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Rubidium is a chemical element; it has symbol Rb and atomic number 37. ... Natural rubidium is radioactive, with specific activity of about 670 Bq/g, ...
Rubidium-82 (82 Rb) is a radioactive isotope of rubidium. 82 Rb is widely used in myocardial perfusion imaging . This isotope undergoes rapid uptake by myocardiocytes , which makes it a valuable tool for identifying myocardial ischemia in Positron Emission Tomography (PET) imaging.
Rubidium (37 Rb) has 36 isotopes, with naturally occurring rubidium being composed of just two isotopes; 85 Rb (72.2%) and the radioactive 87 Rb (27.8%). 87 Rb has a half-life of 4.92 × 10 10 years. It readily substitutes for potassium in minerals, and is therefore fairly widespread.
[30] [31] Natural rubidium is similarly slightly radioactive, with 27.83% being the long-lived radioisotope rubidium-87. [ 10 ] : 74 Caesium-137 , with a half-life of 30.17 years, is one of the two principal medium-lived fission products , along with strontium-90 , which are responsible for most of the radioactivity of spent nuclear fuel after ...
One gram of rubidium-87 and a radioactivity count rate that, after taking solid angle effects into account, is consistent with a decay rate of 3200 decays per second corresponds to a specific activity of 3.2 × 10 6 Bq/kg. Rubidium atomic mass is 87 g/mol, so one gram is 1/87 of a mole. Plugging in the numbers:
The link between the alleged drone sightings and radioactive material stemmed from the U.S. Nuclear Regulatory Commission issuing an alert on Dec. 5 that stated a piece of medical equipment used ...
The lunar atmosphere contains mainly argon, helium and neon, along with potassium and rubidium and possibly other elements at lesser levels. It extends from the moon's surface to a height of about ...
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