A study was made of the diffusion of 82Br. The diffusion coefficient in the low-temperature region was governed by diffusion along dislocations, and an increased dislocation density in the specimens resulted in much higher diffusivities. The diffusivity at 500 to 650C could be described by:

 

D (cm2/s) = 2.0 x 101exp[-1.94(eV)/kT]

Diffusion of Bromide Ions in Alkali Halide Single Crystals. O.R.Dobrovinska, V.I.Solunski, A.G.Shakhova: Ukrayinskyi Fizychnyi Zhurnal, 1967, 12[5], 868-9

 

Table 117

Diffusivity of Br in NaCl Crystals

 

Temperature (C)

D (cm2/s)

20

2.27 x 10-16

100

3.63 x 10-16

200

4.34 x 10-15

400

2.11 x 10-14

500

1.52 x 10-13

550

1.78 x 10-12

600

3.96 x 10-11