Abstract: A detector assembly of a logging tool for disposal within a wellbore penetrating a subterranean formation and comprising: a radiation detector disposed within a pressure housing including a window section and a remaining section, the window section including a window that provides a path for radiation from outside the pressure housing to the detector, wherein the window section and the remaining section of the pressure housing form a unitary, integral structure (i) providing no space between the window section and the remaining section of the pressure housing for an influx of fluid from the wellbore between the window section and the remaining section of the pressure housing, (ii) providing a fluid impermeable structural connection between the window section and the remaining section of the pressure housing, (iii) providing a monolithic structural interface between the window section and the remaining section of the pressure housing, or (iv) combinations thereof.

Abstract: A detector assembly of a logging tool for disposal within a wellbore penetrating a subterranean formation and comprising: a radiation detector disposed within a pressure housing including a window section and a remaining section, the window section including a window that provides a path for radiation from outside the pressure housing to the detector, wherein the window section and the remaining section of the pressure housing form a unitary, integral structure (i) providing no space between the window section and the remaining section of the pressure housing for an influx of fluid from the wellbore between the window section and the remaining section of the pressure housing, (ii) providing a fluid impermeable structural connection between the window section and the remaining section of the pressure housing, (iii) providing a monolithic structural interface between the window section and the remaining section of the pressure housing, or (iv) combinations thereof.

Abstract: A detector assembly disposed about a tubular for placement within a wellbore penetrating a subterranean formation and comprising: a gamma radiation detector disposed within a pressure housing, wherein the detector extends an axial length in a direction parallel to a central axis of the tubular; and a neutron shield disposed about a circumference of the tubular along at least the axial length of the detector, wherein the neutron shield reduces an amount of neutrons that pass from the wellbore and/or the formation through the tubular during operation of the detector assembly, while allowing transmission of gamma rays therethrough to the detector.