Identification and Differentiation of Actinides Inside Nuclear Waste Packages by Measurement of Delayed Gammas

Study on a digital pulse processing algorithm based on template-matching for high-throughput spectroscopy

“…Nuclear fission is the most important multiplicative process involved in non-destructive active interrogation. Among others, unique delayed gamma-ray spectra exist for fissionable isotopes and can be used for isotopic composition measurement [4][5][6][7][8][9][10][11][12][13][14][15][16]. A major challenge in utilizing delayed fission gamma rays emitted after active interrogation for safeguards applications is to perform high-resolution spectroscopy measurements at an ultra-high throughput rate [17].…”

Feasibility study of fissile mass quantification by photofission delayed gamma rays in radioactive waste packages using MCNPX

“…Previous 34 methods [7] have been investigated using delayed neutron from photofission but suffer from 35 similar drawbacks with outgoing neutron attenuation. The preferred method is then to use an 36 incident high energy photon beam to produce photofission in actinides and to measure delayed 37 gamma rays [5][6]. We present here a feasibility study of uranium quantification in 870L 38 radioactive produced by CEA [8] waste packages having a hydrogenated matrix and 39 heterogeneous waste, by detection of photofission delayed gamma rays.…”

Photofission of238U Nuclei

“…Photofission is one of the way to create nuclear fission products. It is the result of the process which is called as photon-induced nuclear (photonuclear) reaction that is important in a variety of applications such as basic science, activation analyses, preparation of medical isotopes and characterization and transmutation of nuclear wastes [1][2][3][4][5][6][7].…”