ニュートリノ(中性微子)の質量測定用の脂肪酸塩Langmuir-Blodgett膜の開発
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概要
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Since the neutrino was introduced by Pauli in 1933 to filful the energy-mementum conservation in the neuclear β-decay, a finite mass of the neutrino plays an important role in elementary-particle physics and cosmology. The Langmuir-Blodgett film is expected to be an excellent <SUP>3</SUP>H-source for the measurement of the electron anti-neutrino mass because it is homogeneous in the lateral directions and uniform in thickness.<BR>In this review, the preparation of a high radioactive, uniform, and stable LB film of Cd-<SUP>3</SUP>H -arachidate was introduced as a tritium source for the measurement of the electron anti-neutrino mass;a new method was also presented for preparing a LB film of <SUP>109</SUP>Cd-arachidate as a standard source for the measurement. The method requires an extremely small amount of substrate solution.
- 社団法人 日本油化学会の論文