Abstract: A scintillation camera is suspended from an elevated gantry and is laterally movable. Sensors detecting the lateral position of the scintillation camera detector head produce signals which are combined with the detector head output signals to produce an image reflecting the occurrence of radioactive events within an expanded rectilinear field of view of the detector head. This image is stored using a recording medium.

Abstract: A radiation analyzer which measures radiation from a plurality of radiation sources in a single measurement cycle to distinguish between the radioactivity level received from a plurality of radiation sources. The radiation level of one of the sources may be known so that that source serves as a radiation standard with which to compare the other sources. Alternatively, the sources may all be known and the comparative radioactivity levels utilized to obtain information concerning some other parameter, such as external attenuation.

Abstract: A radiation analyzer which employs a single photodetector and a plurality of scintillators. Light filters interposed between selected ones of the scintillators selectively attenuate radiation of a predetermined energy range. Plural analyzers each associated with a single scintillator and each receiving electrical pulses from the photodetector attenuated to a different degree are adjusted to tabulate pulses of amplitudes which differ in accordance with the degree of attenuation of pulses received by the analyzers from the photodetector.

Abstract: A nucleonic device for measuring the moisture content of bulk materials using a radioisotopic fast-neutron source such as lithium-7 admixed with an alpha-particle emitter, such as americium-241, as a means of minimizing the thickness of the layer of bulk material required proximate to the moisture sensor for a neutron-reflection moisture gauge for proper operation of said gauge. Minimization of the required thickness of the bulk material permits use of a neutron-reflection moisture gauge for measurements of bulk materials on lightly-loaded belts and other types of conveyors where measurements have previously been impracticable.

Abstract: A scintillation camera system for use in positron imaging in which radiation scattered in an object under study is screened and Compton events, as well as primary radiation, are imaged.

Abstract: Automatic liquid scintillation counting apparatus including a scintillating medium in the elevator ram of the sample changing apparatus. An appropriate source of radiation, which may be the external source for standardizing samples, produces reference scintillations in the scintillating medium which may be used for correction of the gain of the counting system.