Electronic spectroscopy of the C(2) molecule is investigated in Ar, Kr, and Xe matrixes in the 150-500 nm range. In the Ar matrix, the D ((1)Sigma(u)(+)) <-- ((1)Sigma(g)(+)) Mulliken band near 240 nm is the sole absorption in the UV range, whereas in the Kr matrix additional bands in the 188-209 nm range are assigned to the Kr(n)()(+)C(2)(-) <-- Kr(n)()C(2) charge-transfer absorptions. Because...

The matrix shifts of the H-Xe stretching frequency of noble-gas hydrides, HXeCCH, HXeBr, and HXeI in various noble-gas matrices (in Ne, Ar, Kr, and Xe matrices) are investigated via the hybrid quantum-classical simulations. The order of the H-Xe stretching frequencies is found to be ν(gas) < ν(Ne) < ν(Xe) < ν(Kr) < ν(Ar) for HXeCCH and HXeBr, while it is ν(gas) < ν(Ne) < ν(Xe) < ν(Ar) < ν(Kr) f...

Xe and Kr gases produced during the use of uranium dioxide (UO2)-fuelled reactors can easily form bubbles, resulting in fuel swelling or performance degradation. Therefore, it is important to understand influence point defects on behaviour UO2. In this work, effects behavioural characteristics Xe/Kr clusters UO2 have been systematically studied using molecular dynamics. The results show that oc...

Implantation and subsequent behaviour of heavy noble gases (Ar, Kr, Xe) in few-layer graphene sheets nanodiamonds is studied both using computational methods experimentally X-ray absorption spectroscopy. spectroscopy provides substantial support for the Xe-vacancy (Xe-V) defect as a main site Xe nanodiamond. It shown that thin stacks distort layers, forming bulges. The energy an ion placed betw...

Large Area Avalanche Photodiodes (LAAPDs) were used for a series of systematic measurements of the scintillation light in Ar, Kr, and Xe gas. Absolute quantum efficiencies are derived. Values for Xe and Kr are consistent with those given by the manufacturer. For the first time we show that argon scintillation (128 nm) can be detected at a quantum efficiency above 40%. Low-pressure argon gas is ...

Noble gas concentrations and isotopic compositions have been measured in eight samples of pillow basalt glasses collected from seven different localities along 250 km of the Mariana Trough spreading and rifting axis. The samples have uniform and mid-ocean ridge basalt (MORB)-like He/He values of 9±12 ́ 10 (6.4±8.6 times atmospheric) despite large variations in He. Concentrations of the noble ga...

This study shows that a range of separation applications for the MFM family metal–organic frameworks (MOFs) can be expanded to include effective separations Xe/Kr binary gas mixtures. The copper paddlewheel-based, isoreticular MOFs has shown previously an excellent performance CO2/CH4 and CO2/N2 separations. proposed new function aids development this MOF series into multiuse functional materia...

The physical structure of Co/Cu multilayers, sputtered in different gases ~Ar, Kr, and Xe! together with the domain structures that these films support have been investigated using electron microscopy in an attempt to explain the differences in their measured magnetoresistance ~MR!. Both planar and cross-sectional analyses were undertaken. Due to only partial antiferromagnetic coupling submicro...

Dolerite samples taken from Sandford Cliffs, Antarctica were used as meteoritic analogues for cold desert residence and studied to investigate subsequent alteration of noble gas inventories. The 84 Kr/ 132 Xe and 36 Ar/ 132 Xe ratios were seen to decrease with increased amounts of weathering, the δ 15 N showed little change. The most weathered dolerite showed a signature close to Martian interior.

We study monolayers of noble gas atoms (Xe, Kr, Ar, and Ne) deposited on individual ultraclean suspended nanotubes. For this, we record the resonance frequency of the mechanical motion of the nanotube, since it provides a direct measure of the coverage. The latter is the number of adsorbed atoms divided by the number of the carbon atoms of the suspended nanotube. Monolayers form when the temper...