Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Calin, Ioan"'
Autor:
Hojbota, Calin Ioan, Mirzaie, Mohammad, Kim, Do Yeon, Pak, Tae Gyu, Rezaei-Pandari, Mohammad, Pathak, Vishwa Bandhu, Jeon, Jong Ho, Yoon, Jin Woo, Sung, Jae Hae, Lee, Seong Ku, Kim, Chul Min, Kim, Ki Yong, Nam, Chang Hee
Petawatt-class lasers can produce multi-GeV electron beams through laser wakefield electron acceleration. As a by-product, the accelerated electron beams can generate broad synchrotron-like radiation known as betatron radiation. In the present work,
Externí odkaz:
http://arxiv.org/abs/2211.07963
Autor:
Youhwan Noh, Jaehyun Song, Mohammad Mirzaie, Calin Ioan Hojbota, Hyeong-il Kim, Seongmin Lee, Junho Won, Hoon Song, Chiwan Song, Chang-Mo Ryu, Chang Hee Nam, Woosuk Bang
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-10 (2024)
Abstract Matter-antimatter plasmas, such as electron-positron pair plasmas, are frequently observed in various astrophysical phenomena. In laboratory settings, electron-positron pairs have often been generated using high-Z converters irradiated by ei
Externí odkaz:
https://doaj.org/article/da54644c23574a7b9f4d04e19843590c
Autor:
Mohammad Rezaei-Pandari, Mohammad Mirzaie, Calin Ioan Hojbota, Ali Reza Niknam, Reza Massudi, Ki-Yong Kim, Chang Hee Nam
Publikováno v:
AIP Advances, Vol 14, Iss 2, Pp 025347-025347-8 (2024)
We investigate the generation of terahertz (THz) radiation from laser-wakefield acceleration (LWFA) in a helium gas jet. We consider a three-dimensional setup incorporating a realistic gas density distribution and use particle-in-cell simulations to
Externí odkaz:
https://doaj.org/article/39eb776921974b068e8e528648512e9c
Autor:
Gheorghiu, Calin-Ioan
We are concerned with the study of some classical spectral collocation methods as well as with the new software system Chebfun in computing high order eigenpairs of singular and regular Schrodinger eigenproblems. We want to highlight both the qualit
Externí odkaz:
http://arxiv.org/abs/2011.14920
Autor:
Gheorghiu, Calin-Ioan
We solve by Chebyshev spectral collocation some genuinely nonlinear Liouville-Bratu-Gelfand type, 1D and a 2D boundary value problems. The problems are formulated on the square domain $[-1, 1]\times[-1, 1]$ and the boundary condition attached is a ho
Externí odkaz:
http://arxiv.org/abs/2011.13212
Autor:
Gheorghiu, Calin-Ioan
We comparatively use some classical spectral collocation methods as well as highly performing Chebfun algorithms in order to compute the eigenpairs of second order singular Sturm-Liouville problems with separated self-adjoint boundary conditions. For
Externí odkaz:
http://arxiv.org/abs/2012.01341
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Hojbota, Calin Ioan, Kim, Hyung Taek, Shin, Jung Hun, Aniculaesei, Constantin, Rao, Bobbili Sanyasi, Nam, Chang Hee
We present a technique, based on a dipole magnet spectrometer containing multiple scintillation screens, to accurately characterize the spectral distribution of a GeV electron beam generated by laser wakefield acceleration (LWFA). An optimization alg
Externí odkaz:
http://arxiv.org/abs/1907.02239
Autor:
Aniculaesei, Constantin, Pathak, Vishwa Bandhu, Oh, Kyung Hwan, Hojbota, Calin Ioan, Singh, Prashant Kumar, Lee, Bo Ram, Kim, Hyung Taek, Brunetti, Enrico, Yoo, Byung Ju, Sung, Jae Hee, Lee, Seong Ku, Nam, Chang Hee
Publikováno v:
Phys. Rev. Applied 12, 044041 (2019)
In the present work, we demonstrate for the first time a proof-of-principle experiment for nanoparticle-assisted laser wakefield acceleration. The nanoparticles, generated through laser ablation of aluminium, were introduced into the plasma and used
Externí odkaz:
http://arxiv.org/abs/1902.00921
Autor:
Taegyu Pak, Mohammad Rezaei-Pandari, Sang Beom Kim, Geonwoo Lee, Dae Hee Wi, Calin Ioan Hojbota, Mohammad Mirzaie, Hyeongmun Kim, Jae Hee Sung, Seong Ku Lee, Chul Kang, Ki-Yong Kim
Publikováno v:
Light: Science & Applications, Vol 12, Iss 1, Pp 1-11 (2023)
The electrons, accelerated by the laser ponderomotive force and subsequent plasma wakefields, radiate broadband emission continuously along the laser propagation direction, resulting in multi-mJ THz radiation in the far field.
Externí odkaz:
https://doaj.org/article/facf31a2fb2049e983fd6e51d0c281c3