Multi-keV proton energies from exploding hydrogen clusters

Autor:	Jonathan P. Marangos, N. Hay, M. B. Mason, John W. G. Tisch, Roland Smith, K. J. Mendham
Rok vydání:	2002
Předmět:	Physics Hydrogen Proton Coulomb explosion chemistry.chemical_element Radius Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line chemistry Ionization Cluster (physics) Atomic physics Cluster expansion
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 35:663-670
ISSN:	1361-6455 0953-4075
Popis:	We report the first direct experimental measurements of the proton energies produced from explosions of isolated hydrogen (H2) clusters in an intense laser field. The measured proton energy distribution from the interaction of a 35 mJ laser pulse of duration 90 fs with a cluster of mean radius 100 A was measured and has a mean proton energy of 7±1 keV. A maximum proton energy of >20 keV was recorded. We show the cluster expansion in this experiment is not due to a purely Coulomb explosion but a combination of Coulomb and hydrodynamic mechanisms. These findings are relevant to fusion studies in laser-heated clusters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::632876fc9449f3ea1302d91b107fca26 https://doi.org/10.1088/0953-4075/35/3/317 Zobrazit plný text záznamu