Efficient laser-driven proton acceleration from a cryogenic solid hydrogen target
- 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.
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| Author: | Jens Polz, Alexander P. L. Robinson, Anton Kalinin, Georg Alexander Becker, Rui Alexandre Costa Fraga, Marco Hellwing, Marco Hornung, Sebastian Keppler, Alexander Kessler, Diethard Klöpfel, Hartmut Liebetrau, Frank Schorcht, Joachim Hein, Matthäus Zepf, Robert Evaristo GrisentiORCiDGND, Malte Christoph Kaluza |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-533305 |
| DOI: | https://doi.org/10.1038/s41598-019-52919-7 |
| ISSN: | 2045-2322 |
| Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/31712576 |
| Parent Title (English): | Scientific reports |
| Publisher: | Macmillan Publishers Limited, part of Springer Nature |
| Place of publication: | [London] |
| Document Type: | Article |
| Language: | English |
| Year of Completion: | 2019 |
| Date of first Publication: | 2019/11/11 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2020/04/01 |
| Tag: | Laser-produced plasmas; Plasma-based accelerators |
| Volume: | 9 |
| Issue: | 1, Art. 16534 |
| Page Number: | 8 |
| First Page: | 1 |
| Last Page: | 8 |
| Note: | 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/. |
| HeBIS-PPN: | 46378118X |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 4.0 |
