Ivanenko, DD (English spelling) IvanenkoDD

Japanese: Ivanenko,D.D.(英語表記)IvanenkoDD
Ivanenko, DD (English spelling) IvanenkoDD

…Atomic nuclei were originally thought to be composed of A protons and N electrons, but this had some drawbacks, such as the difficulty of confining light particles such as electrons in a small area, and the fact that the known spin of atomic nuclei could not be explained by this model. This was solved in one fell swoop with the discovery of the neutron by J. Chadwick in 1932, and based on this, WK Heisenberg and Dmitrij Dmitrievich Ivanenko of the Soviet Union independently established a picture of the atomic nucleus as being composed of protons and neutrons. Once the composition of the atomic nucleus was clear, the next question was what force confines the constituent particles, protons and neutrons (collectively called nucleons), in a small area. …

*Some of the terminology explanations that mention "Ivanenko, DD" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…原子核は最初A個の陽子とN個の電子とから構成されると考えられたが,これには,電子のように軽い粒子を小さな領域に閉じ込めるのは困難であること,知られていた原子核のスピンがこの模型では説明できないことなどの難点があった。これを一挙に解決したのが32年のJ.チャドウィックによる中性子の発見で,これに基づいて,W.K.ハイゼンベルクとソ連のイワネンコDmitrij Dmitrievich Ivanenkoはそれぞれ独立に,陽子と中性子とから構成されるという原子核の描像を確立した。原子核の構成が明らかになると,次に問題になるのは構成粒子である陽子と中性子(両者を総称して核子と呼ぶ)を小さな領域に閉じ込めておく力は何かということになる。…

※「Ivanenko,D.D.」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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