We have been testing the theory used to calculate internal-conversion coefficients (ICCs) by making a series of measurements of αK values with precision better than ±2%. So far we have measured E3 transitions in three nuclei, 103Rh, 111Cd and 134Cs; and M4 transitions in six nuclei, 119Sn, 125Te, 127Te, 137Ba, 193Ir and 197Pt. Together, these span a wide range of A and Z values. In all cases, t...

Barium isotopes could be a novel tracer in low-temperature geochemical processes such as the Ba cycle rivers and oceans. Equilibrium isotope fractionation between Ba-hosting minerals aqueous solution is of great importance for applications geochemistry, but it remains poorly constrained. In this study, we performed first-principles calculations based on density functional theory (DFT) to determ...

Isotopic and elemental abundance signatures in the mass range Sr through Hf have been determined in a silicon carbide-rich sample of the Murchison carbonaceous chondrite, using inductively-coupled plasma mass spectrometry (ICP-MS). Despite the problem of isobaric interferences useful results were obtained for a number of isotopes, several for the first time. While disagreements between astrophy...

A quantum computer, once implemented, is expected to have several applications with significant scientific and social utility due to its ability to execute specific algorithms with scaling laws quadratically or exponentially faster than any known classical algorithm that accomplishes the same task [1]. The fundamental unit of information in a quantum computer is the qubit, which is physically r...

Radioisotopes of cesium are powerful tracer for oceanographic studies. In this work, a novel method was developed determination ultra-low level 135Cs and 137Cs in seawater using triple-quadrupole inductively coupled plasma mass spectrometry (ICP-MS/MS). Cesium pre-concentrated from up to 45 L samples ammonium molybdophosphate (AMP) adsorption, following selective leaching Sr(OH)2. The further p...

Metalloproteins (metal-binding proteins) refer to proteins containing metal ion cofactors. The importance of these proteins has increased owing to their involvement in many biological processes. Here, we introduce an analytical platform based on online coupling of miniaturized asymmetrical flow field-flow fractionation (mAF4) and inductively coupled plasma mass spectrometry (ICPMS) for size sep...

A simple and rapid method for the determination of 137Ba isotope abundances in water samples by inductively coupled plasma-optical emission spectrometry (ICP-OES) coupled with least-squares support vector machine regression (LS-SVM) is reported. By evaluation of emission lines of barium, it was found that the emission line at 493.408 nm provides the best results for the determination...