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Double-beta decay of 104Ru
Get PDFIn this study we have carried out the calculations concerning the double-beta decay of 104Ru to 104Pd. The calculations utilize the microscopic interacting boson model (IBM-2) for the nuclear matrix elements, and exact Dirac wave functions with finite nuclear size and electron screening for phase space factors. From these results, the half-life estimates for two-neutrino and neutrinoless double beta decay can be obtained
JUNO Sensitivity to geoneutrinos
Get PDFGeoneutrinos are neutrinos generated from the decay of natural radioactive elements in the Earth. From these decays, the ratio between the number of neutrinos and the energy released (radiogenic heat) is well known. In order
to understand the different processes of the Earth, Bulk Silicate Earth models are formulated, providing expected abundances of radioactive elements and radiogenic heat. Therefore, by measuring geoneutrinos, the different BSE models can be tested. Additionally, the total amount of heat released from the surface of the Earth is coupled with the different dynamical processes. The total heat budget is composed of the cooling from the Earth’s formation and the radiogenic heat. Thus, geoneutrinos also give insight into dynamical processes. The Jiangmen Underground Neutrino
Observatory (JUNO) is a 20 kton Liquid Scintillator detector that will be able to measure geoneutrinos with high precision thanks to its great volume. It is expected to achieve 10% precision in just 6 years, improving upon current results from Borexino and KamLAND
On neutrino telescopes and their ability to infer astrophysical neutrino sources via the Glashow resonance
Get PDFUsing the Glashow resonance candidate event recently identified by IceCube, we infer the ultra-high energy astrophysical neutrino source. Since it can distinguish νe from νe, the Glashow resonance is a valuable probe to identify the source of astrophysical neutrinos. With the available experimental information we set a constraint on the νe fraction of astrophysical neutrinos and find that the
μ-damped pγ source is excluded at about 2σ confidence level and that there is a weak preference for the pp source. Next generation neutrino telescopes will be able to distinguish between ideal pp and pγ sources with a high significance assuming a single power-law neutrino spectrum
Disséquer l’ornement, interpréter l’hybridité humano-végétale. Diphuès – Une base de données polyvalente
Get PDFhe Diphuès database is an open access research, exchange and dialogue tool devoted to the half-human half-vegetal figures in Roman Antiquity. It is the result of two research projects that have been carried out since 2012 under the aegis of the F.R.S.-FNRS (Fonds de la recherche scientifique de Belgique). From 2024, it will be made available in open access to the international scientific community by the ‘Service d’Histoire de l’art et Archéologie de l’Antiquité gréco-romaine’ (SHAArAGR) and the ‘Centre Informatique de Philosophie & Lettres’ (CIPL) of the University of Liège. Diphuès is based on a corpus originally designed as a personal work tool to serve specific research objectives. This tool has undergone several major modifications, in its structure and purpose, so that it can be used to produce new knowledge. Its network application is seen as the final stage in the research communication process and is part of a wider effort to share knowledge and resources
From the river to the sea of the setting sun: route networks between the Euphrates and the Mediterranean during the Iron Age (1200-600 BCE)
Get PDFThe study of ancient roads has been important in understanding political, social, and cultural transformations of ancient trade networks and economies. In the Near East, landscape-oriented research has immensely contributed to the analysis of pre-modern road systems. However, while for Roman and medieval periods this method produced a dataset that implemented the rich corpus of historical information, research on pre-Roman connectivity networks strongly relies on the archaeological record, mostly represented by data from surveys. The use of these data allows a long term and chronologically unprecise reconstruction of ancient itineraries. Therefore, gaps in the data are often filled by the transposition of later itineraries, risking reiterating the idea that road networks are static, stable over a very long period. This article aims to contextualise connecting networks and route landscapes from the Euphrates river to the Mediterranean sea during the Iron Age (1200-600 BCE). The study will make use of an integrated approach by using multiple datasets. The research will argue that by considering different data, it is possible to offer a critical interpretation of the main route network employed during the Iron Age to connect the Euphrates area with the sea
Discussing the effect of sampling error on the estimation of ozone variability and trend in UT/LS
Get PDFOne of the main focuses of the investigation of climate change is the ozone layer in the upper troposphere/lower stratosphere (UT/LS) and its relationship to temperature. Multiple studies have calculated trends at the regional and
global scale in the UT/LS, using a variety of measurement methods including data from satellites and the ground. Nonetheless, the predicted trends could be greatly impacted by the coverage and quality of the measurements over time and space. Using a dataset that combines the ozone soundings provided by SHADOZ, NDACC, and WOUDC, this work examines the effects of sampling error in the Northern Hemisphere mid-latitudes (NH, 30◦N-60◦N), and for different vertical layers in the UT/LS on the estimation of the ozone inter-annual variability and trends in the periods pre-2000 (1978–1999) and post-2000 (2000–2022). The vertical ozone concentration profiles are grouped into three categories, according to the temporal gaps of the historical time series, and assessed in terms of their usage for climate studies
Simulations of RF waves propagation in hot magnetized (2H) plasma in DTT Scenario
Get PDFAn analytical model and numerical simulations of the propagation and absorption of radio-frequency waves in hot magnetized (2H) plasma are presented. First, an investigation of the impact of thermal effects on the dispersion relation of the waves has been conducted by expanding the hot plasma dielectric tensor to the first order in temperature. Second, starting with the realistic Ion Cyclotron Heating (ICH) antenna model designed for the Divertor Tokamak Test project, a simple 1D (1-dimensional) model of the wave propagation has been developed. The antenna’s spectra have been extracted and analyzed using CSTR ⃝, and the 1D wave propagation has been performed through MATLABR ⃝
Tight-binding simulation of ultrafast pulse-assisted field emission from a metallic tip
Get PDFField emission is a powerful technique to gain insight into the electronic properties of materials. A strong and ultrashort laser pulse can periodically modify the potential barrier for electron tunnelling, giving rise to photon sidebands in the far-field electron energy distribution. The aim of this work is to present a novel tight-binding approach that simulates the laser-assisted field emission from a metallic tip taking account also of the electronic features of the emitter. The out-of-equilibrium electron dynamics of this inhomogeneous system is described using
the Green’s function formalism
Deep Focus ---A meta-learner solving inverse problems based on Deep Learning: Applications to Radio Interferometry
Get PDFWe present Deep Focus (DF) results on the ALMA image deconvolution problem for point-like sources. We compare DF reconstruction capabilities and execution times with those of CLEAN and other Deep Learning algorithms, showing improvements in reconstruction capabilities with respect to both, and an average speed-up factor of 280 with respect to CLEAN