Zobrazeno 1 - 10
of 467
pro vyhledávání: '"Romagnani, L."'
Experimental characterisation of a single-shot spectrometer for high-flux, GeV-scale gamma-ray beams
Autor:
Cavanagh, N., Fleck, K., Streeter, M. J. V., Gerstmayr, E., Dickson, L. T., Ballage, C., Cadas, R., Calvin, L., Dufrénoy, S. Dobosz, Moulanier, I., Romagnani, L., Vasilovici, O., Whitehead, A., Specka, A., Cros, B., Sarri, G.
Publikováno v:
Phys. Rev. Research 5, 043046 (2023)
We report on the first experimental characterisation of a gamma-ray spectrometer designed to spectrally resolve high-flux photon beams with energies in the GeV range. The spectrometer has been experimentally characterised using a bremsstrahlung sourc
Externí odkaz:
http://arxiv.org/abs/2305.02221
Autor:
Marquès, J. -R., Loiseau, P., Bonvalet, J., Tarisien, M., d'Humières, E., Domange, J., Hannachi, F., Lancia, L., Larroche, O., Puyuelo-Valdes, P. Nicolaï P., Romagnani, L., Santos, J., Tikhonchuk, V.
The generation of thin and high density plasma slabs at high repetition rate is a key issue for ultra-high intensity laser applications. We present a scheme to create such plasma slabs, based on the propagation and collision in a gas jet of two count
Externí odkaz:
http://arxiv.org/abs/2009.14770
Autor:
Milluzzo, G., Scuderi, V., Alejo, A., Amico, A. G., Booth, N., Borghesi, M., Cirrone, G. A. P., Cuttone, G., Doria, D., Green, J., Kar, S., Korn, G., Larosa, G., Leanza, R., Margarone, D., Martin, P., McKenna, P., Petringa, G., Pipek, J., Romagnani, L., Romano, F., Russo, A., Schillaci, F.
The Time-of-Flight (ToF) technique coupled with semiconductor-like detectors, as silicon carbide and diamond, is one of the most promising diagnostic methods for high-energy, high repetition rate, laser-accelerated ions allowing a full on-line beam s
Externí odkaz:
http://arxiv.org/abs/1812.01357
Autor:
Dieckmann, M E, Moreno, Q, Doria, D, Romagnani, L, Sarri, G, Folini, D, Walder, R, Bret, A, d'Humieres, E, Borghesi, M
The expansion of a thermal pressure-driven radial blast shell into a dilute ambient plasma is examined with two-dimensional PIC simulations. The purpose is to determine if laminar shocks form in a collisionless plasma that resemble their magnetohydro
Externí odkaz:
http://arxiv.org/abs/1805.02875
Autor:
Warwick, J. R., Alejo, A., Dzelzainis, T., Schumaker, W., Doria, D., Romagnani, L., Poder, K., Cole, J. M., Yeung, M., Krushelnick, K., Mangles, S. P. D., Najmudin, Z., Samarin, G. M., Symes, D., Thomas, A. G. R., Borghesi, M ., Sarri, G.
The experimental study of the dynamics of neutral electron-positron beams is an emerging area of research, enabled by the recent results on the generation of this exotic state of matter in the laboratory. Electron-positron beams and plasmas are belie
Externí odkaz:
http://arxiv.org/abs/1802.01394
Autor:
Dieckmann, M E, Folini, D, Walder, R, Romagnani, L, d'Humieres, E, Bret, A, Karlsson, T, Ynnerman, A
The expansion of a dense plasma into a dilute plasma across an initially uniform perpendicular magnetic field is followed with a one-dimensional particle-in-cell (PIC) simulation over MHD time scales. The dense plasma expands in the form of a fast ra
Externí odkaz:
http://arxiv.org/abs/1708.07993
Autor:
Dieckmann, M E, Doria, D, Ahmed, H, Romagnani, L, Sarri, G, Folini, D, Walder, R, Bret, A, Borghesi, M
The expansion of a radial blast shell into an ambient plasma is modeled with a particle-in-cell (PIC) simulation. The unmagnetized plasma consists of electrons and protons. The formation and evolution of an electrostatic shock is observed, which is t
Externí odkaz:
http://arxiv.org/abs/1708.07991
Autor:
Antici, P., Boella, E., Chen, S. N., Andrews, D. S., Barberio, M., Böker, J., Cardelli, F., Feugeas, J. L., Glesser, M., Nicolaï, P., Romagnani, L., Sciscio, M., Starodubtsev, M., Willi, O., Kieffer, J. C., Tikhonchuk, V., Pépin, H., Silva, L. O., Humières, E. d, Fuchs, J.
A new type of proton acceleration stemming from large-scale gradients, low-density targets, irradiated by an intense near-infrared laser is observed. The produced protons are characterized by high-energies (with a broad spectrum), are emitted in a ve
Externí odkaz:
http://arxiv.org/abs/1708.02539
Autor:
Warwick, J., Dzelzainis, T., Dieckmann, M. E., Schumacker, W., Doria, D., Romagnani, L., Poder, K., Cole, J. M., Alejo, A., Yeung, M., Krushelnick, K., Mangles, S. P. D., Najmudin, Z., Reville, B., Samarin, G. M., Symes, D., Thomas, A. G. R., Borghesi, M., Sarri, G.
Publikováno v:
Phys. Rev. Lett. 119, 185002 (2017)
We report on the first experimental observation of a current-driven instability developing in a quasi-neutral matter-antimatter beam. Strong magnetic fields ($\geq$ 1 T) are measured, via means of a proton radiography technique, after the propagation
Externí odkaz:
http://arxiv.org/abs/1705.08162
Autor:
Dromey, B., Stella, L., Adams, D., Prasad, R., Kakolee, K. F., Stefanuik, R., Nersisyan, G, Sarri, G., Yeung, M., Ahmed, H., Doria, D., Dzelzainis, T., Jung, D., Kar, S., Marlow, D., Romagnani, L., Correa, A. A., Dunne, P., Kohanoff, J., Schleife, A., Borghesi, M., Currell, F., Riley, D., Zepf, M., Lewis, C. L. S.
Direct investigation of ion-induced dynamics in matter on picosecond (ps, 10-12 s) timescales has been precluded to date by the relatively long nanosecond (ns, 10-9 s) scale ion pulses typically provided by radiofrequency accelerators1. By contrast,
Externí odkaz:
http://arxiv.org/abs/1412.1327