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Title: Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse

Abstract

High-flux energetic protons whose maximum energies are up to 4 MeV are generated by an intense femtosecond titanium:sapphire laser pulse interacting with 7.5, 12.5, and 25 {mu}m thick polyimide tape targets. Laser pulse with an energy of 1.7 J and with a duration of 34 fs is focused with an f/3.4 parabolic mirror giving an intensity of 3x10{sup 19} W cm{sup -2}. The main pulse to amplified spontaneous emission (ASE) intensity contrast ratio is 2.5x10{sup 7}. The conversion efficiency from the laser energy into the proton kinetic energies is achieved to be {approx}3%, which is comparable to or even higher than those achieved in the previous works; using nanometer-thick targets, in combination with the short-pulse lasers that have almost the same pulse width and the intensity but different main pulse to ASE intensity contrast of {approx}10{sup 10} [Neely et al., Appl. Phys. Lett. 89, 021502 (2006)], in which the authors claim that the main mechanism is target normal sheath acceleration; or using the 7.5 {mu}m thick polyimide target, in combination with the short-pulse laser, which has almost the same pulse width and the intensity, but the main pulse to ASE intensity contrast ratio was controlled to be 2.5x10{sup 5} [Yogomore » et al., Phys. Rev. E 77, 016401 (2008)], in which the authors claim the efficient acceleration by the mechanism of the underdense plasma model. The contrast ratio of the present experiment is in between these two experiments. The possible mechanism of this regime is discussed.« less

Authors:
; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ; ; ; ; ;  [2]
  1. Advanced Photon Research Center, Kansai Research Establishment, Japan Atomic Energy Agency, 8-1 Umemi-dai, Kizugawa, Kyoto, 619-0215 (Japan)
  2. Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712 (Korea, Republic of)
Publication Date:
OSTI Identifier:
21120316
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 15; Journal Issue: 5; Other Information: DOI: 10.1063/1.2928161; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; CONVERSION; EFFICIENCY; EMISSION; KINETIC ENERGY; LASERS; MEV RANGE; MIRRORS; PLASMA; PLASMA PRODUCTION; PLASMA SHEATH; PROTON BEAMS; PROTONS; PULSES; SAPPHIRE; TITANIUM; WIDTH

Citation Formats

Nishiuchi, M, Daido, H, Yogo, A, Orimo, S, Ogura, K, Ma, J, Sagisaka, A, Mori, M, Pirozhkov, A S, Kiriyama, H, Bulanov, S V, Esirkepov, T Zh, Choi, I W, Kim, C M, Jeong, T M, Yu, T J, Sung, J H, Lee, S K, Hafz, N, and Pae, K H. Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse. United States: N. p., 2008. Web. doi:10.1063/1.2928161.
Nishiuchi, M, Daido, H, Yogo, A, Orimo, S, Ogura, K, Ma, J, Sagisaka, A, Mori, M, Pirozhkov, A S, Kiriyama, H, Bulanov, S V, Esirkepov, T Zh, Choi, I W, Kim, C M, Jeong, T M, Yu, T J, Sung, J H, Lee, S K, Hafz, N, & Pae, K H. Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse. United States. https://doi.org/10.1063/1.2928161
Nishiuchi, M, Daido, H, Yogo, A, Orimo, S, Ogura, K, Ma, J, Sagisaka, A, Mori, M, Pirozhkov, A S, Kiriyama, H, Bulanov, S V, Esirkepov, T Zh, Choi, I W, Kim, C M, Jeong, T M, Yu, T J, Sung, J H, Lee, S K, Hafz, N, and Pae, K H. 2008. "Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse". United States. https://doi.org/10.1063/1.2928161.
@article{osti_21120316,
title = {Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse},
author = {Nishiuchi, M and Daido, H and Yogo, A and Orimo, S and Ogura, K and Ma, J and Sagisaka, A and Mori, M and Pirozhkov, A S and Kiriyama, H and Bulanov, S V and Esirkepov, T Zh and Choi, I W and Kim, C M and Jeong, T M and Yu, T J and Sung, J H and Lee, S K and Hafz, N and Pae, K H},
abstractNote = {High-flux energetic protons whose maximum energies are up to 4 MeV are generated by an intense femtosecond titanium:sapphire laser pulse interacting with 7.5, 12.5, and 25 {mu}m thick polyimide tape targets. Laser pulse with an energy of 1.7 J and with a duration of 34 fs is focused with an f/3.4 parabolic mirror giving an intensity of 3x10{sup 19} W cm{sup -2}. The main pulse to amplified spontaneous emission (ASE) intensity contrast ratio is 2.5x10{sup 7}. The conversion efficiency from the laser energy into the proton kinetic energies is achieved to be {approx}3%, which is comparable to or even higher than those achieved in the previous works; using nanometer-thick targets, in combination with the short-pulse lasers that have almost the same pulse width and the intensity but different main pulse to ASE intensity contrast of {approx}10{sup 10} [Neely et al., Appl. Phys. Lett. 89, 021502 (2006)], in which the authors claim that the main mechanism is target normal sheath acceleration; or using the 7.5 {mu}m thick polyimide target, in combination with the short-pulse laser, which has almost the same pulse width and the intensity, but the main pulse to ASE intensity contrast ratio was controlled to be 2.5x10{sup 5} [Yogo et al., Phys. Rev. E 77, 016401 (2008)], in which the authors claim the efficient acceleration by the mechanism of the underdense plasma model. The contrast ratio of the present experiment is in between these two experiments. The possible mechanism of this regime is discussed.},
doi = {10.1063/1.2928161},
url = {https://www.osti.gov/biblio/21120316}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 15,
place = {United States},
year = {2008},
month = {5}
}