Standard

Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror. / Nayuki, Takuya; Fujii, Takashi; Oishi, Yuji; Takano, Kei; Wang, Xiaofang; Andreev, Alexander Alekseevitch; Nemoto, Koshichi; Ueda, Ken Ichi.

In: Review of Scientific Instruments, Vol. 76, No. 7, 073305, 07.2005.

Research output: Contribution to journal › Article › peer-review

Harvard

Nayuki, T, Fujii, T, Oishi, Y, Takano, K, Wang, X, Andreev, AA, Nemoto, K & Ueda, KI 2005, 'Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror', Review of Scientific Instruments, vol. 76, no. 7, 073305. https://doi.org/10.1063/1.1942527

APA

Nayuki, T., Fujii, T., Oishi, Y., Takano, K., Wang, X., Andreev, A. A., Nemoto, K., & Ueda, K. I. (2005). Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror. Review of Scientific Instruments, 76(7), [073305]. https://doi.org/10.1063/1.1942527

Vancouver

Nayuki T, Fujii T, Oishi Y, Takano K, Wang X, Andreev AA et al. Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror. Review of Scientific Instruments. 2005 Jul;76(7). 073305. https://doi.org/10.1063/1.1942527

Author

Nayuki, Takuya ; Fujii, Takashi ; Oishi, Yuji ; Takano, Kei ; Wang, Xiaofang ; Andreev, Alexander Alekseevitch ; Nemoto, Koshichi ; Ueda, Ken Ichi. / Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror. In: Review of Scientific Instruments. 2005 ; Vol. 76, No. 7.

BibTeX

@article{7818281e7f144e70be836ab812df6ba6,
title = "Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror",
abstract = "The production of energetic protons using a polyimide tape of 7.5 μm thickness was carried out with laser pulses of 30 mJ energy and 80 fs duration. A deformable mirror system with a genetic algorithm (GA) was developed to optimize the laser-focusing spot. The fitness values used in the GA were measured from the focusing intensities under the low-gain condition of the power amplifier, or from x-ray in situ signals emitted from the target. Although we obtained a diffraction-limited size of 2 μm (full width at half maximum) using the former value, a precise compensation using the latter value was essential to accelerate protons whose flux was 106 /MeV/shot to a maximum energy of 1.1±0.3 MeV with laser pulses of only 30 mJ energy since a laser spot that is too tight may be sensitive to wave-front distortion caused by residual thermal lenses of the power amplifier.",
author = "Takuya Nayuki and Takashi Fujii and Yuji Oishi and Kei Takano and Xiaofang Wang and Andreev, {Alexander Alekseevitch} and Koshichi Nemoto and Ueda, {Ken Ichi}",
year = "2005",
month = jul,
doi = "10.1063/1.1942527",
language = "English",
volume = "76",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics",
number = "7",

}

RIS

TY - JOUR

T1 - Production of a MeV proton with 30 mJ laser energy by optimizing the focusing spot using a deformable mirror

AU - Nayuki, Takuya

AU - Fujii, Takashi

AU - Oishi, Yuji

AU - Takano, Kei

AU - Wang, Xiaofang

AU - Andreev, Alexander Alekseevitch

AU - Nemoto, Koshichi

AU - Ueda, Ken Ichi

PY - 2005/7

Y1 - 2005/7

N2 - The production of energetic protons using a polyimide tape of 7.5 μm thickness was carried out with laser pulses of 30 mJ energy and 80 fs duration. A deformable mirror system with a genetic algorithm (GA) was developed to optimize the laser-focusing spot. The fitness values used in the GA were measured from the focusing intensities under the low-gain condition of the power amplifier, or from x-ray in situ signals emitted from the target. Although we obtained a diffraction-limited size of 2 μm (full width at half maximum) using the former value, a precise compensation using the latter value was essential to accelerate protons whose flux was 106 /MeV/shot to a maximum energy of 1.1±0.3 MeV with laser pulses of only 30 mJ energy since a laser spot that is too tight may be sensitive to wave-front distortion caused by residual thermal lenses of the power amplifier.

AB - The production of energetic protons using a polyimide tape of 7.5 μm thickness was carried out with laser pulses of 30 mJ energy and 80 fs duration. A deformable mirror system with a genetic algorithm (GA) was developed to optimize the laser-focusing spot. The fitness values used in the GA were measured from the focusing intensities under the low-gain condition of the power amplifier, or from x-ray in situ signals emitted from the target. Although we obtained a diffraction-limited size of 2 μm (full width at half maximum) using the former value, a precise compensation using the latter value was essential to accelerate protons whose flux was 106 /MeV/shot to a maximum energy of 1.1±0.3 MeV with laser pulses of only 30 mJ energy since a laser spot that is too tight may be sensitive to wave-front distortion caused by residual thermal lenses of the power amplifier.

UR - http://www.scopus.com/inward/record.url?scp=22944460427&partnerID=8YFLogxK

U2 - 10.1063/1.1942527

DO - 10.1063/1.1942527

M3 - Article

AN - SCOPUS:22944460427

VL - 76

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

SN - 0034-6748

IS - 7

M1 - 073305

ER -

ID: 85670284