LOCALIZATION OF A RADIOACTIVE SOURCE
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Abstract
An angle-responsive sensor, comprising: a radiation detector adapted to detect ionizing radiation; at least one collimator arranged to block radiation from reaching the detector in a manner dependent on a relative orientation of a radiation source, the detector and the collimator, the detector and the collimator defining an aim for the sensor; and circuitry coupled to the detector and which generates an output signal which varies as a function of the relative orientation, wherein the detector and the collimator are arranged to have a working volume of at least 10 cm in depth and having an angular width, such that the slope of the signal as a function of angle varies by less than a factor of 2 over the working volume.
105 Citations
54 Claims
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1-34. -34. (canceled)
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35. An angle-responsive sensor, comprising:
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a radiation detector adapted to detect ionizing radiation; at least one collimator arranged to block radiation from reaching the detector in a manner dependent on a relative orientation of a radiation source, the detector and the collimator, the detector and the collimator defining an aim for the sensor; and circuitry coupled to the detector and which generates an output signal which varies as a function of the relative orientation, wherein the detector and the collimator are arranged to have a working volume of at least 10 cm in depth and having an angular width, such that the slope of the signal as a function of angle varies by less than a factor of 2 over the working volume. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification