isotope of protactinium

Th then decays through beta particle emission to an isotope of protactinium, Pa.

Twenty nine isotopes of protactinium are known with mass numbers 212-240 as well as three excited isomeric states.

Akladi was not a planet of great natural gifts, except for the isotope of protactinium necessary for the cracking of dilithium.

The most important isotopes are Pa and Pa, which is an intermediate product in obtaining uranium-233 and is the most affordable among artificial isotopes of protactinium.

The primary decay products of isotopes of protactinium lighter than (and including) Pa are actinium isotopes and the primary decay products for the heavier isotopes of protactinium are uranium isotopes.

In 1917/18, two groups of scientists, Otto Hahn and Lise Meitner of Germany and Frederick Soddy and John Cranston of Great Britain, independently discovered another isotope of protactinium, Pa having much longer half-life of about 32,000 years.