Zobrazeno 1 - 10
of 762
pro vyhledávání: '"G. Blackburn"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-9 (2023)
Abstract By combining an adiabatic approach based on a ‘locally monochromatic’ approximation with a local Hilbert transform, it is demonstrated how vacuum birefringence in the strong field regime can be calculated using a rate approach suitable f
Externí odkaz:
https://doaj.org/article/53ec35ec8736444782132b2312455e55
Autor:
Feiko Miedema, Nicole Klein, Daniel G. Blackburn, P. Martin Sander, Erin E. Maxwell, Eva M. Griebeler, Torsten M. Scheyer
Publikováno v:
BMC Ecology and Evolution, Vol 23, Iss 1, Pp 1-13 (2023)
Abstract According to a longstanding paradigm, aquatic amniotes, including the Mesozoic marine reptile group Ichthyopterygia, give birth tail-first because head-first birth leads to increased asphyxiation risk of the fetus in the aquatic environment.
Externí odkaz:
https://doaj.org/article/59577c107d2643fc9f7860271ea666a0
Publikováno v:
Актуальные проблемы филологии и педагогической лингвистики, Iss 4, Pp 17-34 (2022)
Scholars across disciplines have long debated the existence of a common structure that underlies narratives. Using computer-based language analysis methods, several structural and psychological categories of language were measured across ~40,000 trad
Externí odkaz:
https://doaj.org/article/6b8387f7a58b4e068474f5613528e693
Autor:
J. Magnusson, T. G. Blackburn, E. Gerstmayr, E. E. Los, M. Marklund, C. P. Ridgers, S. P. D. Mangles
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 10, p 104002 (2023)
Current experiments investigating radiation reaction employ high energy electron beams together with tightly focused laser pulses in order to reach the quantum regime, as expressed through the quantum nonlinearity parameter χ. Such experiments are o
Externí odkaz:
https://doaj.org/article/eb66f20ea34348128c99db4841184cba
Autor:
T. G. Blackburn, B. King
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 1, Pp 1-16 (2022)
Abstract When a photon collides with a laser pulse, an electron-positron pair can be produced via the nonlinear Breit–Wheeler process. A simulation framework has been developed to calculate this process, which is based on a ponderomotive approach t
Externí odkaz:
https://doaj.org/article/7d6a76cc6bf34411b5c3e8d0de592161
Publikováno v:
High Power Laser Science and Engineering, Vol 11 (2023)
The availability of ever stronger, laser-generated electromagnetic fields underpins continuing progress in the study and application of nonlinear phenomena in basic physical systems, ranging from molecules and atoms to relativistic plasmas and quantu
Externí odkaz:
https://doaj.org/article/223cff46d6ba4e83b5aae623dcd160cd
Publikováno v:
Communications Physics, Vol 4, Iss 1, Pp 1-9 (2021)
Electron-positron pair generation from nonlinear quantum electrodynamics is predicted at high intensities that are, so far, beyond experimental capabilities. Here, simulations predict a high yield of positrons can be obtained from gamma-gamma photon
Externí odkaz:
https://doaj.org/article/d5c16c035ee242b88569153aa7876876
Autor:
Ashrit Multani, Aabed Meer, Darvin S. Smith, Malika N. Kheraj, Edward D. Plowey, Brian G. Blackburn
Publikováno v:
Emerging Infectious Diseases, Vol 25, Iss 7, Pp 1370-1372 (2019)
We report a case of chagasic encephalitis diagnosed by 28S rRNA sequencing. The diagnosis of chagasic encephalitis is challenging, given the broad differential diagnosis for central nervous system lesions in immunocompromised patients and low sensiti
Externí odkaz:
https://doaj.org/article/2b5c4809ca4c44d58820a1194bd46e2c
Autor:
L E Bradley, M J V Streeter, C D Murphy, C Arran, T G Blackburn, M Galletti, S P D Mangles, C P Ridgers
Publikováno v:
New Journal of Physics, Vol 23, Iss 9, p 095004 (2021)
Recent high-intensity laser experiments (Cole et al 2018 Phys. Rev. X 8 011020; Poder et al 2018 Phys. Rev. X 8 031004) have shown evidence of strong radiation reaction in the quantum regime. Experimental evidence of quantum effects on radiation reac
Externí odkaz:
https://doaj.org/article/ad488278a0884afaa5454c1d7e7d3479
Publikováno v:
New Journal of Physics, Vol 23, Iss 8, p 085008 (2021)
State-of-the-art numerical simulations of quantum electrodynamical (QED) processes in strong laser fields rely on a semiclassical combination of classical equations of motion and QED rates, which are calculated in the locally constant field approxima
Externí odkaz:
https://doaj.org/article/5ec62cf3eecc4f35b1d2113b631b901e