MOLDONADO, EDISON P.SAMAD, RICARDO E.ZUFFI, ARMANDO V.F.SANTOS, JHONATHA R. dosVIEIRA JUNIOR, NILSON D.2024-02-082024-02-082023MOLDONADO, EDISON P.; SAMAD, RICARDO E.; ZUFFI, ARMANDO V.F.; SANTOS, JHONATHA R. dos; VIEIRA JUNIOR, NILSON D. Impact of He+N2 concentration on self-modulated laser wakefield acceleration driven by pulses of a few TW. <b>Journal of the Optical Society of America B</b>, v. 40, n. 4, p. C141-C147, 2023. DOI: <a href="https://dx.doi.org/10.1364/JOSAB.482305">10.1364/JOSAB.482305</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/34594.0740-3224http://repositorio.ipen.br/handle/123456789/34594Laser wakefield electron acceleration with ionization injection has rarely been studied in the low-power, selfmodulated case. We performed simulations of such regimes using a mixture of He and N2 gases and driven by laser pulses with peak powers around 1 TW. Analyses show the generation of electron bunches with an average energy of up to 70 MeV, an energy spread as low as 18%, and an emittance as good as a fraction of a mm mrad. The obtained electron beam parameters lead to several trade-offs as a function of N2 concentration, allowing for many different designs.C141-C147openAccesslaserswakefield acceleratorsaccelerationheliumnitrogengasesionizationinjectionArtigo de periódico44010.1364/JOSAB.4823050000-0003-0092-93570000-0001-7762-8961https://orcid.org/0000-0003-0092-9357https://orcid.org/0000-0001-7762-896143.361.00