Zobrazeno 1 - 10
of 388
pro vyhledávání: '"Spezzani, C"'
Autor:
Brynes, A. D., Perosa, G., Tsai, C. -Y., Allaria, E., Badano, L., De Ninno, G., Ferrari, E., Garzella, D., Giannessi, L., Penco, G., Ribič, P. Rebernik, Roussel, E., Spampinati, S., Spezzani, C., Trovò, M., Veronese, M., Di Mitri, S.
The microbunching instability has been a long-standing issue for high-brightness free-electron lasers (FELs), and is a significant show-stopper to achieving full longitudinal coherence in the x-ray regime. This paper reports the first experimental de
Externí odkaz:
http://arxiv.org/abs/2403.11594
Autor:
LaForge, AC, Benediktovitch, A, Sukharnikov, V, Krušič, Š, Žitnik, M, Debatin, M, Falcone, RW, Asmussen, JD, Mudrich, M, Michiels, R, Stienkemeier, F, Badano, L, Callegari, C, Di Fraia, M, Ferianis, M, Giannessi, L, Plekan, O, Prince, KC, Spezzani, C, Rohringer, N, Berrah, N
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 53 244012 (2020)
We report on the observation of time-resolved quantum beats in the helium fluorescence from the transition 1s3p -> 1s2s, where the initial state is excited by XUV free-electron laser radiation. The quantum beats originate from the Zeeman splitting of
Externí odkaz:
http://arxiv.org/abs/2112.08508
Autor:
Mirian, N. S., Perosa, G., Hemsing, E., Allaria, E., Badano, L., Cinquegrana, P., Danailov, M. B., De Ninno, G., Giannessi, L., Penco, G., Spampinati, S., Spezzani, C., Roussel, E., Ribic, P. R., Trovo, M., Veronese, M., Di Mitri, S.
Publikováno v:
Phys. Rev. Accel. Beams 24, 080702 (2021)
Echo-enabled harmonic generation free-electron lasers (EEHG FELs) are promising candidates to produce fully coherent soft x-ray pulses by virtue of efficient high harmonic frequency up-conversion from UV lasers. The ultimate spectral limit of EEHG, h
Externí odkaz:
http://arxiv.org/abs/2106.04161
Autor:
Brynes, A. D., Akkermans, I., Allaria, E., Badano, L., Brussaard, S., Danailov, M., Demidovich, A., De Ninno, G., Giannessi, L., Mirian, N. S., Penco, G., Perosa, G., Ribič, P. Rebernik, Roussel, E., Setija, I., Smorenburg, P., Spampinati, S., Spezzani, C., Trovò, M., Williams, P. H., Wolski, A., Di Mitri, S.
High-brightness electron bunches, such as those generated and accelerated in free-electron lasers (FELs), can develop small-scale structure in the longitudinal phase space. This causes variations in the slice energy spread and current profile of the
Externí odkaz:
http://arxiv.org/abs/2010.00252
Autor:
Delia, A., Rezvani, S. J., Zema, N., Zuccaro, F., Fanetti, M., Belec, Blaz, Li, B. W., Zou, C. W., Spezzani, C., Sacchi, M., Marcelli, A., Coreno, M.
We present and discuss an original method to synthesize disordered Nanostructured (NS) VO$_x$ films with controlled stoichiometry and tunable electronic structures. In these NS films, the original lattice symmetry of the bulk vanadium oxides is broke
Externí odkaz:
http://arxiv.org/abs/2004.07042
Akademický článek
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Autor:
Takanashi, T., Golubev, N. V., Callegari, C., Fukuzawa, H., Motomura, K., Iablonskyi, D., Kumagai, Y., Mondal, S., Tachibana, T., Nagaya, K., Nishiyama, T., Matsunami, K., Johnsson, P., Piseri, P., Sansone, G., Dubrouil, A., Reduzzi, M., Carpeggiani, P., Vozzi, C., Devetta, M., Negro, M., Faccialà, D., Calegari, F., Trabattoni, A., Castrovilli, M. C., Ovcharenko, Y., Mudrich, M., Stienkemeier, F., Coreno, M., Alagia, M., Schütte, B., Berrah, N., Plekan, O., Finetti, P., Spezzani, C., Ferrari, E., Allaria, E., Penco, G., Serpico, C., De Ninno, G., Diviacco, B., Di Mitri, S., Giannessi, L., Jabbari, G., Prince, K. C., Cederbaum, L. S., Demekhin, Ph. V., Kuleff, A. I., Ueda, K.
The hitherto unexplored two-photon doubly-excited states [Ne$^{*}$($2p^{-1}3s$)]$_{2}$ were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet free-electron laser FERMI. These states undergo ultrafast interatomic
Externí odkaz:
http://arxiv.org/abs/1902.09882
Autor:
Brynes, A. D., Smorenburg, P., Akkermans, I., Allaria, E., Badano, L., Brussaard, S., Danailov, M., Demidovich, A., De Ninno, G., Gauthier, D., Gaio, G., van der Geer, S. B., Giannessi, L., de Loos, M. J., Mirian, N. S., Penco, G., Rebernik, P., Rossi, F., Setija, I., Spampinati, S., Spezzani, C., Trovò, M., Williams, P. H., DiMitri, S.
An understanding of collective effects is of fundamental importance for the design and optimisation of the performance of modern accelerators. In particular, the design of an accelerator with strict requirements on the beam quality, such as a free el
Externí odkaz:
http://arxiv.org/abs/1805.05702
Autor:
Gauthier, D., Ribič, P. Rebernik, Adhikary, G., Camper, A., Chappuis, C., Cucini, R., DiMauro, L. F., Dovillaire, G., Frassetto, F., Géneaux, R., Miotti, P., Poletto, L., Ressel, B., Spezzani, C., Stupar, M., Ruchon, T., De Ninno, G.
Optical vortices are currently one of the most intensively studied topics in optics. These light beams, which carry orbital angular momentum (OAM), have been successfully utilized in the visible and infrared in a wide variety of applications. Moving
Externí odkaz:
http://arxiv.org/abs/1608.06907
Autor:
Grazioli, C., Callegari, C., Ciavardini, A., Coreno, M., Frassetto, F., Gauthier, D., Golob, D., Ivanov, R., Kivimäki, A., Mahieu, B., Bucar, Bojan, Merhar, M., Miotti, P., Poletto, L., Polo, E., Ressel, B., Spezzani, C., De Ninno, G.
We present the main features of CITIUS, a new light source for ultrafast science, generating tunable, intense, femtosecond pulses in the spectral range from IR to XUV. The XUV pulses (about 10^5-10^8 photons/pulse in the range 14-80 eV) are produced
Externí odkaz:
http://arxiv.org/abs/1310.3355