Generation and application of Laser-Compton gamma-ray at ETL

Ohgaki, Hideaki; Toyokawa, Hiroyuki; Kudo, K.; Takeda, Naoto; Yamazaki, Tetsuo

doi:10.1016/s0168-9002(00)00693-8

Cited by 60 publications

(29 citation statements)

References 23 publications

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“…It could be noted that the gamma-ray yield of more than could be obtained by using a 10-W Nd:YAG laser. This yield would be acceptable to perform the NRF experiment [18].…”

Section: Proof Of Principle Experimentsmentioning

confidence: 96%

A New Design for Generation of Tunable Gamma-Ray With a Fixed Energy Electron Beam

Ohgaki

Kii

Toyokawa³

2009

IEEE Trans. Nucl. Sci.

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Abstract-A tunable quasi-monochromatic gamma-ray beam is indispensable not only for radiation measurements, but also for precise measurements of nuclear data. A design for generation of tunable quasi-monochromatic gamma-ray from the Compton backscattering of a laser light with a fixed energy electron beam has been investigated. We propose a new design (absorber-collimator scheme) by selecting the scattering angle of the Compton backscattered gamma-ray. Tunable gamma-ray can be obtained by changing the solid angle of the collimator (works as a low cut filter) and absorber (works as a high cut filter). A proof of principle experiment has been performed at the AIST-LCS beamline and the result showed that the absorber-collimator scheme could generate tunable gamma-rays. Numerical simulation based on the EGS4 well reproduced the experimental result.Index Terms-Compton backscattering, storage ring, tunable gamma-ray, EGS4.

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“…It could be noted that the gamma-ray yield of more than could be obtained by using a 10-W Nd:YAG laser. This yield would be acceptable to perform the NRF experiment [18].…”

Section: Proof Of Principle Experimentsmentioning

confidence: 96%

A New Design for Generation of Tunable Gamma-Ray With a Fixed Energy Electron Beam

Ohgaki

Kii

Toyokawa³

2009

IEEE Trans. Nucl. Sci.

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“…Laser Compton gamma-ray facilities have been constructed as parasitic beam lines of electron storage rings, where gamma-ray flux F $ 10 1 À 10 4 /s/keV is available. [7][8][9] Such facilities have been used for studying nuclear physics 10,11) and astrophysics. 12,13) In order to increase the flux of laser Compton gammaray sources, the density of laser photons and electrons at the collision point must be increased.…”

Section: System Descriptionmentioning

confidence: 99%

“…All of them are based on electron accelerators, but the principle of gamma-ray generation has variety: Bremsstrahlung, 29,30) synchrotron radiation, 31) and laser Compton scattering. [7][8][9] In the present study, we employ the nuclear resonance fluorescence for the nondestructive measurement of radionuclides in a waste drum. It is noted that individual nuclei have different excited states and thus the energies of the absorption gamma-rays are different (see Fig.…”

Section: Nuclear Resonance Fluorescencementioning

confidence: 99%

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Proposal of Nondestructive Radionuclide Assay Using a High-Flux Gamma-Ray Source and Nuclear Resonance Fluorescence

Hajima

Hayakawa

Kikuzawa

et al. 2008

J. Nucl. Sci. Technol.

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A nondestructive assay system for radioactive waste management is proposed. The system utilizes nuclear resonance fluorescence triggered by a quasi-monochromatic high-flux gamma ray generated from the Compton scattering of laser photons by relativistic electrons. We employ an energy-recovery linac as an electron source and a mode-locked fiber laser followed by a laser supercavity as a photon source. The combination of these novel technologies realizes a gamma-ray flux much higher than existing sources using electron storage rings. The proposed gamma-ray source produces a quasi-monochromatic gamma ray with a flux of 10 10 /s/keV, which is high enough for industrial applications such as the nondestructive analysis of radionuclides in nuclear waste and the interrogation of fissile material in cargoes. The nuclear resonance fluorescence triggered by quasi-monochromatic gamma rays provides a versatile method of nondestructive analysis of both radioactive and stable nuclides.

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“…A GeV-class electron bunch and a >40-MeV proton beam have been successfully produced [1,2] by using strong laser fields (>10 18 W/cm 2 ) driven by a high-intensity short-pulse laser. In particular, progress has been made in the development of a laser-Compton γ-ray (LCS-γ) source with a combination of a laser system and a conventional electron accelerator [3][4][5][6][7]. A photon flux of ∼10 5 photons/s has been generated with energies of 1-10 MeV [3].…”

Section: Introductionmentioning

confidence: 99%

Development of a Laser Repetition Rate Stabilization System for an Intense Laser-Compton Scattering <i>γ</i>-Ray Source

Mori

Kosuge

Okada

et al. 2014

Plasma and Fusion Research

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Generation and application of Laser-Compton gamma-ray at ETL

Cited by 60 publications

References 23 publications

A New Design for Generation of Tunable Gamma-Ray With a Fixed Energy Electron Beam

A New Design for Generation of Tunable Gamma-Ray With a Fixed Energy Electron Beam

Proposal of Nondestructive Radionuclide Assay Using a High-Flux Gamma-Ray Source and Nuclear Resonance Fluorescence

Development of a Laser Repetition Rate Stabilization System for an Intense Laser-Compton Scattering <i>γ</i>-Ray Source

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