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Title: Investigation of laser ion acceleration inside irradiated solid targets by neutron spectroscopy

Abstract

Origins and acceleration directions of accelerated ions inside solid LiF, CH-LiF, and LiF-CH targets irradiated by a 450 fs, 20 J, 1053 nm laser at an intensity of 3x10{sup 18} W/cm{sup 2} have been investigated by neutron spectroscopy. The irradiated targets generate neutrons through the reaction {sup 7}Li (p,n){sup 7}Be between accelerated protons and background {sup 7}Li ions inside the target. The produced neutron spectra observed from two different observation angles 20 deg. and 120 deg. to the target rear-side normal. From the measured and calculated spectra, by three-dimensional Monte Carlo code, the maximum energy, the total number, and the slope temperature of the accelerated ions are investigated. The results indicate that ions are not only accelerated from the front surface toward the rear surface, but also from the rear surface toward the front surface with comparable maximum energy and higher number.

Authors:
; ;  [1];  [2]
  1. Graduate School of Engineering, Osaka University, 2-1 Suita, Osaka 565-0871 (Japan) and Institute of Laser Engineering, Osaka University, 2-6 Suita, Osaka 565-0871 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
20782533
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 3; Other Information: DOI: 10.1063/1.2177230; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; BERYLLIUM 7; ELECTRON TEMPERATURE; ION TEMPERATURE; IONS; IRRADIATION; LASER RADIATION; LIGHT TRANSMISSION; LITHIUM 7; LITHIUM FLUORIDES; MONTE CARLO METHOD; NEUTRON SPECTRA; NEUTRON SPECTROSCOPY; NEUTRONS; PLASMA; PLASMA DIAGNOSTICS; PLASMA GUNS; PLASMA SIMULATION; PROTONS; SOLIDS; SURFACES; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Youssef, A., Kodama, R., Tampo, M., and Institute of Laser Engineering, Osaka University, 2-6 Suita, Osaka 565-0871. Investigation of laser ion acceleration inside irradiated solid targets by neutron spectroscopy. United States: N. p., 2006. Web. doi:10.1063/1.2177230.
Youssef, A., Kodama, R., Tampo, M., & Institute of Laser Engineering, Osaka University, 2-6 Suita, Osaka 565-0871. Investigation of laser ion acceleration inside irradiated solid targets by neutron spectroscopy. United States. doi:10.1063/1.2177230.
Youssef, A., Kodama, R., Tampo, M., and Institute of Laser Engineering, Osaka University, 2-6 Suita, Osaka 565-0871. Wed . "Investigation of laser ion acceleration inside irradiated solid targets by neutron spectroscopy". United States. doi:10.1063/1.2177230.
@article{osti_20782533,
title = {Investigation of laser ion acceleration inside irradiated solid targets by neutron spectroscopy},
author = {Youssef, A. and Kodama, R. and Tampo, M. and Institute of Laser Engineering, Osaka University, 2-6 Suita, Osaka 565-0871},
abstractNote = {Origins and acceleration directions of accelerated ions inside solid LiF, CH-LiF, and LiF-CH targets irradiated by a 450 fs, 20 J, 1053 nm laser at an intensity of 3x10{sup 18} W/cm{sup 2} have been investigated by neutron spectroscopy. The irradiated targets generate neutrons through the reaction {sup 7}Li (p,n){sup 7}Be between accelerated protons and background {sup 7}Li ions inside the target. The produced neutron spectra observed from two different observation angles 20 deg. and 120 deg. to the target rear-side normal. From the measured and calculated spectra, by three-dimensional Monte Carlo code, the maximum energy, the total number, and the slope temperature of the accelerated ions are investigated. The results indicate that ions are not only accelerated from the front surface toward the rear surface, but also from the rear surface toward the front surface with comparable maximum energy and higher number.},
doi = {10.1063/1.2177230},
journal = {Physics of Plasmas},
number = 3,
volume = 13,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}