On the possibility of electron degeneracy diagnostics in laser-imploded DT fuel for fast ignition

Y. Nakao, N. Senmyo, N. Nakamura, H. Matsuura, T. Johzaki, V. T. Voronchev

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

A new method to diagnose the degree of electron degeneracy in compressed fuel for fast-ignition inertial confinement fusion is proposed. We focus on 4.44-MeV γ-rays emitted in the reaction 9Be(α, nγ)12C governed by fusion-produced energetic alpha-particles in a laser-imploded DT fuel pellet admixed with a small amount of 9B. In this case the compressed fuel pellet is not subjected to any heating laser pulse. We have evaluated the probability Pα-Be that the α + 9Be reaction occurs during the slowing down of α-particle. It is found that the reaction probability depends strongly on the degeneracy parameter Θ, which is defined as the ratio of electron temperature to the Fermi energy. We show the possibility of diagnosing the electron degeneracy from the Pα-Be-Θ diagram by detecting the 4.44-MeV γ-quanta and DT neutrons emitted from the dense core plasma.

本文言語英語
ページ(範囲)391-394
ページ数4
ジャーナルFusion Science and Technology
56
1
DOI
出版ステータス出版済み - 7 2009

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 材料科学(全般)
  • 機械工学

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