Results 31 to 40 of about 50,113 (163)

Observation of 99Mo radioactivity produced in natural molybdenum irradiated with an electron beam from a linear industrial accelerator

Nukleonika
The authors present the first observation of the production of 99Mo using a direct electron beam obtained from an electron linear accelerator in the 10–20 MeV energy region.
Zawistowski Tobiasz, Wronka Sławomir, Adrich Przemysław, Chabera Mariusz, Cieszykowska Izabela, Janiak Tomasz, Kosiński Tymoteusz, Matusiak Michał   +7 more
doaj   +1 more source

A Model for Nonthermal Particle Acceleration in Relativistic Magnetic Reconnection

The Astrophysical Journal Letters, 2023
The past decade has seen an outstanding development of nonthermal particle acceleration in magnetic reconnection in magnetically dominated systems, with clear signatures of power-law energy distributions as a common outcome of first-principles kinetic ...
Xiaocan Li, Fan Guo, Yi-Hsin Liu, Hui Li
doaj   +1 more source

Active Galactic Nuclei as Potential Sources of Ultra-High Energy Cosmic Rays

Universe, 2022
Active Galactic Nuclei (AGNs) and their relativistic jets belong to the most promising class of ultra-high-energy cosmic ray (UHECR) accelerators. This compact review summarises basic experimental findings by recent instruments, and discusses possible ...
Frank M. Rieger
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Solar Particle Acceleration

Astronomy
High-energy particles may be accelerated widely in stellar coronae; probably by the same processes we find in the Sun. Here, we have learned of two physical mechanisms that dominate the acceleration of solar energetic particles (SEPs).
Donald V. Reames
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Particle acceleration in subcycle optical cells

Physical Review Special Topics. Accelerators and Beams, 2014
A single laser pulse with spot size smaller than half its wavelength (w_{0}
F. Terranova
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Particles in Relativistic MHD Jets. I. Role of Jet Dynamics in Particle Acceleration

The Astrophysical Journal, 2023
Relativistic jets from (supermassive) black holes are typically observed in nonthermal emission, caused by highly relativistic electrons. Here, we study the interrelation between three-dimensional (special) relativistic magnetohydrodynamics, and particle
Ravi Pratap Dubey, Christian Fendt, Bhargav Vaidya   +2 more
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Characterizing Particle-Scale Acceleration of Mud-Pumping Ballast Bed of Heavy-Haul Railway Subjected to Maintenance Operations

Sensors, 2022
Fouling and mud-pumping problems in ballasted track significantly degrade serviceability and jeopardize train operational safety. The phenomenological approaches for post hoc forensic investigation and remedies of mud pumps have relatively been well ...
Meng Wang, Yuanjie Xiao, Wenqi Li, Hongjun Zhao, Wenjun Hua, Yu Jiang   +5 more
doaj   +1 more source

Nonlinear interaction of charged particles with strong laser pulses in a magnetic undulator

Physical Review Special Topics. Accelerators and Beams, 2010
Laser acceleration due to the nonlinear-threshold phenomena of charged particle “reflection” and capture by slowed wave in a magnetic undulator is considered. The obtained numerical results prove the particle reflection and capture phenomena in the field
H. K. Avetissian, Kh. V. Sedrakian
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Spin and Maximal Acceleration

Galaxies, 2017
We study the spin current tensor of a Dirac particle at accelerations close to the upper limit introduced by Caianiello. Continual interchange between particle spin and angular momentum is possible only when the acceleration is time-dependent.
Giorgio Papini
doaj   +1 more source

Radiative Relativistic Turbulence as an In Situ Pair-plasma Source in Blazar Jets

The Astrophysical Journal
As powerful gamma-ray engines, blazars—relativistic plasma jets launched toward Earth from active galactic nuclei—are manifestly high-energy particle accelerators.
John M. Mehlhaff, Muni Zhou, Vladimir Zhdankin   +2 more
doaj   +1 more source