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Comments on the paper by T. Kammash, D.L. Galbraith, A high gain fusion reactor based on the magnetically insulated inertial confinement fusion (MICE) concept

H. Nakashima, H. Takabe1992年Nuclear FusionIF 3出版社

Kammash and Galbraith (see ibid., vol.29, p.1079 (1989)) calculated the energy gain factor Q for the MICF pellet by using a simplified set of particle and energy balance equations and reported that, for a typical example, a Q value of approximately 300 is obtainable with an input energy of approximately 4 MJ (Q is the ratio of the fusion energy to the input energy). The input energy is equal to the initial thermal energy. They proposed to apply the concept to space propulsion. On the other hand, Hasegawa et al (1988) have performed numerical simulations by using the hydrodynamic code HISHO together with theoretical estimation and found a Q value of approximately 15 with a laser input energy of 25 MJ for a typical MICF target. The authors have tried to explain the differences in the input energy requirement and gain values between these works

日本語訳

KammashとGalbraith(同書、第29巻、p.1079(1989)を参照)は、簡略化された粒子およびエネルギーバランス方程式を用いてMICFペレットのエネルギー利得係数Qを計算し、典型的な例として、約4 MJの入力エネルギーで約300のQ値が得られることを報告した(Qは核融合エネルギーと入力エネルギーの比である)。入力エネルギーは初期熱エネルギーに等しい。彼らはこの概念を宇宙推進に応用することを提案した。一方、Hasegawaら(1988)は、流体力学コードHISHOを理論的推定とともに用いて数値シミュレーションを実施し、典型的なMICFターゲットに対して25 MJのレーザー入力エネルギーで約15のQ値を得た。著者らは、これらの研究間における入力エネルギー要件と利得値の差異を説明しようと試みた。

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