Ultra-intense lasers can nowadays routinely accelerate kiloampere ion beams. These unique sources of particle beams could impact many societal (e.g., proton-therapy or fuel recycling) and fundamental (e.g., neutron probing) domains. However, this requires overcoming the beam angular divergence at the source. This has been attempted, either with large-scale conventional setups or with compact plasma techniques that however have the restriction of short (<1 mm) focusing distances or a chromatic behavior. Here, we show that exploiting laser-triggered, long-lasting (>50 ps), thermoelectric multi-megagauss surface magnetic (B)-fields, compact capturing, and focusing of a diverging laser-driven multi-MeV ion beam can be achieved over a wide range of ion energies in the limit of a 5° acceptance angle.
A compact broadband ion beam focusing device based on laser-driven megagauss thermoelectric magnetic fields / Albertazzi, B., D'Humières, E., Lancia, L., Dervieux, V., Antici, P., Böcker, J., Bonlie, J., Breil, J., Cauble, B., Chen, S.N., Feugeas, J.L., Nakatsutsumi, M., Nicolaï, P., Romagnani, L., Shepherd, R., Sentoku, Y., Swantusch, M., Tikhonchuk, V.T., Borghesi, M., Willi, O., et al.. - In: REVIEW OF SCIENTIFIC INSTRUMENTS ONLINE. - ISSN 1089-7623. - STAMPA. - 86:4(2015), p. 043502. [10.1063/1.4917273]
A compact broadband ion beam focusing device based on laser-driven megagauss thermoelectric magnetic fields
Antici, P;
2015
Abstract
Ultra-intense lasers can nowadays routinely accelerate kiloampere ion beams. These unique sources of particle beams could impact many societal (e.g., proton-therapy or fuel recycling) and fundamental (e.g., neutron probing) domains. However, this requires overcoming the beam angular divergence at the source. This has been attempted, either with large-scale conventional setups or with compact plasma techniques that however have the restriction of short (<1 mm) focusing distances or a chromatic behavior. Here, we show that exploiting laser-triggered, long-lasting (>50 ps), thermoelectric multi-megagauss surface magnetic (B)-fields, compact capturing, and focusing of a diverging laser-driven multi-MeV ion beam can be achieved over a wide range of ion energies in the limit of a 5° acceptance angle.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
