroxy phosphate associated with the 2 billion yr old Oklo natural nuclear reactor. In addition to elevated abundances of fission-produced Zr, Ce, and Sr, we discovered high (up to 0.03 cm(3) STP/g) con...