Pair-beam propagation in a magnetised plasma for modelling the polarized radiation emission from gamma-ray bursts in laboratory astrophysics experiments

The propagation of a relativistic electron-positron beam in a magnetized electron-ion plasma is studied, focusing on the polarization of the radiation generated in this case. Special emphasis is laid on investigating the polarization of the generated radiation for a range of beam-plasma parameters, transverse and longitudinal beam sizes, and the external magnetic fields. Our results not only help in understanding the high degrees of circular polarization observed in gamma-rays bursts but they also help in distinguishing the different modes associated with the filamentation dynamics of the pair-beam in laboratory astrophysics experiments

Production of Lithium Carbonate from Geothermal Brine by Selective Extraction of Lithium Using a Novel Ion Sieve Method

The project implements a novel approach to extract lithium from a geothermal brine with minimal water loss. Production of high-capacity lithium-ion (Li-ion) batteries for electric vehicles (EV) is believed to be the way to reduce dependence on fossil-fuel based vehicles. Currently, most of the lithium in the world comes from the mining of lithium or the evaporative/concentration of the brine. Mining is not environmentally friendly, and the evaporative process takes 12 months for the completion of the extraction process and results in a large amount of water loss which can lead to scarcity of water. The brines constitute 82% of world reserves while the other 17% is the ore mineral. Hence, there is a need to transition to a sustainable brine extraction process to keep up with the demand of lithium in the market. To address these issues, we are designing and developing a method to efficiently extract lithium from a geothermal brine using a low-cost, simple, easily scalable, and low-water-use adsorption technique. We will produce and utilize the H4Mn4.9Zr0.1O12 compound for the adsorption of lithium from the brine and then use HCl for the desorption of lithium. In the end, we will produce high-purity lithium carbonate that can be used in a Li-ion battery. The major benefit of the system is that the excess geothermal water can eventually be recycled back as there is no production of toxic chemical substances. The process will significantly increase the domestic production of lithium which will eventually eliminate the need for lithium import to produce electric vehicles. The health hazards caused by lithium mining will also be eliminated by the application of this process. Since most of the chemicals are recycled back, net waste during the extraction process is minimum.https://digitalcommons.odu.edu/gradposters2023_engineering/1003/thumbnail.jp

Exclusion Principle for Quantum Dense Coding

We show that the classical capacity of quantum states, as quantified by its ability to perform dense coding, respects an exclusion principle, for arbitrary pure or mixed three-party states in any dimension. This states that no two bipartite states which are reduced states of a common tripartite quantum state can have simultaneous quantum advantage in dense coding. The exclusion principle is robust against noise. Such principle also holds for arbitrary number of parties. This exclusion principle is independent of the content and distribution of entanglement in the multipartite state. We also find a strict monogamy relation for multi-port classical capacities of multi-party quantum states in arbitrary dimensions. In the scenario of two senders and a single receiver, we show that if two of them wish to send classical information to a single receiver independently, then the corresponding dense coding capacities satisfy the monogamy relation, similar to the one for quantum correlations.Comment: v2: 6 pages, RevTeX 4, title changed, previous results unchanged, new results adde