Shell effect

Japanese: 殻効果 - かくこうか
Shell effect

...However, recent advances in radio astronomy and X-ray astronomy have confirmed the existence of neutron stars, and their interiors can be considered as nuclei with extremely large A , and their properties are thought to be closely linked to those of normal nuclei.
[Shell effect and pairing effect]
A closer look at the binding energies of nuclei reveals that several corrections are necessary to the above mass formula. The most important of these are shell effects associated with magic numbers and pairing effects that arise depending on whether the number of protons and neutrons is even or odd.

*Some of the terminology that refers to the "shell effect" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ただし,最近の電波天文学やX線天文学の進歩によって,その存在がほぼ確実になった中性子星の内部はAが極端に大きい原子核とみなすこともでき,その性質は通常の原子核の性質と密接に結びついていると考えられている。核分裂
[殻効果と対相関効果]
 原子核の結合エネルギーをより詳しく調べると,上の質量公式にいくつかの補正が必要であることがわかる。そのうちとくに重要なものは,魔法数と結びついた殻効果と陽子数と中性子数が偶数か奇数かによって生ずる対相関効果である。…

※「殻効果」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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