neutron activation analysisとは 意味・読み方・使い方

A neutron energy analysis is performed by using a deceleration, a diffusion distance, a thermal neutron absorption effect by cadmium or the threshold reaction of nickel in stainless steel, and the variation with time of the intensity of the neutron flux is measured by nuclides of a plurality of activation substances, whose half lives are different.例文帳に追加

中性子エネルギー分析を減速，拡散距離，カドミウムによる熱中性子吸収効果、またはステンレス鋼のニッケルのしきい値反応を利用して行い、中性子束強度の経時変化を半減期の異なる複数の放射化物質の核種により測定する。 - 特許庁

To obtain an equipment neutron activation analysis method for accurately obtaining measurement result even at a micro region while excluding contamination factors originating, especially from, environment and an analysis instrument.例文帳に追加

特に環境や分析用器具由来のコンタミネーション要因を排除しながら微量域でも正確な測定結果の求まる機器中性子放射化分析法を得る。 - 特許庁

When an impurity in a quartz is to be measured by an equipment neutron activation analysis for enclosing a sample into a neutron irradiation container, by irradiating it with neutrons, performing cooling, and then measuring γ rays, a container made of quartz that is etched by a fluoric acid is used as a neutron irradiation container, the sample is transferred from the neutron irradiation container to another container, and then γ rays are measured.例文帳に追加

試料を中性子照射容器へ封入し中性子を照射し冷却した後γ線測定を行う機器中性子放射化分析により石英中の不純物を測定するに際し、中性子照射容器としてフッ酸によりエッチングした石英製の容器を用い、且つ試料を中性子照射容器から別容器に移し替えた後にγ線測定を行うことを特徴とする石英中の不純物の測定方法。 - 特許庁