Argon (18Ar) has 25 known isotopes, from 30Ar to 54Ar and 1 isomer (32mAr), of which three ... The longest-lived radioactive isotopes are 39Ar with a half-life of 269 years, 42Ar with a half-life of 32.9 years, and 37Ar with a half-life of 35.04 ...
38Ar, 18, 20, 37.9627324(4), 穩定, 0+, 0.000632(5). 39Ar, 18, 21, 38.964313(5), 269(3) a, 7/2-. Ar, 18, 22, 39.9623831225(29), 穩定, 0+, 0.996003(30). 41Ar, 18 ...
39Ar, 微量, 269 年 · β, 0.565, 39K. 40Ar, 99.600%, 穩定，帶22個中子. 41Ar, 人造, 109.34 分 · β, 2.49, 41K. 42Ar, 人造, 32.9 年 · β, 0.600, 42K. 氩（Argon）是一种化学元素，在希臘語有「不活潑」的意思，由它的特性而來。它的化学符号是Ar，它 ...
在地球大氣中，不穩定嗰氬-39（39Ar）可以經由宇宙射線轟擊氬-40而生成，另外都可以經由鉀-39（39K）嗰中子俘獲而來。至於氬-37，就可以從（37Ar）核試驗中形成嗰 ...
The 40Ar/39Ar dating method is used to measure the age and timing of a large variety of geological processes, from meteorite samples as old as the Earth (4.5 ...
The 40Ar/39Ar technique is a drastically improved version of the K/Ar dating method. In essence, 40Ar/39Ar dating can be applied to date every mineral and rock ...
2018年11月28日 - 39Ar/Ar ratios in percent of modern Argon (pmAr) for different depths in the Eastern Tropical North Atlantic (blue and red dots). Each sample ...
Detailed decay information for the isotope argon-39 including decay chains and daughter products. ... 39Ar, Half-life, Fermion, 18p 21n, title icon.