The present analysis of these data, performed with the least-squares method, certifies the outstanding accuracy of the experimental measurements by providing values with good agreement between the different series of measurements and an average value that is close to the currently adopted half-life ...
a very rare radioactive element that occurs in trace amounts in uranium ores. The isotopepolonium-210is produced artificially and is used as a lightweight power source in satellites and to eliminate static electricity in certain industries. Symbol: Po; atomic no: 84; half-life of most stable...
Poloniumhas no stable isotopes, but210Po is one of the products in the decay series of the naturally occurringradioactive isotope238U.210Po has a half-life of 138.4 days, and it is an α-emitter. In the marine environment, some organisms are naturally exposed to very high doses of radiati...
Polonium(Po) has25 known isotopes, all of which areradioactive. They haveatomic massesthat range from 194u to 218u.210Po is the most widely available.209Po (half-life 103 years) and208Po (half-life 2.9 years) can be made through the alpha, proton, or deuteron bombardment ofleadorbismuth...
Most Important Radionuclide: Polonium-210Source: Bombard bismuth-209 with neutrons in nuclear reactor; then beta decay of Bi-210;Half-Life: 138 daysEffective Half-Life: 46 daysSpecific Activity: 4500 Ci/gmDecay Mode: AlphaGI Absorption: 10-50%Lung Clearance Half-Time: Weeks for oxides, hydroxi...
Polonium has 33 known isotopes, all of which are radioactive. They have atomic masses that range from 188 to 220 u. 210Po (half-life 138.376 days) is the most widely available. 209Po (half-life 103 years) and 208Po (half-life 2.9 years) can be made through the alpha, proton, or ...
It has no stable isotopes. (Po-210 has a half-life of only 138 days). It is a radioactive semi-metal found inuraniumores. It is used in some devices to eliminate static electricity in processes such as manufacturing sheet plastic, rolling paper, etc. ...
s crust is about one part in 1015. It occurs in nature as aradioactive decayproduct of uranium,thorium, andactinium. The half-lives of its isotopes range from a fraction of a second up to 103 years; the most common naturalisotopeof polonium,polonium-210, has a half-life of 138.4 days...
half-life, high mobility (as a Noble gas) and significant air concentration. Rn decay chain produces a series of short- and long-lived alpha and beta particle emitting progeny, including polonium-210 (210Po) and lead-210 (210Pb), respectively. Alpha particles are helium nuclei consisting of...
Polonium has 42 known isotopes, all of which are radioactive. They have atomic masses that range from 186 to 227 u. 210Po (half-life 138.376 days) is the most widely available and is made via neutron capture by natural bismuth. The longer-lived 209Po (half-life 125.2±3.3 years, longes...