| 摘要 |
<p>The invention concerns a device for measuring the relative proportion of uranium and plutonium in a radioactive package (16), comprising: a photon source (10) to irradiate the package; at least a detector of delayed neutrons (18) to deliver signals counting the neutrons emitted by the package; means (22, 30) for acquiring the count signals, capable of determining a decay of the emitted neutrons in time, characteristic of the radioactive package; computing means (32) for comparing the radioactive package characteristic decay with the decay characteristic of uranium and plutonium respectively and for establishing a relative proportion of uranium and plutonium in the package.</p> |
