The energies and intensities of thermal-neutron capture γ-rays from natural neon have been measured with a Ge(Li) detector in pair and anti-coincidence spectrometer arrangements. Internal target of neon gas has been used. The reaction Q-value and excitation energies have been determined. Cross sections for thermal neutron capture in 20Ne and 22Ne have been deduced. The level schemes of 21Ne and 23Ne are discussed on the basis of the Nilsson model. Calculations with and without inclusion of Coriolis interaction have been made for 23Ne. These are compared with corresponding calculations on 25Al and 23Na.
A secondary target Energy Dispersive X-ray Fluorescence spectrometer with three axial geometry has been used in multielement analysis of aerosols. A new type of monitoring system has been designed to monitor the flow of secondary photons and thus minimize the influence of time variation in the X-ray intensity. The aerosols were divided in two size fractions by means of a virtual impactor and deposited on filters. The absolute concentrations of the different elements were obtained by use of standard samples with known element concentrations. Detection limits for sixteen elements are given and are in the order of ng per cm2. The method has been applied to aerosols of widely varying composition and concentration in ambient atmosphere and industrial environment.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.