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Progress on the Europium Neutron-Capture Study using DANCE

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The accurate measurement of neutron-capture cross sections of the Eu isotopes is important for many reasons including nuclear astrophysics and nuclear diagnostics. Neutron capture excitation functions of {sup 151,153}Eu targets were measured recently using a 4{pi} {gamma}-ray calorimeter array DANCE located at the Los Alamos Neutron Science Center for E{sub n} = 0.1-100 keV. The progress on the data analysis efforts is given in the present paper. The {gamma}-ray multiplicity distributions for the Eu targets and Be backing are significantly different. The {gamma}-ray multiplicity distribution is found to be the same for different neutron energies for both {sup 151}Eu and {sup 153}Eu. The statistical simulation to model the {gamma}-ray decay cascade is summarized.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
900869
Report Number(s):
UCRL-PROC-225343
Country of Publication:
United States
Language:
English

References (6)

Neutron Capture Resonances of 152 Gd and 154 Gd journal April 1987
A detector for (n,γ) cross-section measurements at a spallation neutron source
  • Heil, M.; Reifarth, R.; Fowler, M. M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 459, Issue 1-2 https://doi.org/10.1016/S0168-9002(00)00993-1
journal February 2001
Background identification and suppression for the measurement of (n,γ) reactions with the DANCE array at LANSCE
  • Reifarth, R.; Bredeweg, T. A.; Alpizar-Vicente, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 531, Issue 3 https://doi.org/10.1016/j.nima.2004.05.096
journal October 2004
Average Neutron Capture Cross Sections of 151 Eu and 153 Eu from 3 to 100 keV journal October 1979
Acquisition-analysis system for the DANCE (detector for advanced neutron capture experiments) BaF/sub 2/ gamma-ray calorimeter journal June 2006
Simulation of γ cascades in complex nuclei with emphasis on assessment of uncertainties of cascade-related quantities journal November 1998

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
CALORIMETERS
CAPTURE
CROSS SECTIONS
DATA ANALYSIS
DECAY
DISTRIBUTION
EUROPIUM
EXCITATION FUNCTIONS
LOS ALAMOS
MULTIPLICITY
NEUTRON REACTIONS
NEUTRONS
SIMULATION
TARGETS