Equations (1) and (2) used for computing the intensity of scattered γ-radiation in gamma-gamma sampling can be used only when long probes are used; Equation (2) is less accurate as far as the diffusion limitation R > L is concerned.
Equation (3),proposed by the present authors for computing the intensity of scattered γ-radiation, is not restricted by the limitation R > L and gives satisfactory agreement with the experimental curve for both short and long probes.
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N.P. Grazhdankina and I.G. Fakidov, Collection: Gamma Defectoscopy of Metals [in Russian] (Acad. Sci. Press USSR, 1955), p. 61.
I.G. Diad'kin, Izv. Akad. Nauk SSSR, Ser. Geofiz. 4, 323 (1955).
Iu.P. Bulashevich and G.M. Voskoboinikov, Izv. Akad. Nauk SSSR.Ser. Geofiz. 1, 109 (1957).
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Verbovenko, P.K., Fakidov, I.G. Gamma-gamma rock sampling. At Energy 4, 290–291 (1958). https://doi.org/10.1007/BF02207363
- Rock Sampling
- Present Author
- Diffusion Limitation
- Satisfactory Agreement
- Experimental Curve