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Experimental C-U characteristics of one-open-face coaxial detectors are employed in deriving an analytic expression that describes the distributions of ionized impurity bulk charge e(Na – Nd) and electric field E(r) for arbitrary variations of Na – Nd in the detector volume. As an example, e(Na – Nd) = f(r) and E(r) are calculated for a Ge(Li)-detector whose experimental C–U characteristic is approximated by a power law with exponent two. [Russian Text Ignored].

An analytic expression is derived which determines the electric field strength E(r) in the sensitive region of an one-open-face coaxial detector (spheric coaxial detector - SC detector). The cases of no charge in the sensitive region (Na-Nd = 0) and of uniform charge distribution (Na-Nd = = const. ± 0) are considered. The applicability of the expression obtained is confirmed experi-mentally for a model SC detector. The E(r) dependence in SC detectors is shown to be steeper than in coaxial detectors with two open faces (right coaxial detector - RC detector). This de-pendence is found to steepen when approaching the closed face and near it and to be steepest along the cylinder axis. [Russian Text Ignored.]