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Narrow-band GeV photons generated from an X-ray free-electron laser oscillator

共振器型X線自由電子レーザからの狭帯域GeV光子の発生

羽島 良一; 藤原 守

Hajima, Ryoichi; Fujiwara, Mamoru

共振型X線自由電子レーザーを用いて、狭帯域のGeV光子($$gamma$$線)を発生する方法を提案する。コンプトン散乱の物理から、発生する光子は、エネルギー幅0.1%の狭帯域となる。本$$gamma$$線光源のフラックス,スペクトル,偏極,エネルギー可変性などについて議論する。

We propose a scheme to generate narrow-bandwidth GeV photons, $$gamma$$-rays, via Compton scattering of hard X-ray photons in an X-ray free-electron laser oscillator. Generated $$gamma$$-rays show a narrow-bandwidth spectrum with a sharp peak, $$sim$$0.1% (FWHM), due to large momentum transfer from electrons to photons. Such $$gamma$$-rays will be a unique probe for studying hadron physics. Features of the $$gamma$$-ray source, flux, spectrum, polarization, tunability and energy resolution are discussed.

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パーセンタイル:49.18

分野:Physics, Nuclear

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