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Buffered high charge spectrally-peaked proton beams in the relativistic-transparency regime

التفاصيل البيبلوغرافية
العنوان: Buffered high charge spectrally-peaked proton beams in the relativistic-transparency regime
المؤلفون: N P Dover, C A J Palmer, M J V Streeter, H Ahmed, B Albertazzi, M Borghesi, D C Carroll, J Fuchs, R Heathcote, P Hilz, K F Kakolee, S Kar, R Kodama, A Kon, D A MacLellan, P McKenna, S R Nagel, D Neely, M M Notley, M Nakatsutsumi, R Prasad, G Scott, M Tampo, M Zepf, J Schreiber, Z Najmudin
المصدر: New Journal of Physics, Vol 18, Iss 1, p 013038 (2016)
بيانات النشر: IOP Publishing, 2016.
سنة النشر: 2016
المجموعة: LCC:Science
LCC:Physics
مصطلحات موضوعية: laser–plasma interaction, ion acceleration, laser ion source, proton acceleration, Science, Physics, QC1-999
الوصف: Spectrally-peaked proton beams of high charge ( ${E}_{{\rm{p}}}\approx 8\;{\rm{MeV}}$ , ${\rm{\Delta }}E\approx 4\;{\rm{MeV}}$ , $N\approx 50$ nC ) have been observed from the interaction of an intense laser ( $\gt {10}^{19}$ W cm ^−2 ) with ultrathin CH foils, as measured by spectrally-resolved full beam profiles. These beams are reproducibly generated for foil thicknesses 5–100 nm, and exhibit narrowing divergence with decreasing target thickness down to $\approx 8^\circ $ for 5 nm. Simulations demonstrate that the narrow energy spread feature is a result of buffered acceleration of protons. The radiation pressure at the front of the target results in asymmetric sheath fields which permeate throughout the target, causing preferential forward acceleration. Due to their higher charge-to-mass ratio, the protons outrun a carbon plasma driven in the relativistic transparency regime.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1367-2630
Relation: https://doaj.org/toc/1367-2630
DOI: 10.1088/1367-2630/18/1/013038
URL الوصول: https://doaj.org/article/822b47cf4eca462f80435a1ababe1751
رقم الأكسشن: edsdoj.822b47cf4eca462f80435a1ababe1751
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:13672630
DOI:10.1088/1367-2630/18/1/013038