Thermal-neutron fission cross section of 26.1-min235Um

Publisher Website

1 November 1987

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 36 (5) , 1896-1899
https://doi.org/10.1103/physrevc.36.1896

Abstract

The thermal-neutron fission cross section of

{}^{235}U^{m}

has been measured relative to the ground-state cross section. A rapid radiochemical separation procedure was developed to provide sizeable (

10^{10}

to

10^{11}

atom) samples that were reasonably free of the parent

{}^{239}{Pu}

. From a series of eight measurements, the value of 1.42±0.04 was obtained for the ratio

σ_{m}

/

σ_{g}

.

Keywords

This publication has 10 references indexed in Scilit:

The preparation of a 239Pu mother source for the production of 235mU targets
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1987
Optimization of a He-jet activity transport system to use at LAMPF
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1987
Principles behind a He-jet system and its application for isotope separation
Nuclear Instruments and Methods, 1976
Equipment and techniques for the study of the decay of 235Um
Nuclear Instruments and Methods, 1973
Perturbation of the ${}^{235 m}U$ Decay Rate by Implantation in Transition Metals
Physical Review Letters, 1972
Use of the isomeric nucleus as a probe for surface adsorption and desorption studies
Vacuum, 1972
Effect of Chemical State on the Decay Constant ofU235m
Physical Review B, 1966
Adsorption of Elements from Hydrofluoric Acid by Anion Exchange
Analytical Chemistry, 1960
Isomeric State of Uranium-235
Physical Review B, 1957
27-Minute Isomer of $U^{235}$
Physical Review B, 1957