Copious positron production by femto-second laser via absorption enhancement in a microstructured surface target.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
03 Apr 2020
03 Apr 2020
Historique:
received:
04
11
2019
accepted:
28
02
2020
entrez:
5
4
2020
pubmed:
5
4
2020
medline:
5
4
2020
Statut:
epublish
Résumé
Laser-driven positron production is expected to provide a non-radioactive, controllable, radiation tunable positron source in laboratories. We propose a novel approach of positron production by using a femto-second laser irradiating a microstructured surface target combined with a high-Z converter. By numerical simulations, it is shown that both the temperature and the maximum kinetic energy of electrons can be greatly enhanced by using a microstructured surface target instead of a planar target. When these energetic electrons shoot into a high Z converter, copious positrons are produced via Bethe-Heitler mechanism. With a laser (wavelength λ = 1 μm) with duration ~36 fs, intensity ~5.5 × 10
Identifiants
pubmed: 32245986
doi: 10.1038/s41598-020-61964-6
pii: 10.1038/s41598-020-61964-6
pmc: PMC7125301
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
5861Références
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