Laser acceleration of protons using multi-ion plasma gaseous targets and its medical implications

Xi Shao, Tung-Chang Liu, Chuan-Sheng Liu, Bengt Eliasson, Wendell Hill, Jyhpung Wang, Shih-Hung Chen

Research output: Contribution to journalMeeting abstract

Abstract

We present an acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO2 laser pulse with a wavelength of 10 μm, the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the foil compounds or mixtures, as well as their density and thickness profiles. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with peak power 70 TW and pulse duration of 150 wave periods. We compared the effects of modifying the thickness and density of the gaseous targets and showed that the compression of the gaseous target affects significantly in the quasi-monoenergetic property of the proton beams. To assess the feasibility of laser-proton cancer therapy with such a proton accelerator, simulations are carried out to model the interaction of protons with water and determine the depth and lateral dose distribution for particle beams produced from PIC simulation. Comparison between the dosage maps of the proton beams produced with different foil densities and thicknesses is also presented.

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proton beams
protons
lasers
foils
ions
laser beams
dosage
radiation pressure
particle beams
therapy
pulse duration
accelerators
simulation
degrees of freedom
cancer
profiles
pulses
wavelengths
water
interactions

Keywords

  • laser acceleration
  • multi-ion plasma gaseous targets
  • laser-proton cancer therapy

Cite this

Shao, Xi ; Liu, Tung-Chang ; Liu, Chuan-Sheng ; Eliasson, Bengt ; Hill, Wendell ; Wang, Jyhpung ; Chen, Shih-Hung. / Laser acceleration of protons using multi-ion plasma gaseous targets and its medical implications. In: Bulletin of the American Physical Society. 2014 ; Vol. 59, No. 15.
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title = "Laser acceleration of protons using multi-ion plasma gaseous targets and its medical implications",
abstract = "We present an acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO2 laser pulse with a wavelength of 10 μm, the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the foil compounds or mixtures, as well as their density and thickness profiles. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with peak power 70 TW and pulse duration of 150 wave periods. We compared the effects of modifying the thickness and density of the gaseous targets and showed that the compression of the gaseous target affects significantly in the quasi-monoenergetic property of the proton beams. To assess the feasibility of laser-proton cancer therapy with such a proton accelerator, simulations are carried out to model the interaction of protons with water and determine the depth and lateral dose distribution for particle beams produced from PIC simulation. Comparison between the dosage maps of the proton beams produced with different foil densities and thicknesses is also presented.",
keywords = "laser acceleration, multi-ion plasma gaseous targets, laser-proton cancer therapy",
author = "Xi Shao and Tung-Chang Liu and Chuan-Sheng Liu and Bengt Eliasson and Wendell Hill and Jyhpung Wang and Shih-Hung Chen",
note = "Originally delivered as an oral presentation at the 56th Annual Meeting of the APS Division of Plasma Physics, Session BO5: Ion Acceleration, and Neutron Sources.",
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Laser acceleration of protons using multi-ion plasma gaseous targets and its medical implications. / Shao, Xi; Liu, Tung-Chang; Liu, Chuan-Sheng; Eliasson, Bengt; Hill, Wendell; Wang, Jyhpung; Chen, Shih-Hung.

In: Bulletin of the American Physical Society, Vol. 59, No. 15, 27.10.2014.

Research output: Contribution to journalMeeting abstract

TY - JOUR

T1 - Laser acceleration of protons using multi-ion plasma gaseous targets and its medical implications

AU - Shao, Xi

AU - Liu, Tung-Chang

AU - Liu, Chuan-Sheng

AU - Eliasson, Bengt

AU - Hill, Wendell

AU - Wang, Jyhpung

AU - Chen, Shih-Hung

N1 - Originally delivered as an oral presentation at the 56th Annual Meeting of the APS Division of Plasma Physics, Session BO5: Ion Acceleration, and Neutron Sources.

PY - 2014/10/27

Y1 - 2014/10/27

N2 - We present an acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO2 laser pulse with a wavelength of 10 μm, the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the foil compounds or mixtures, as well as their density and thickness profiles. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with peak power 70 TW and pulse duration of 150 wave periods. We compared the effects of modifying the thickness and density of the gaseous targets and showed that the compression of the gaseous target affects significantly in the quasi-monoenergetic property of the proton beams. To assess the feasibility of laser-proton cancer therapy with such a proton accelerator, simulations are carried out to model the interaction of protons with water and determine the depth and lateral dose distribution for particle beams produced from PIC simulation. Comparison between the dosage maps of the proton beams produced with different foil densities and thicknesses is also presented.

AB - We present an acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO2 laser pulse with a wavelength of 10 μm, the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the foil compounds or mixtures, as well as their density and thickness profiles. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with peak power 70 TW and pulse duration of 150 wave periods. We compared the effects of modifying the thickness and density of the gaseous targets and showed that the compression of the gaseous target affects significantly in the quasi-monoenergetic property of the proton beams. To assess the feasibility of laser-proton cancer therapy with such a proton accelerator, simulations are carried out to model the interaction of protons with water and determine the depth and lateral dose distribution for particle beams produced from PIC simulation. Comparison between the dosage maps of the proton beams produced with different foil densities and thicknesses is also presented.

KW - laser acceleration

KW - multi-ion plasma gaseous targets

KW - laser-proton cancer therapy

UR - http://meetings.aps.org/link/BAPS.2014.DPP.BO5.12

UR - http://www.aps.org/meetings/baps/

M3 - Meeting abstract

VL - 59

JO - Bulletin of the American Physical Society

T2 - Bulletin of the American Physical Society

JF - Bulletin of the American Physical Society

SN - 0003-0503

IS - 15

ER -