Laser acceleration of monoenergetic protons in a self-organized double layer from thin foil

Vipin Tripathi, Chuan-Sheng Liu, Xi Shao, Bengt Eliasson, Roald Z. Sagdeev

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

We present a theory for the acceleration of monoenergetic protons, trapped in a self-organized double layer, by short pulse laser irradiation on a thin foil with the specific thickness suggested by the simulation study of Yan et al (2008 Phys. Rev. Lett. 100 135003). The laser ponderomotive force pushes the electrons forward, leaving the ions behind until the space charge electric field balances the ponderomotive force at a distance Δ. For the optimal target thickness D = Δ > c/ωp, the electron sheath is piled up at the rear surface and the sheath electric field accelerates the protons until they are reflected by the inertial force in the accelerated frame. These protons are therefore trapped by the combined forces of the electrostatic field of the electron sheath and the inertial force of the accelerating target. Together with the electron layer, they form a double layer and are collectively accelerated by the laser ponderomotive force, leading to monoenergetic ion production.
LanguageEnglish
Article number024014
Number of pages9
JournalPlasma Physics and Controlled Fusion
Volume51
Issue number2
DOIs
Publication statusPublished - 7 Jan 2009

Fingerprint

Metal foil
ponderomotive forces
foils
Protons
sheaths
protons
Electrons
Lasers
Electric fields
inertia
lasers
electric fields
electrons
target thickness
Ions
Laser beam effects
Electric space charge
space charge
ions
irradiation

Keywords

  • Proton acceleration
  • laser accelerator
  • thin foil

Cite this

Tripathi, Vipin ; Liu, Chuan-Sheng ; Shao, Xi ; Eliasson, Bengt ; Sagdeev, Roald Z. / Laser acceleration of monoenergetic protons in a self-organized double layer from thin foil. In: Plasma Physics and Controlled Fusion. 2009 ; Vol. 51, No. 2.
@article{c79d1cb8f3a94563acd3c7de4d4be3c5,
title = "Laser acceleration of monoenergetic protons in a self-organized double layer from thin foil",
abstract = "We present a theory for the acceleration of monoenergetic protons, trapped in a self-organized double layer, by short pulse laser irradiation on a thin foil with the specific thickness suggested by the simulation study of Yan et al (2008 Phys. Rev. Lett. 100 135003). The laser ponderomotive force pushes the electrons forward, leaving the ions behind until the space charge electric field balances the ponderomotive force at a distance Δ. For the optimal target thickness D = Δ > c/ωp, the electron sheath is piled up at the rear surface and the sheath electric field accelerates the protons until they are reflected by the inertial force in the accelerated frame. These protons are therefore trapped by the combined forces of the electrostatic field of the electron sheath and the inertial force of the accelerating target. Together with the electron layer, they form a double layer and are collectively accelerated by the laser ponderomotive force, leading to monoenergetic ion production.",
keywords = "Proton acceleration, laser accelerator, thin foil",
author = "Vipin Tripathi and Chuan-Sheng Liu and Xi Shao and Bengt Eliasson and Sagdeev, {Roald Z.}",
year = "2009",
month = "1",
day = "7",
doi = "10.1088/0741-3335/51/2/024014",
language = "English",
volume = "51",
journal = "Plasma Physics and Controlled Fusion",
issn = "0741-3335",
number = "2",

}

Laser acceleration of monoenergetic protons in a self-organized double layer from thin foil. / Tripathi, Vipin; Liu, Chuan-Sheng; Shao, Xi; Eliasson, Bengt; Sagdeev, Roald Z.

In: Plasma Physics and Controlled Fusion, Vol. 51, No. 2, 024014, 07.01.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Laser acceleration of monoenergetic protons in a self-organized double layer from thin foil

AU - Tripathi, Vipin

AU - Liu, Chuan-Sheng

AU - Shao, Xi

AU - Eliasson, Bengt

AU - Sagdeev, Roald Z.

PY - 2009/1/7

Y1 - 2009/1/7

N2 - We present a theory for the acceleration of monoenergetic protons, trapped in a self-organized double layer, by short pulse laser irradiation on a thin foil with the specific thickness suggested by the simulation study of Yan et al (2008 Phys. Rev. Lett. 100 135003). The laser ponderomotive force pushes the electrons forward, leaving the ions behind until the space charge electric field balances the ponderomotive force at a distance Δ. For the optimal target thickness D = Δ > c/ωp, the electron sheath is piled up at the rear surface and the sheath electric field accelerates the protons until they are reflected by the inertial force in the accelerated frame. These protons are therefore trapped by the combined forces of the electrostatic field of the electron sheath and the inertial force of the accelerating target. Together with the electron layer, they form a double layer and are collectively accelerated by the laser ponderomotive force, leading to monoenergetic ion production.

AB - We present a theory for the acceleration of monoenergetic protons, trapped in a self-organized double layer, by short pulse laser irradiation on a thin foil with the specific thickness suggested by the simulation study of Yan et al (2008 Phys. Rev. Lett. 100 135003). The laser ponderomotive force pushes the electrons forward, leaving the ions behind until the space charge electric field balances the ponderomotive force at a distance Δ. For the optimal target thickness D = Δ > c/ωp, the electron sheath is piled up at the rear surface and the sheath electric field accelerates the protons until they are reflected by the inertial force in the accelerated frame. These protons are therefore trapped by the combined forces of the electrostatic field of the electron sheath and the inertial force of the accelerating target. Together with the electron layer, they form a double layer and are collectively accelerated by the laser ponderomotive force, leading to monoenergetic ion production.

KW - Proton acceleration

KW - laser accelerator

KW - thin foil

UR - http://iopscience.iop.org/0741-3335/51/2/024014

U2 - 10.1088/0741-3335/51/2/024014

DO - 10.1088/0741-3335/51/2/024014

M3 - Article

VL - 51

JO - Plasma Physics and Controlled Fusion

T2 - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 2

M1 - 024014

ER -