The diffusivity of the inert gas in crystals was studied by monitoring gas desorption kinetics during the annealing of previously saturated specimens. The results, for temperatures ranging from 300 to 430C, could be described by:
D (cm2/s) = 2.03 x 10-7 exp[-0.04(eV)/kT]
and results for temperatures ranging from 270 to 400C could be described by:
D (cm2/s) = 1.6 x 10-7 exp[-0.07(eV)/kT]
A.Y.Kupryazhkin, P.V.Volobuev, P.E.Suetin: Fizika Tverdogo Tela, 1974, 16[11], 3402-5
Table 17
Tracer Diffusion of 82Br in KBr-LiBr Melts
LiBr (%) | Temperature (C) | D (cm2/s) |
4 | 750 | 5.62 x 10-5 |
24.5 | 659 | 4.44 x 10-5 |
24.5 | 736 | 4.93 x 10-5 |
24.5 | 759 | 5.87 x 10-5 |
36 | 555 | 2.74 x 10-5 |
36 | 557 | 2.75 x 10-5 |
51.5 | 363 | 9.99 x 10-6 |
51.5 | 401 | 1.28 x 10-5 |
51.5 | 456 | 1.80 x 10-5 |
51.5 | 507 | 2.40 x 10-5 |
51.5 | 554 | 3.11 x 10-5 |
51.5 | 655 | 4.47 x 10-5 |
51.5 | 761 | 6.31 x 10-5 |
76 | 535 | 2.46 x 10-5 |
76 | 643 | 3.57 x 10-5 |
76 | 747 | 5.50 x 10-5 |
99 | 571 | 3.24 x 10-5 |
99 | 669 | 3.80 x 10-5 |
99 | 750 | 5.00 x 10-5 |