Non-classical applications of chemical analysis based on nuclear activation

Grdeń, M.

doi:10.1007/s10967-019-06977-w

Cited by 5 publications

(4 citation statements)

References 631 publications

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“…These dependencies are almost parallel to each other. The difference in their values (for fixed gamma lines for one fissile nucleus) is due to the absence in formula (7) of normalizations to the absolute quantum yield of gamma lines, their self-absorption and absorption in samples, and the efficiency of the spectrometer according to formula (1).…”

Section: Resultsmentioning

confidence: 99%

“…The control of non-proliferation of shielded (in hermetically sealed stainless steel containers) nuclear materials (fertile -232 Th, 238 U and fissile -235 U, 239 Pu) is one of the most important tasks of atomic science and technology [1]. The reliable information about their isotopic composition is required to successfully solve this problem.…”

Section: Introductionmentioning

confidence: 99%

“…The reliable information about their isotopic composition is required to successfully solve this problem. One of the widely used non-destructive methods for the detection and isotopic identification of unshielded and shielded nuclear materials is based on the use of delayed gamma-rays from their fission products [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The essence of this method is to use experimentally obtained information on the ratio of the intensity of stimulated delayed gamma-rays from light and heavy fission products [1][2][3][4]. The yields of light product fragments significantly depend on the mass of fissile nuclei.…”

Section: Introductionmentioning

confidence: 99%

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Isotopic Identification of Photofissed Nuclear Materials in Stainless Steel Containers Using Delayed Gamma-Rays

Pylypchynets¹,

Парлаг²,

Maslyuk³

et al. 2022

Problems of Atomic Science and Technology

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The results of isotope identification of nuclear materials (232Th, 235U, 238U, 239Pu) packed in hermetic stainless steel containers by their stimulated delayed gamma radiation are presented. The ratios of the values of the time dependences of the intensity of gamma radiation of the light and heavy product of their photofission were used for the analysis. Gamma radiation from photofission products 89Rb (1031.9; 1248.1 keV) and 138Cs (1009.8; 1436.8; 2218.0; 2639.6 keV) was used to differentiate nuclear materials. The photofission reaction the samples of nuclear materials was stimulated on an electron accelerator, an M-30 microtron, at maximum bremsstrahlung energy of 12.5 MeV. The possibility of carrying out isotopic identification of nuclear materials using the following sets of ratios of the values of the time dependences of the gamma-line intensity has been demonstrated: X(1031.9)/X(2639.6), X(1248.1)/X(1009.8), X(1248.1)/X(1436.8), X(1248.1)/X(2218.0), X(1248.1)/X(2639.6).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%