Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Feder L"'
Autor:
Picksley, A., Chappell, J., Archer, E., Bourgeois, N., Cowley, J., Emerson, D. R., Feder, L., Gu, X. J., Jakobsson, O., Ross, A. J., Wang, W., Walczak, R., Hooker, S. M.
We describe a simple scheme, truncated-channel injection, to inject electrons directly into the wakefield driven by a drive pulse guided by an all-optical plasma channel. We use this approach to generate dark-current-free 1.2 GeV, 4.5 % relative ener
Externí odkaz:
http://arxiv.org/abs/2307.13689
Bessel beams generated with non-ideal axicons are affected by aberrations. We introduce a method to retrieve the complex amplitude of a Bessel beam from intensity measurements alone, and then use this information to correct the wavefront and intensit
Externí odkaz:
http://arxiv.org/abs/2201.09964
Autor:
Miao, B., Shrock, J. E., Feder, L., Hollinger, R. C., Morrison, J., Nedbailo, R., Picksley, A., Song, H., Wang, S., Rocca, J. J., Milchberg, H. M.
We present the first demonstration of multi-GeV laser wakefield acceleration in a fully optically formed plasma waveguide, with an acceleration gradient as high as 25 GeV/m. The guide was formed via self-waveguiding of <15 J, 45 fs (<~300 TW) pulses
Externí odkaz:
http://arxiv.org/abs/2112.03489
Publikováno v:
Phys. Rev. Research 2, 043173 (2020)
We demonstrate that an ultrashort high intensity laser pulse can propagate for hundreds of Rayleigh ranges in a prepared neutral hydrogen channel by generating its own plasma waveguide as it propagates; the front of the pulse generates a waveguide th
Externí odkaz:
http://arxiv.org/abs/2008.06771
Autor:
Picksley, A., Alejo, A., Cowley, J., Bourgeois, N., Corner, L., Feder, L., Holloway, J., Jones, H., Jonnerby, J., Milchberg, H. M., Reid, L. R., Ross, A. J., Walczak, R., Hooker, S. M.
Publikováno v:
Phys. Rev. Accel. Beams 23, 081303 (2020)
Hydrodynamic optically-field-ionized (HOFI) plasma channels up to 100mm long are investigated. Optical guiding is demonstrated of laser pulses with a peak input intensity of $6\times10^{17}$ W cm$^{-2}$ through 100mm long plasma channels with on-axis
Externí odkaz:
http://arxiv.org/abs/2006.00810
Publikováno v:
Phys. Rev. Lett. 125, 074801 (2020)
We demonstrate a new highly tunable technique for generating meter-scale low density plasma waveguides. Such guides can enable electron acceleration to tens of GeV in a single stage. Plasma waveguides are imprinted in hydrogen gas by optical field io
Externí odkaz:
http://arxiv.org/abs/2005.14389
Autor:
Miao, B., Feder, L., Elle, J., Goers, A. J., Woodbury, D., Salehi, F., Wahlstrand, J. K., Milchberg, H. M.
Publikováno v:
Phys. Rev. E 98, 043206 (2018)
The injection of electrons into a laser wakefield accelerator (LWFA) is observed to generate an intense coherent ultra-broadband and ultrashort pulse radiation flash, consistent with the acceleration of electrons from rest to nearly the speed of ligh
Externí odkaz:
http://arxiv.org/abs/1807.04165
Autor:
Woodbury, D., Feder, L., Shumakova, V., Gollner, C., Schwartz, R., Miao, B., Salehi, F., Korolov, A., Pugžlys, A., Baltuška, A., Milchberg, H. M.
We report on the first results of laser plasma wakefield acceleration driven by ultrashort mid-infrared laser pulses (\lambda= 3.9 \mu m, 100 fs, 0.25 TW), which enable near- and above-critical density interactions with moderate-density gas jets. Rel
Externí odkaz:
http://arxiv.org/abs/1801.05241
Autor:
Salehi, F., Goers, A. J., Hine, G. A., Feder, L., Kuk, D., Miao, B., Woodbury, D., Kim, K. Y., Milchberg, H. M.
We demonstrate laser driven acceleration of electrons to MeV-scale energies at 1kHz repetition rate using <10mJ pulses focused on near-critical density He and H2 gas jets. Using the H2 gas jet, electron acceleration to ~0.5MeV in ~10fC bunches was ob
Externí odkaz:
http://arxiv.org/abs/1610.03739
Publikováno v:
Phys. Rev. Lett. 115, 194802 (2015)
We demonstrate laser-plasma acceleration of high charge electron beams to the ~10 MeV scale using ultrashort laser pulses with as little energy as 10 mJ. This result is made possible by an extremely dense and thin hydrogen gas jet. Total charge up to
Externí odkaz:
http://arxiv.org/abs/1506.02912