Activity of Isotope: mCi, mR, Rem Value & Distance

[exradioa]

Hi all,

how can I find the activity of isotope which it has in area given value mCi or mR or Rem value of this? ionization energy of isotope how many distance can it travel on air and in earth-ground when I know only the Curi or Rem or Roengen?

ex. Who they calculate the hazardous-emergency distance from Fukushima accident?

 

[FermiAged]

If you rephrased your question so it was more clear, perhaps we could help.

 

[raining Pete]

Hi there,

To find the activity of an isotope, you can use a formula that relates the activity to the decay constant and the number of atoms present. This formula is:

Activity = Decay constant * Number of atoms

The decay constant can be found in a table or online for the specific isotope you are interested in. The number of atoms can be determined from the mass of the isotope.

As for the ionization energy of the isotope, this is a measure of how much energy is required to remove an electron from an atom in the isotope. It is usually measured in electron volts (eV) or kilojoules per mole (kJ/mol). The ionization energy can also be found in a table or online for the specific isotope.

The distance an isotope can travel in air or on the ground depends on various factors such as its half-life, the type of radiation it emits, and the environment it is in. The distance can be calculated using equations that take into account these factors. However, it is important to note that the actual distance an isotope can travel can vary greatly depending on the specific conditions.

In the case of the Fukushima accident, the hazardous-emergency distance was likely calculated by experts using data on the specific isotope involved, the amount released, and other factors such as weather patterns and topography.

I hope this helps answer your questions. Let me know if you have any further inquiries.