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Title: Nuclear fusion of deuterons with light nuclei driven by Coulomb explosion of nanodroplets

Abstract

Theoretical-computational studies of table-top laser-driven nuclear fusion of high energy (up to 15 MeV) deuterons with {sup 7}Li, {sup 6}Li, T, and D demonstrate the attainment of high fusion yields. The reaction design constitutes a source of Coulomb exploding deuterium nanodroplets driven by an ultraintense, near-infrared, femtosecond Gaussian laser pulse (peak intensity 2 Multiplication-Sign 10{sup 18}-5 Multiplication-Sign 10{sup 19} W cm{sup -2}) and a solid, hollow cylindrical target containing the second reagent. The exploding nanodroplets source is characterized by the deuteron kinetic energies, their number, and the laser energy absorbed by a nanodroplet. These were computed by scaled electron and ion dynamics simulations, which account for intra-nanodroplet laser intensity attenuation and relativistic effects. The fusion yields Y are determined by the number of the source deuterons and by the reaction probability. When laser intensity attenuation is weak within a single nanodroplet and throughout the nanodroplets assembly, Y exhibits a power law increase with increasing the nanodroplet size. Y is maximized for the nanodroplet size and laser intensity corresponding to the 'transition' between the weak and the strong intensity attenuation domains. The dependence of Y on the laser pulse energy W scales as W{sup 2} for weak assembly intensity attenuation, andmore » as W for strong assembly intensity attenuation. This reaction design attains the highest table-top fusion efficiencies (up to 4 Multiplication-Sign 10{sup 9} J{sup -1} per laser pulse) obtained up to date.« less

Authors:
; ;  [1]
  1. School of Chemistry, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv (Israel)
Publication Date:
OSTI Identifier:
22068900
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYLINDRICAL CONFIGURATION; DEUTERIUM; DEUTERONS; EFFICIENCY; ELECTRONS; FUSION YIELD; IONS; KINETIC ENERGY; LASER FUSION REACTORS; LASER TARGETS; LASERS; LITHIUM 6; LITHIUM 7; MEV RANGE; PROBABILITY; RELATIVISTIC RANGE; SIMULATION

Citation Formats

Ron, Shlomo, Last, Isidore, and Jortner, Joshua. Nuclear fusion of deuterons with light nuclei driven by Coulomb explosion of nanodroplets. United States: N. p., 2012. Web. doi:10.1063/1.4766755.
Ron, Shlomo, Last, Isidore, & Jortner, Joshua. Nuclear fusion of deuterons with light nuclei driven by Coulomb explosion of nanodroplets. United States. doi:10.1063/1.4766755.
Ron, Shlomo, Last, Isidore, and Jortner, Joshua. Thu . "Nuclear fusion of deuterons with light nuclei driven by Coulomb explosion of nanodroplets". United States. doi:10.1063/1.4766755.
@article{osti_22068900,
title = {Nuclear fusion of deuterons with light nuclei driven by Coulomb explosion of nanodroplets},
author = {Ron, Shlomo and Last, Isidore and Jortner, Joshua},
abstractNote = {Theoretical-computational studies of table-top laser-driven nuclear fusion of high energy (up to 15 MeV) deuterons with {sup 7}Li, {sup 6}Li, T, and D demonstrate the attainment of high fusion yields. The reaction design constitutes a source of Coulomb exploding deuterium nanodroplets driven by an ultraintense, near-infrared, femtosecond Gaussian laser pulse (peak intensity 2 Multiplication-Sign 10{sup 18}-5 Multiplication-Sign 10{sup 19} W cm{sup -2}) and a solid, hollow cylindrical target containing the second reagent. The exploding nanodroplets source is characterized by the deuteron kinetic energies, their number, and the laser energy absorbed by a nanodroplet. These were computed by scaled electron and ion dynamics simulations, which account for intra-nanodroplet laser intensity attenuation and relativistic effects. The fusion yields Y are determined by the number of the source deuterons and by the reaction probability. When laser intensity attenuation is weak within a single nanodroplet and throughout the nanodroplets assembly, Y exhibits a power law increase with increasing the nanodroplet size. Y is maximized for the nanodroplet size and laser intensity corresponding to the 'transition' between the weak and the strong intensity attenuation domains. The dependence of Y on the laser pulse energy W scales as W{sup 2} for weak assembly intensity attenuation, and as W for strong assembly intensity attenuation. This reaction design attains the highest table-top fusion efficiencies (up to 4 Multiplication-Sign 10{sup 9} J{sup -1} per laser pulse) obtained up to date.},
doi = {10.1063/1.4766755},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}