Math (1)

Question 1

Half Life

Answer 1

Amount of time required for the radioactive atoms to decay by half their original value.

(Ci or Bq)

Question 2

Activity

Answer 2

Decays over time, time dependant of the type of radioactive material (no two are the same)

(Ci or Bq)

Question 3

Electron-Volt (eV)

Answer 3

The kinetic energy gained by one electron passing through a potential difference of 1 Volt in a vaccum.

Question 4

How are energies in Industrial Radiography expressed? (units)

Answer 4

keV (kilo-electronvolts)

MeV (million-electrovolt)

Question 5

Kilovolts-Peak (kVp)

Answer 5

Energy for an X-ray is based on the number of keV being drawn by an x-ray tube.

peak-potential applied to the x-ray machine.

Question 6

Radiation Energy

Answer 6

One-third of the potential that is applied to the x-ray tube and is modestly effected by variable such as;

• Type of power
• Rectification & Filtration of power supply

(keV)

Question 7

Range of energies used in industrial radiography applications

Answer 7

20 keV up to 20MeV (or higher)