Applet: Nuclear Isotope Half-lifes

Here you can select an isotope in three ways:

• Click on its location on the nuclear chart.
• Pre-select one of the ten nuclei by clicking on the selection button in front of it.
• Add or subtract a proton or a neutron relative to the current isotope by clicking on the respective buttons or by using your arrow keys.

For each selected isotope, the gray cross hairs and green square will mark its location on the isotope table, and the number of neutrons, protons will be indicated. You will also see if the isotope is stable and if it has been experimentally detected. If the isotope has been detected, and if it decays, its half-life is given.

The isotope chart is color-coded-coded: half-lifes shorter than the micro-second range are coded in blues, half-lifes shorter than 1000 years are displayed in reds, half-lifes longer than 1000 years in yellow. Stable nuclei are indicated in white.

The numbers are taken from the compilation of G. Audi and A.H. Wapstra, Nucl. Phys. A595, 409(1995).

Basque translation of this web page (by Web Geek Science)