Dominant front-side acceleration of energetic proton beams from plastic targets irradiated by an ultraintense laser pulse

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3496058· OSTI ID:21532191

Lee, K; Park, S H; Cha, Y -H; Lee, Y W; Jeong, Y U ^[1]; Lee, J Y ^[1]; Kim, K N ^[1]

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1. Quantum Optics Division, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of)

An experimental observation has been made by using aluminum-coated Mylar foils, which strongly supports that in the case of plastic target, the energetic part of the proton beam originates from the front-side of the target. When a 30 fs laser pulse with an intensity of 1.6x10{sup 19} W/cm{sup 2} was irradiated on the 12.5-{mu}m-thick Mylar side of the aluminum-coated Mylar foil, the maximum proton energy was reduced by a factor 5.5 as compared to that of 3.3 MeV observed from the single layer of the Mylar foil. With the help of a two-dimensional particle-in-cell simulation, these observations can be interpreted that in the case of plastic target, the energetic proton beam originates from the front-side of the target. In the case of an aluminum-coated 6-{mu}m-thick Mylar foil, more energetic proton beams of 4.7 MeV were also observed when the laser pulse was irradiated on the aluminum side as compared to those of 3.4 MeV from the single Mylar foil.

• OSTI ID: 21532191
• Journal Information: Physics of Plasmas, Vol. 18, Issue 1; Other Information: DOI: 10.1063/1.3496058; (c) 2011 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
43 PARTICLE ACCELERATORS
ACCELERATION
ALUMINIUM
COATINGS
FOILS
LASERS
MYLAR
PLASMA SIMULATION
PROTON BEAMS
TWO-DIMENSIONAL CALCULATIONS
BEAMS
ELEMENTS
ESTERS
MATERIALS
METALS
NUCLEON BEAMS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLE BEAMS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYESTERS
POLYMERS
SIMULATION
SYNTHETIC MATERIALS