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Industrial · Radiography / Brachytherapy
Ir
77
192

Iridium-192

A high-activity beta/gamma emitter and the global standard for industrial radiography (NDT) and high-dose-rate brachytherapy. Reactor-produced via neutron capture on Iridium-191.

t½ 73.8 daysBeta Minus (β⁻) & Gamma
77 e⁻6 shells

Atomic Structure

77
Protons
115
Neutrons
K2 e⁻
L8 e⁻
M18 e⁻
N32 e⁻
O15 e⁻
P2 e⁻

Applications

  • Industrial radiography (NDT)
  • HDR brachytherapy
  • Weld & pipeline inspection
  • Aerospace component testing

Production

Reaction
¹⁹¹Ir(n,γ)¹⁹²Ir
Target
Iridium-191
Source
Nuclear Reactor
16 MeV CyclotronNo
30 MeV CyclotronNo
70 MeV CyclotronNo
Nuclear ReactorYes

High specific activity achieved through extended reactor irradiation.