TY  - JOUR
A1  - Polz, Jens
A1  - Robinson, Alexander P. L.
A1  - Kalinin, Anton
A1  - Becker, Georg Alexander
A1  - Costa Fraga, Rui Alexandre
A1  - Hellwing, Marco
A1  - Hornung, Marco
A1  - Keppler, Sebastian
A1  - Kessler, Alexander
A1  - Klöpfel, Diethard
A1  - Liebetrau, Hartmut
A1  - Schorcht, Frank
A1  - Hein, Joachim
A1  - Zepf, Matthäus
A1  - Grisenti, Robert Evaristo
A1  - Kaluza, Malte Christoph
T1  - Efficient laser-driven proton acceleration from a cryogenic solid hydrogen target
T2  - Scientific reports
N2  - We report on the successful implementation and characterization of a cryogenic solid hydrogen target in experiments on high-power laser-driven proton acceleration. When irradiating a solid hydrogen filament of 10 μm diameter with 10-Terawatt laser pulses of 2.5 J energy, protons with kinetic energies in excess of 20 MeV exhibiting non-thermal features in their spectrum were observed. The protons were emitted into a large solid angle reaching a total conversion efficiency of several percent. Two-dimensional particle-in-cell simulations confirm our results indicating that the spectral modulations are caused by collisionless shocks launched from the surface of the the high-density filament into a low-density corona surrounding the target. The use of solid hydrogen targets may significantly improve the prospects of laser-accelerated proton pulses for future applications.
KW  - Laser-produced plasmas
KW  - Plasma-based accelerators
Y1  - 2019
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/53330
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-533305
SN  - 2045-2322
N1  - Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
VL  - 9
IS  - 1, Art. 16534
SP  - 1
EP  - 8
PB  - Macmillan Publishers Limited, part of Springer Nature
CY  - [London]
ER  -