Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Ganesh Tiwari"'
Autor:
Constantin Aniculaesei, Thanh Ha, Samuel Yoffe, Lance Labun, Stephen Milton, Edward McCary, Michael M. Spinks, Hernan J. Quevedo, Ou Z. Labun, Ritwik Sain, Andrea Hannasch, Rafal Zgadzaj, Isabella Pagano, Jose A. Franco-Altamirano, Martin L. Ringuette, Erhart Gaul, Scott V. Luedtke, Ganesh Tiwari, Bernhard Ersfeld, Enrico Brunetti, Hartmut Ruhl, Todd Ditmire, Sandra Bruce, Michael E. Donovan, Michael C. Downer, Dino A. Jaroszynski, Bjorn Manuel Hegelich
Publikováno v:
Matter and Radiation at Extremes, Vol 9, Iss 1, Pp 014001-014001-10 (2024)
An intense laser pulse focused onto a plasma can excite nonlinear plasma waves. Under appropriate conditions, electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic velocities. This scheme is called
Externí odkaz:
https://doaj.org/article/8d33b4259ad64cc1b9eecf5a76c93e3b
Autor:
Ganesh Tiwari
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 6, p 060701 (2023)
We revisit free-electron laser (FEL) equations in the presence of a planar undulator to investigate effects on longitudinal FEL dynamics upon seeding by a harmonic. For this study, we adopt slowly varying phase approximation, collective variables, an
Externí odkaz:
https://doaj.org/article/fe880eb484b24061adf1e065e96e9e52
Publikováno v:
PLoS ONE, Vol 17, Iss 3, p e0264676 (2022)
BackgroundAppropriate and prompt health care seeking by parents or caretakers can reduce morbidity and mortality among under-five year children. Although remarkable progress has been made in the reduction of under-five mortality, still the under-five
Externí odkaz:
https://doaj.org/article/3cb1a6bae3bd470a815dc7f70f7d18ff
Autor:
Ganesh Tiwari, Ryan R. Lindberg
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 9, p 090702 (2022)
We report on the effects of transverse spatial misalignment on the performance and stability of x-ray free electron laser oscillators (XFELOs). For this study, we adopt the FEL driven paraxial resonator model in which the transverse profile of the ra
Externí odkaz:
https://doaj.org/article/029179579b1848b5bd025a506153c51f
Autor:
Andrew Yandow, C. Grant Richmond, Hernan Quevedo, Ganesh Tiwari, Rotem Kupfer, Thanh N. Ha, Herbie Smith, B. Manuel Hegelich, Li Fang
Publikováno v:
Applied optics. 58(17)
We characterized the plasma emission produced by the interaction of multi-millijoule, 40 ns duration, mid-infrared laser pulses with a silicon surface. The laser pulses were produced by a Q-switched Ho:YLF master oscillator power amplifier system. Us
Autor:
Erhard Gaul, Rotem Kupfer, Michael E Donovan, Ganesh Tiwari, G. D. Glenn, Gilliss Dyer, T. Toncian, Luc Lisi, M. Spinks, Bjorn Hegelich, J. Gordon, E. McCary, Todd Ditmire, R. Roycroft, M. Martinez, B. Bowers, Andrew Yandow, Xuejing Jiao
When an ultrashort laser pulse is tightly focused to a size approaching its central wavelength, the properties of the focused spot diverge from the diffraction limited case. Here we report on this change in behavior of a tightly focused Petawatt clas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99491d26a80407baef2d55f9ff82c6c7
http://arxiv.org/abs/1903.00573
http://arxiv.org/abs/1903.00573
Autor:
F. H. Lindner, Peter G. Thirolf, Ganesh Tiwari, R. Roycroft, Xuejing Jiao, Tobias Ostermayr, E. McCary, Jörg Schreiber, Bjorn Hegelich
Publikováno v:
Lindner, FH; McCary, E; Jiao, X; Ostermayr, TM; Roycroft, R; Tiwari, G; et al.(2019). En-route to the fission-fusion reaction mechanism: a status update on laser-driven heavy ion acceleration. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/3h56541b
Plasma Physics and Controlled Fusion, vol 61, iss 5
Plasma Physics and Controlled Fusion
Plasma Physics and Controlled Fusion, vol 61, iss 5
Plasma Physics and Controlled Fusion
Author(s): Lindner, FH; McCary, E; Jiao, X; Ostermayr, TM; Roycroft, R; Tiwari, G; Hegelich, BM; Schreiber, J; Thirolf, PG | Abstract: The fission-fusion reaction mechanism was proposed in order to generate extremely neutron-rich nuclei close to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abd893e153aa53830c9139235e4fe2ad
http://arxiv.org/abs/1811.06720
http://arxiv.org/abs/1811.06720
Autor:
Lance Labun, Aaron C Bernstein, Michael C. Downer, Joseph M. Shaw, Luc Lisi, A. Hannasch, Ganesh Tiwari, Bjorn Hegelich
Publikováno v:
2018 IEEE Advanced Accelerator Concepts Workshop (AAC).
We present experimental results of a method that measures high flux, MeV scale x-rays produced via Thomson backscatter (TBS) of an intense laser pulse (a o ≈ 1) interacting with a counter-propagating Laser wakefield acceleration (LWFA) electron bun
Publikováno v:
Review of Scientific Instruments. 90:083304
We report the design and development of a compact electron and positron spectrometer based on tapered Neodymium Iron Boron magnets. We show that the tapered design forms a gradient magnetic field component allowing energy dependent focusing of the di