The release of T from single crystals which had been irradiated (1018/cm2) with reactor neutrons was monitored, and used to deduce diffusion data (table 169). The results, for temperatures ranging from 400 to 750C, indicated an activation energy for diffusion of 1.72eV.

T.V.Tsetskhladze, N.I.Ekvtimishvili, I.A.Kharebava: Soobshch. Akad. Nauk Gruz. SSSR, 1973, 72[1], 53-6

 

Table 169

Diffusivity of T in Reactor-Irradiated

LiF Single Crystals

 

Temperature (C)

D (cm2/s)

400

1.0 x 10-12

450

4.6 x 10-12

500

2.1 x 10-11

550

1.2 x 10-10

600

6.2 x 10-10

650

1.2 x 10-9

700

5.2 x 10-9

750

1.3 x 10-8