Gamma-ray generation using laser-accelerated electron beam

Seong Hee Park; Ho-Hyung Lee; Kitae Lee; Yong-Ho Cha; Ji-Young Lee; Kyung-Nam Kim; Young Uk Jeong

doi:10.1117/12.887167

11 May 2011 Gamma-ray generation using laser-accelerated electron beam

Seong Hee Park, Ho-Hyung Lee, Kitae Lee, Yong-Ho Cha, Ji-Young Lee, Kyung-Nam Kim, Young Uk Jeong

Proceedings Volume 8075, Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond II; 80750Y (2011) https://doi.org/10.1117/12.887167
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

A compact gamma-ray source using laser-accelerated electron beam is being under development at KAERI for nuclear applications, such as, radiography, nuclear activation, photonuclear reaction, and so on. One of two different schemes, Bremsstrahlung radiation and Compton backscattering, may be selected depending on the required specification of photons and/or the energy of electron beams. Compton backscattered gamma-ray source is tunable and quasimonochromatic and requires electron beams with its energy of higher than 100 MeV to produced MeV photons. Bremsstrahlung radiation can generate high energy photons with 20 - 30 MeV electron beams, but its spectrum is continuous. As we know, laser accelerators are good for compact size due to localized shielding at the expense of low average flux, while linear RF accelerators are good for high average flux. We present the design issues for a compact gamma-ray source at KAERI, via either Bremsstrahlung radiation or Compton backscattering, using laser accelerated electron beams for the potential nuclear applications.

Citation Download Citation

Seong Hee Park, Ho-Hyung Lee, Kitae Lee, Yong-Ho Cha, Ji-Young Lee, Kyung-Nam Kim, and Young Uk Jeong "Gamma-ray generation using laser-accelerated electron beam", Proc. SPIE 8075, Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond II, 80750Y (11 May 2011); https://doi.org/10.1117/12.887167

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