…Deuterons are elongated in the direction of spin, and the reason why atomic nuclei are generally not spherical but have quadrupole moments is due to tensor forces. A nucleus with mass number A and atomic number Z and its mirror nucleus (mass number A, atomic number A-Z) obtained by replacing the protons with neutrons and the neutrons with protons have almost the same energy levels, and have almost the same properties apart from electromagnetic properties. From this, it can be concluded that the nuclear force acting between protons and between neutrons is almost the same. … *Some of the terminology explanations that mention "mirror nuclei" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…重陽子がスピンの方向に細長いラグビーボール状になっており,一般に原子核が球形でなく四重極モーメントをもつのはテンソル力によるものである。 質量数A,原子番号Zの原子核と,その陽子を中性子に,中性子を陽子に置き換えて得られる鏡映核mirror nuclei(質量数A,原子番号A‐Z)とはエネルギー準位等がほぼ等しく,電磁的性質を別としてほとんど同じ性質である。このことから陽子と陽子の間に働く核力と,中性子と中性子の間の核力とはほとんど同じであると結論される。… ※「mirror nuclei」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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