Average Neutron Capture Cross Sections of ¹⁵¹Eu and ¹⁵³Eu from 3 to 100 keV

Abstract

Neutron capture cross sections of europium isotopes ¹⁵¹Eu and ¹⁵³Eu were measured in the neutron energy range of 3~100keV. Experiments were carried out with the time-of-flight facility at the 52 m station of the JAERI Electron Linear Accelerator. Prompt capture γ-rays were detected by a large liquid scintillation detector and the neutron flux shape was determined with a ⁶Li glass scintillation detector. The average capture cross sections were examined in terms of energy independent strength functions for ¹⁵¹Eu and ¹⁵³Eu.

KEYWORDS:

• neutron capture cross sections
• europium 151
• europium 153
• keV range 3.0–100
• strength functions
• comparative evaluations