Zobrazeno 1 - 10
of 160
pro vyhledávání: '"L. O. SILVA"'
Autor:
C. D. Arrowsmith, P. Simon, P. J. Bilbao, A. F. A. Bott, S. Burger, H. Chen, F. D. Cruz, T. Davenne, I. Efthymiopoulos, D. H. Froula, A. Goillot, J. T. Gudmundsson, D. Haberberger, J. W. D. Halliday, T. Hodge, B. T. Huffman, S. Iaquinta, F. Miniati, B. Reville, S. Sarkar, A. A. Schekochihin, L. O. Silva, R. Simpson, V. Stergiou, R. M. G. M. Trines, T. Vieu, N. Charitonidis, R. Bingham, G. Gregori
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black-hole and neutron-star magnetospheres, where accretion-powered jets and pulsar winds are expected to be enriched with electron-positron
Externí odkaz:
https://doaj.org/article/79df53dc9ee047499e517f72b1711532
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
Abstract We propose an all-optical dual-stage laser wakefield acceleration (LWFA), staged with co-propagating two-color laser pulses in a plasma medium, to enhance the electron bunch energy. After the depletion of the leading fundamental laser pulse
Externí odkaz:
https://doaj.org/article/9c30b700e73242a0a7b59eaeb57edb34
Autor:
C. D. Arrowsmith, N. Shukla, N. Charitonidis, R. Boni, H. Chen, T. Davenne, A. Dyson, D. H. Froula, J. T. Gudmundsson, B. T. Huffman, Y. Kadi, B. Reville, S. Richardson, S. Sarkar, J. L. Shaw, L. O. Silva, P. Simon, R. M. G. M. Trines, R. Bingham, G. Gregori
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023103 (2021)
An experimental scheme is presented for generating low-divergence, ultradense, relativistic, electron-positron beams using 400 GeV/c protons available at facilities such as HiRadMat and AWAKE at CERN. Preliminary Monte Carlo and particle-in-cell simu
Externí odkaz:
https://doaj.org/article/e31c19bafebc44a689b2145e9d3d0730
Autor:
J. Vieira, R. M. G. M. Trines, E. P. Alves, R. A. Fonseca, J. T. Mendonça, R. Bingham, P. Norreys, L. O. Silva
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
High intensity light with a non-zero orbital angular momentum could aid the development of laser-wakefield particle accelerators. Here, the authors theoretically show that stimulated Raman backscattering in plasmas can generate and amplify orbital an
Externí odkaz:
https://doaj.org/article/fd1e0f3287ea4cf38e8c363c8bb4d60a
Autor:
K. M. Schoeffler, L. O. Silva
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033233 (2020)
The expansion of plasma with nonparallel temperature and density gradients and the generation of a magnetic field via the Biermann battery is modeled using particle-in-cell simulations that include collisional effects via Monte Carlo methods. A scali
Externí odkaz:
https://doaj.org/article/dd0575d6dcdc46e08d66c6f7d601ca09
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023129 (2020)
Our setup allows the Weibel instability and its interplay with the Biermann battery to be probed in laser-driven collisionless plasmas. Ab initio particle-in-cell simulations of the interaction of short (≤1ps) intense (a_{0}≥1) laser pulses with
Externí odkaz:
https://doaj.org/article/6ed5e38b320e4b92a8dea3e7ba5c346b
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023080 (2020)
We identify a mechanism for magnetic field generation in the interaction of intense electromagnetic waves and underdense plasmas. We show that Raman scattered plasma waves trap and heat the electrons preferentially in their propagation direction, res
Externí odkaz:
https://doaj.org/article/94b2045abfd3498eaa56632a3e5ac7f6
Publikováno v:
Brazilian Journal of Biology, Iss 0 (2018)
Abstract The properties of maize pollen in the diet of Doru luteipes were determined by biological responses of the predator feeding on natural preys and artificial diet. The biological parameters of D. luteipes fed on Spodoptera frugiperda (Smith, 1
Externí odkaz:
https://doaj.org/article/5710f29f968d4522bef07caa74a01372
Autor:
M. W. Mayr, L. Ceurvorst, M. F. Kasim, J. D. Sadler, B. Spiers, K. Glize, A. F. Savin, N. Bourgeois, F. Keeble, A. J. Ross, D. R. Symes, R. Aboushelbaya, R. A. Fonseca, J. Holloway, N. Ratan, R. M. G. M. Trines, R. H. W. Wang, R. Bingham, L. O. Silva, P. N. Burrows, M. Wing, P. P. Rajeev, P. A. Norreys
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 11, p 113501 (2019)
We report the first comprehensive study of large amplitude Langmuir waves in a plasma of nanometer-scale clusters. Using an oblique angle single-shot frequency domain holography diagnostic, the shape of these wakefields is captured for the first time
Externí odkaz:
https://doaj.org/article/59f7920d9e324b0caf5b5b78299ede78
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 2, p 023402 (2019)
The collision of ultrashort high-density e^{-} or e^{-} and e^{+} beams at 10s of GeV, to be available at the FACET II and in laser wakefield accelerator experiments, can produce highly collimated γ rays (few GeVs) with peak brilliance of 10^{27} ph
Externí odkaz:
https://doaj.org/article/5c694a1ca095413688b331abcb1a4197