Method to Compare Fission-to-Scattering Ratios using Uranium-238

From the natural transmutations of uranium to its artificial fission

Corrections for the Emissions Probabilities of the Intense Isotopic Analysis Gamma Rays from Uranium-238 and Applying Them to Uranium

Gamma-ray emission probabilities of 235U and 238U have been studied extensively. While the gamma-ray emission probabilities for 235U are well known, the emission probabilities for differ widely from one study to another. Our study indicates that one of the causes of the large discrepancies in the studies may be due to the true coincidence summing of many gamma rays from the decay of 238U daught...

NUSIMEP-7: uranium isotope amount ratios in uranium particles.

The Institute for Reference Materials and Measurements (IRMM) has extensive experience in the development of isotopic reference materials and the organization of interlaboratory comparisons (ILC) for nuclear measurements in compliance with the respective international guidelines (ISO Guide 34:2009 and ISO/IEC 17043:2010). The IRMM Nuclear Signatures Interlaboratory Measurement Evaluation Progra...

Alpha-recoil thorium-234: dissolution into water and the uranium-234/uranium-238 disequilibrium in nature.

The rate of ejection of alpha-recoil thorium-234 into solution from the surface of zircon sand gives an alpha-recoil range of 550 angstroms. The alpha-recoil thorium-234 atoms ejected into the groundwater may supply excess uranium-234. In pelagic sediments, ejected alpha-recoil thorium-234 may contribute to the supply of mobile uranium-234 in the sedimentary column.

Isochronous mass measurements of uranium fission products

B. Sun1,2, R. Knöbel1,3, H. Geissel1,3, Yu. A. Litvinov1,3, K. Beckert1, F. Bosch1, D. Boutin1,3, C. Brandau1, L. Chen3, I. Cullen4, C. Dimopoulou1, B. Fabian3, M. Hausmann5, O. Klepper1, C. Kozhuharov1, S. A. Litvinov1,3, M. Mazzocco1,6, F. Montes5, G. Münzenberg1, A. Musumarra7,8, S. Nakajima9, C. Nociforo1, F. Nolden1, T. Ohtsubo10, A. Ozawa11, Z. Patyk12, W. R. Plaß3, C. Scheidenberger1,3, ...