Determining the composition of Archean atmosphere and oceans is vital to understanding environmental conditions that existed on surface early Earth. The analysis atmospheric remnants in fluid inclusions trapped Archean-aged samples has shown Xe isotopic signature progressively evolved via mass-dependent fractionation, arriving at a modern around Archean-Proterozoic transition. mechanisms drivin...

Binary collision-induced hyper-Rayleigh (CIHR) spectra of Kr-Xe gaseous system are computed quantum mechanically and classically within the frequency range up to 380 cm(-1). The intensities are expressed in absolute units. The details of the theory developed for the CIHR spectra are given and the properties of the profiles as well as the depolarization ratio frequency dependence are discussed. ...

In the Introduction section of this Research Article, description on membrane geometry was incorrect. The first sentence fourth paragraph in section, “Herein we prepared high-silica CHA zeolite membranes ceramic hollow fiber substrates for Kr/Xe separation.” should be revised to read disk This change does not affect interpretation data and conclusions, but guarantees a consistent with other sec...

Weakly-bound atoms and molecules (Ar, Kr, Xe, CO, CH4, CO2, CH3OH, N2O, and N2) are used to probe the photochemical interactions of chemisorbed oxygen on rutile TiO2(110). Ultraviolet irradiation of chemisorbed oxygen co-adsorbed with the probe species leads to photon-stimulated desorption (PSD) of some of the probe species (e.g. Kr and CH4), but not others (e.g. CO2 and N2O). Without chemisorb...

Introduction: The D’Orbigny angrite, a 16.55 kg stone, was found 1979 in Argentina [1]. Mineralogy and chemistry of this meteorite were characterized in detail [2-6]. A Pb-U-Th age of 4.559 Ga was obtained for pyroxenes by Jagoutz et al. [7]. Here we report results on the noble gas isotopic composition and, in particular, on the cosmic-ray exposure (CRE) age of D’Orbigny. Cosmogenic component: ...

Recently, it was shown that genuine Ng-Ng chemical bonds are present in the endohedral fullerenes Ng(2)@C(60) in the case of Ng=Xe, while it is more debatable whether a chemical bond exist for Ng=Ar and Kr. The lighter homologues with helium and neon are weakly bonded van der Waals complexes. The presence of a noble gas dimer inside the cage is expected to modify the exohedral reactivity of the...

Energyand time-dependent mass spectrometry is used to determine the relative number density of singlyand multiply-charged metal-ion fluxes incident at the substrate during highpower pulsed magnetron sputtering (HIPIMS) as a function of the average noble-gas ionization potential. Ti is selected as the sputtering target since the microstructure, phase composition, properties, and stress-state of ...

The electronic and geometric structure of rare gas clusters doped with rare-gas atoms Rg=Xe, Kr or Ar is investigated with fluorescence excitation spectroscopy in the VUV spectral range. Several absorption bands are observed in the region of the first electronic excitations of the impurity atoms, which are related to the lowest spin-orbit split atomic P1 and P1 states. Due to influence of surro...