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The need for quantitative characterization of the solar energetic particle (SEP) dynamics goes beyond being an academic discipline only. It has numerous practical implications related to human activity in space. The terrestrial magnetic…

Space Physics · Physics 2022-09-21 Valeriy Tenishev , Lulu Zhao , Igor Sokolov

This experimental study investigates a new technique to keep a satellite in orbit utilizing electrodynamics. The technique consists of establishing a charge on a satellite such that the body's motion through a planetary magnetic field…

Plasma Physics · Physics 2008-05-22 William R. Gorman , James D. Brownridge , Mason Peck

The recent increase in volume and complexity of available astronomical data has led to a wide use of supervised machine learning techniques. Active learning strategies have been proposed as an alternative to optimize the distribution of…

We use long-term electron and proton in-situ measurements made by the CXD particle instruments, developed by Los Alamos National Laboratory and carried on board GPS satellites, to determine total ionizing dose (TID) values and daily/yearly…

Space Physics · Physics 2020-12-02 Yue Chen , Matthew R. Carver , Steven K. Morley , Andrew S. Hoover

Reducing energy consumption is crucial to reduce the human debt's with regard to our planet. Therefore most companies try to reduce their energetic consumption while taking care to preserve the service delivered to their customers. To do…

Multiagent Systems · Computer Science 2022-08-03 Xavier Marjou , Tangui Le Gléau , Vincent Messié , Benoit Radier , Tayeb Lemlouma , Gaël Fromentoux

In this dataset we provide a comprehensive collection of magnetograms (images quantifying the strength of the magnetic field) from the National Aeronautics and Space Administration's (NASA's) Solar Dynamics Observatory (SDO). The dataset…

Solar and Stellar Astrophysics · Physics 2024-02-13 Laura E. Boucheron , Ty Vincent , Jeremy A. Grajeda , Ellery Wuest

A lot of R & D work is carried out in the CERN RD50 Collaboration to find out the best material for the Si detectors that can be used in the harsh radiation environment of HL-LHC, n and p-MCz Si was identified as one of the prime candidates…

Instrumentation and Detectors · Physics 2022-10-05 Shilpa Patyal , Nitu Saini , Balwinder Kaur , Puspita Chatterjee , Thresia Michael , Ajay K. Srivastava

We have developed Monte Carlo wave function simulation schemes to study cold collisions between magnesium atoms in a strong red-detuned laser field. In order to address the strong-field problem, we extend the Monte Carlo wave function…

Atomic Physics · Physics 2009-11-11 J. Piilo , E. Lundh , K. -A. Suominen

Context. The interplay between surface magnetic topology and chromospheric heating in active M dwarfs remains poorly constrained, limiting our understanding of their magnetic cycles and high-energy environments. Aims. We aim to test whether…

Solar and Stellar Astrophysics · Physics 2025-10-28 Shuai Liu , Jianrong Shi , Huigang Wei , Wenxian Li , Jifeng Liu , Shangbin Yang , Henggeng Han

This paper targets the efficient construction of a safety shield for decision making in scenarios that incorporate uncertainty. Markov decision processes (MDPs) are prominent models to capture such planning problems. Reinforcement learning…

Artificial Intelligence · Computer Science 2019-11-26 Nils Jansen , Bettina Könighofer , Sebastian Junges , Alexandru C. Serban , Roderick Bloem

We report on the development of a new shell-model Monte Carlo algorithm which uses the proton-neutron formalism. Shell model Monte Carlo methods, within the isospin formulation, have been successfully used in large-scale shell-model…

Nuclear Theory · Physics 2015-06-26 C. Ozen , D. J. Dean

Both active and passive magnetic shielding have been used extensively during past and current X-ray astronomy missions to shield detectors from soft protons and electrons entering through telescope optics. However, simulations performed…

Instrumentation and Detectors · Physics 2024-05-08 Christopher S. W. Davis , David Hall

Manned Mars missions planned in the near future of very low solar activity period and hence higher than acceptable radiation doses due mainly to the Galactic Cosmic Rays (GCR), would require special techniques and technological development…

Space Physics · Physics 2022-02-02 Nagaraja Kamsali , S. C. Chakravarty , Praveen Kumar Basuvaraj

The aim of this work is to investigate and characterise particle behaviour in an (observationally-driven) 3D MHD model of the solar atmosphere above a slowly evolving, non-flaring active region. We use a relativistic guiding-centre particle…

Solar and Stellar Astrophysics · Physics 2016-02-17 J. Threlfall , Ph. -A. Bourdin , T. Neukirch , C. E. Parnell

Here, a benchtop hybrid magnetic shield containing four mumetal cylinders and nine internal flexible printed circuit boards is designed, constructed, tested, and operated. The shield is designed specifically as a test-bed for building and…

Solar Proton Events (SPEs) can cause abrupt and significant enhancements to the Martian surface radiation dose. Observations of the impact of SPEs on the Martian surface are available from satellites and surface detectors, but the data set…

Earth and Planetary Astrophysics · Physics 2020-12-02 Dimitra Atri , Caitlin MacArthur , Ian Dobbs-Dixon

The intensity and energy spectrum of energetic charged radiation in the heliosphere are significantly influenced by solar activity. This phenomenon is known as solar modulation of galactic cosmic rays. As interplanetary travel becomes a…

High Energy Astrophysical Phenomena · Physics 2025-09-16 Miguel Orcinha , Fernando Barão , Bruna Bertucci , Emanuele Fiandrini , David Pelosi , Nicola Tomassetti

Fully Depleted Monolithic Active Pixels (FD-MAPS) represent a state-of-the-art detector technology and profit from a low material budget and cost for high energy physics experiments and other fields of research like medical imaging and…

Instrumentation and Detectors · Physics 2021-11-17 Coralie Neubüser , Thomas Corradino , Gian-Franco Dalla Betta , Lorenzo De Cilladi , Lucio Pancheri

In a strong magnetic field, a high-energy photon can be absorbed and then produce an electron-positron pair. The produced electron/positron will in turn radiate a high-energy photon via synchrotron radiation, which then initiates a cascade.…

High Energy Astrophysical Phenomena · Physics 2018-06-04 Jie-Shuang Wang , Ruo-Yu Liu , Felix Aharonian , Zi-Gao Dai

We provide analytic solutions of the net magnetic field generated by spherical and solenoidal coils enclosed in highly-permeable, coaxial magnetic shields. We consider both spherical and cylindrical shields in the case of the spherical coil…

Accelerator Physics · Physics 2020-01-08 C. -Y. Liu , T. Andalib , D. C. M. Ostapchuk , C. P. Bidinosti