What is the gamma emission energy of 60Co?

The gamma emission energy of Cobalt-60 (60Co) is significant for several reasons in the context of medical dosimetry and radiation therapy. Cobalt-60 undergoes beta decay, creating Nickel-60 (60Ni), and emits gamma rays with energies of approximately 1.17 MeV and 1.33 MeV — these two primary emissions are characteristic of the decay process of 60Co.

These gamma photon energies are crucial for their application in clinical settings, particularly in radiation therapy, where they are used to treat cancer. The specific energies allow for effective penetration of human tissue, facilitating targeted treatment while minimizing damage to surrounding healthy tissue.

The option reflecting these energies accurately identifies the dual emissions from Cobalt-60, underscoring its importance in medical practice. The other energy values listed are either too low or not characteristic of 60Co emissions, making this choice the only one that correctly represents the unique gamma photon energies associated with Cobalt-60. This understanding is vital for professionals in dosimetry who must accurately assess radiation doses and plan treatment strategies.