Abstract Isotopic ratios of radioxenons sampled in the atmosphere or subsurface can be used to verify occurrence an underground nuclear explosion (UNE). Differences half-lives radioactive xenon precursors and their decay-chain networks produce different time-dependent concentration profiles isotopes allowing isotopic for tracking UNE histories including estimating time detonation. In this study...

Detailed models of the explosion of a white dwarf, which include self-consistent calculations of the light curve and spectra, proved a link between observational quantities and the underlying explosion model. These calculations assume spherical geometry and are based on parameterized descriptions of the burning front. Recently, first multidimensional calculations for nuclear burning fronts have...

background: fire and explosion hazards are extremely important in processing units. this study was performed to identify the risk centers, the potential damage caused by fire and explosion, and the days of production cessation in the processing company. materials and methods: the present qualitative case study was conducted using dow’s index in 2015. the fire and explosion hazard index and leve...

A method of weapon detection for the Comprehensive nuclear-Test-Ban-Treaty (CTBT) consists of monitoring the amount of radioxenon in the atmosphere by measuring and sampling the activity concentration of (131m)Xe, (133)Xe, (133m)Xe, and (135)Xe by radionuclide monitoring. Several explosion samples were simulated based on real data since the measured data of this type is quite rare. These data s...

We present a nucleosynthesis calculation of a 25 M star of solar composition that includes all relevant isotopes up to polonium. In particular, all stable isotopes and necessary nuclear reaction rates are covered. We follow the stellar evolution from hydrogen burning till iron core collapse and simulate the explosion using a “piston” approach. We discuss the influence of two key nuclear reactio...

We address recent developments in the exploration of quantum nuclear dynamics in large, Ðnite, low-temperature systems, focusing on BoseÈEinstein condensates (T ^ 100 nK), optical molasses (T ^ 10È100 lK) and aromatic clusters (T \ 0.4 K). The expansion of optical molasses bears a close analogy molecule ÉHe n to the nuclear dynamics of Coulomb explosion of multicharged clusters. Spectroscopy of...

The results of the measurements of ionization due to the beta and gamma-radiations near the ground surface from 1967 through 1969 are reported, and are discussed comparing with those obtained from 1963 through 1966. The ionization due to the beta-radiation decreased gradu ally, and the mean value for this period is about I J at one meter above the ground surface, and that by the gamma-radiation...