For example, observations of unstable isotopes have shown shifting and even a reordering of the single particle levels of which the shell structure is composed.
12.
Lighter unstable isotopes of samarium primarily decay by electron capture to isotopes of promethium, while heavier ones decay by beta decay to isotopes of europium.
13.
Lighter unstable isotopes of samarium primarily decay by electron capture to isotopes of promethium, while heavier ones convert through beta decay to isotopes of europium.
14.
Thermal neutrons have a different and sometimes much larger effective neutron absorption unstable isotope of the chemical element as a result ( neutron activation ).
15.
Unstable isotopes are in a continual struggle to become more stable; the ultimate goal is becoming one of the 200 or so stable isotopes in the universe.
16.
The major natural source of radioactivity in plant tissue is potassium : 0.0117 % of the naturally occurring potassium is the unstable isotope potassium-40 ( 40 K ).
17.
For instance, we could apply survival analysis to a mixture of stable and unstable carbon isotopes; unstable isotopes would decay sooner or later, but the stable isotopes would last indefinitely.
18.
Additionally, about 29 nuclides of the naturally occurring elements have unstable isotopes with a half-life larger than the age of the Solar System ( ~ 10 9 years or more ).
19.
You cannot buy ingredients made for scientific purposes ( e . g . salt consisted of unstable isotopes of sodium and chlorine; see isotopes of sodium and isotopes of chlorine ).
20.
Not only the methods were spreading out, but also the instruments : when the use of ion traps for the study of unstable isotopes and antiprotons was originally proposed, Prof . em.
