kerma-rate constant
The quantity kerma-rate constant (k) makes it possible to convert becquerel (Bq) to gray (Gy) in the case of radiation from external activity (A):K = k×A×t / r2
K =
kerma in air (in Gy)
k = kerma-rate constant (in Gy·m2·Bq-1·h-1)
A = activity (in Bq)
t = exposure time (in h)
k = kerma-rate constant (in Gy·m2·Bq-1·h-1)
A = activity (in Bq)
t = exposure time (in h)
There are several variants of this quantity, such as dose rate constant (d), ambient dose rate constant (h), and gamma constant (Γ).