Effect of Target Composition on Proton Energy Spectra in Ultraintense Laser-Solid Interactions

2006 ◽  
Vol 96 (3) ◽  
Author(s):  
A. P. L Robinson ◽  
A. R. Bell ◽  
R. J. Kingham
Keyword(s):  
Proton Energy ◽  
Energy Spectra ◽  
Target Composition ◽  
Laser Solid Interactions

Inclusive Proton Energy Spectra of the Deuteron Induced Reaction

2011 ◽  
Vol 28 (11) ◽  
pp. 112401 ◽  
Author(s):  
Jia Wang ◽  
Tao Ye ◽  
Wei-Li Sun ◽  
Yukinobu Watanabe ◽  
Kazuyuki Ogata
Keyword(s):  
Proton Energy ◽  
Energy Spectra ◽  
Induced Reaction

scholarly journals Mass-Charge and Energy Spectra of Oxygen Ions in a Two-Element Laser-Produced Plasma

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
R. T. Khaydarov ◽  
U. S. Kunishev
Keyword(s):  
Laser Radiation ◽  
Heavy Elements ◽  
Energy Spectra ◽  
Heavy Component ◽  
Main Attention ◽  
Plasma Ions ◽  
Oxygen Ions ◽  
Target Composition ◽  
The Given ◽  
Flight Measurements

Using a static mass spectrometer, we study the characteristics of multicharge plasma ions generated from solid targets under the action of a 15 nanosecond Nd:YAG laser radiation with maximal intensity 1011 W/cm2. We consider two-element solid targets with a mass of the heavy component ranging from 44.9 (Sc) to 174.9 (Lu) with main attention to the properties of oxygen ions. The time-of-flight measurements show that oxygen ions are obtained in the range of the energy E = 40–250 eV with maximal charge Zmax=2. The latter is independent on the target composition for the given intensity of the laser radiation. However, the properties of the energy spectra of oxygen ions strongly depend on the second component of the target, which is explained by the interaction between the light and heavy elements of the target.

scholarly journals Excitation And Ionization By Auroral Protons

1966 ◽  
Vol 19 (3) ◽  
pp. 309 ◽  
Keyword(s):  
Magnetic Field ◽  
Energy Range ◽  
Pitch Angle ◽  
Proton Energy ◽  
Ionization Rate ◽  
Energy Spectra ◽  
Proton Fluxes ◽  
Atmospheric Ionization ◽  
The Magnetic Field

Height distributions are presented for the atmospheric ionization rate and Balmer radiation resulting from precipitation of auroral protons. These results have been computed assuming proton fluxes with several different energy spectra and pitch-angle distributions about the magnetic field, the total proton energy range being restricted to 1-1000 keY.

scholarly journals Proton acceleration by fast electrons in laser–solid interactions

2002 ◽  
Vol 20 (2) ◽  
pp. 243-253 ◽  
Author(s):  
J.R. DAVIES
Keyword(s):  
Electric Field ◽  
Fast Electron ◽  
Proton Energy ◽  
High Energy ◽  
Dimensional Model ◽  
Proton Acceleration ◽  
Fast Electrons ◽  
One Dimensional ◽  
Long Pulse ◽  
Laser Solid Interactions

The emission of high-energy protons in laser–solid interactions and the theories that have been used to explain it are briefly reviewed. To these theories we add a further possibility: the acceleration of protons inside the target by the electric field generated by fast electrons. This is considered using a simple one-dimensional model. It is found that for relativistic laser intensities and sufficiently long pulse durations, the proton energy gain is typically several times the fast electron temperature. The results are very similar to those obtained for proton acceleration by electron expansion into vacuum.

Allowance for multiple scattering in proton energy spectra

1984 ◽  
Vol 83 (3-4) ◽  
pp. 305-309 ◽  
Author(s):  
A. M. Borisov ◽  
S. V. Ermakov ◽  
Nguyen Macha ◽  
E. A. Romanovsky ◽  
B. M. Saidov
Keyword(s):  
Multiple Scattering ◽  
Proton Energy ◽  
Energy Spectra
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