How does NA-22 decay?

Sodium-22 is a man-made isotope with a half-life of 2.6 years. It decays emitting a positron (β+ decay) into stable neon-22. The emitted positrons react with the electrons of the surrounding matter and lead to a characteristic annihilation radiation at 511 keV.

Is sodium-22 radioactive?

Is it radioactive? Sodium has one naturally occurring isotope. The nucleus of this isotope contains 11 protons and 12 neutrons and is not radioactive. Sodium-22, sodium’s most stable radioactive isotope, has a half-life of 2.6 years.

What is the use of sodium-22?

use of sodium Of the radioactive artificial isotopes, sodium-22 (2.6-year half-life, the longest half-life of a sodium isotope) is used as a radioactive tracer for natural sodium. Sodium-24 (15-hour half-life) is limited in use by its short life and is produced by irradiation in a nuclear reactor.

What is the atomic number of sodium-22?

11
It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Na-22 (Sodium, atomic number Z = 11, mass number A = 22).

How to calculate the decay of sodium Na 22?

Online radioactive decay calculator that allows you to find out the radioactivity decay in Sodium (Na) 22. Note: The calculation of radioactivity in minerals is based on certain assumptions.

What is the equation for sodium 22 undergoing electron?

1 Answer. Stefan V. Sodium-22 undergoes electron capture according to the following nuclear equation: Notice that the electron capture of Na-22 results in nuclear transmutation; the inner-orbital electron is captured by the nucleus, the result being the formation of a neutron from the combination of said electron with a proton from the nucleus.

How long is the half life of sodium 22?

Effective Half-Life 11.0 days Specific Gamma Constant 1.2 mR/hour per millicurie at 1.0 meter Specific Activity 6244 curies /gram Maximum Beta Range in Air 56.0 inches Maximum Beta Range in Water /Tissue 0.07 inch = 0.18 cm = 1.8 mm

What kind of energy does sodium-22 have?

Sodium – 22 Radiological Safety Guidance Revision Date : 09/20/18 Physical Data GAMMA ENERGIES • 511.0 keV (179.8% abundance/annihilation) • 1274.5 keV ( 99.9%) BETA ENERGY [POSITRON (BETA • 545.5 keV (89.8% abundance/maximum energy) • 215.5 keV (89.8% abundance/average energy)