Table 2 Physical parameters used in the homogenous model for flow and transport

R

2.537e-8

Vertical recharge

m/s

N

0.15

Effective porosity

-

alpha_L

0.5

Longitudinal dispersivity

m²/s

alpha_T

0.005

Transverse dispersivity

m²/s

K1

3.17e-5

Hydraulic conductivity

m/s

C_in

2.22e8 (Co-60)

Initial activity concentration

Bq/m³

5.66e12 (Cs-137)

3.5e7 (Am-241)

D_m

2.78e6 (Co-60)

Effective diffusion coefficient

m²/s

2.54e-9 (Cs-137)

3.17e-9 (Am-241)

${\mathit{t}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}$

5.27 (Co-60)

Radioactive half-life

Years

30 (Cs-137)

432 (Am-241)