What is the half-life of cobalt 59?
|Cobalt-57||271.79 days||decays via electron capture (0.836 MeV)|
|Cobalt-58||70.86 days||decays via electron capture (2.307 MeV)|
|Cobalt-60||5.27 years||decays via beta(-) emission (99.9%, 317.9 keV max, 95.8 keV avg energy) and gamma emission (abs intensities: 99% 1173 keV; 100% 1332 keV)|
What is the half-life of rubidium-87?
48.8 billion years
RADIOMETRIC TIME SCALE
|Parent Isotope||Stable Daughter Product||Currently Accepted Half-Life Values|
|Thorium-232||Lead-208||14.0 billion years|
|Rubidium-87||Strontium-87||48.8 billion years|
|Potassium-40||Argon-40||1.25 billion years|
|Samarium-147||Neodymium-143||106 billion years|
What is the half-life of uranium 238 *?
about 4.5 billion years
The half-life of uranium-238 is about 4.5 billion years, uranium-235 about 700 million years, and uranium-234 about 25 thousand years.
When the nuclide iron 59 decays to cobalt-59 what kind of decay does iron 59 undergo?
Part 1. The decay mode for Fe-59 is beta-minus, which is choice B.
Is cobalt a radioisotope?
cobalt-60, radioactive isotope of cobalt used in industry and medicine. Cobalt-60 is the longest-lived radioactive isotope of cobalt, with a half-life of 5.27 years. It is produced by irradiating the stable isotope cobalt-59 with neutrons in a nuclear reactor.
Is cobalt man made?
A manmade isotope, Cobalt-60, is commonly used in cancer treatments; the gamma radiation released by this radioactive isotope can target tumors, according to the American Brain Tumor Association, particularly brain tumors that need precision treatment.
What is the radioisotope cobalt-60 used for?
Cobalt-60 is used as a radiation source in many common industrial applications, such as in leveling devices and thickness gauges. It is also used for radiation therapy in hospitals. Accidental exposures may occur as the result of loss or improper disposal of medical and industrial radiation sources.
What is the length of one half life?
The half-life of a process is an indication of how fast that process proceeds—a measure of the rate or rapidity of the process. Specifically, the half-life is the length of time that it takes for a substance involved in that process to diminish to one-half of its initial amount.