TY - JOUR
T1 - Diffusion of thallous ions in potassium bromide, measured by the spectrophotometric method
AU - Glasner, A.
AU - Rejoan, A.
AU - Reisfeld, R.
PY - 1961/5
Y1 - 1961/5
N2 - The diffusion of thallous ions in potassium bromide, in the impurity range of temperatures, was measured by the spectrophotometric method.1 The energy of activation Q was found to be 23,500 cal/mole. The pre-exponential factor D0 varied with the experimental conditions, the effect being attributed to variations in the "face boundary", as indicated by experiments carried out under a reduced atmospheric pressure. From experiments with pressed pellets it was deduced that the original equation (containing the factor 62 to account for the "face boundary") used in calculating the diffusion constants D needed correcting as follows: D = (Et/E∞)2tl2/(10.3)2t. This gives for the diffusion of thallous ions in potassium bromide: DTl+ = 0.23 exp (-23,500/RT)cm2/sec. Previous values of D and D0 reported for the diffusion of thallous and lead ions in potassium chloride should similarly be divided by a factor of three.
AB - The diffusion of thallous ions in potassium bromide, in the impurity range of temperatures, was measured by the spectrophotometric method.1 The energy of activation Q was found to be 23,500 cal/mole. The pre-exponential factor D0 varied with the experimental conditions, the effect being attributed to variations in the "face boundary", as indicated by experiments carried out under a reduced atmospheric pressure. From experiments with pressed pellets it was deduced that the original equation (containing the factor 62 to account for the "face boundary") used in calculating the diffusion constants D needed correcting as follows: D = (Et/E∞)2tl2/(10.3)2t. This gives for the diffusion of thallous ions in potassium bromide: DTl+ = 0.23 exp (-23,500/RT)cm2/sec. Previous values of D and D0 reported for the diffusion of thallous and lead ions in potassium chloride should similarly be divided by a factor of three.
UR - http://www.scopus.com/inward/record.url?scp=50549174268&partnerID=8YFLogxK
U2 - 10.1016/0022-3697(61)90043-9
DO - 10.1016/0022-3697(61)90043-9
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AN - SCOPUS:50549174268
SN - 0022-3697
VL - 19
SP - 331
EP - 337
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 3-4
ER -