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Title: High-precision α -particle energies in the decay of Es, Fm, and Md Isotopes

Abstract

Energies of α particles in the decay of heavy Es, Fm and Md isotopes were reevaluated by analyzing previously published and unpublished data. The α-particle spectra were measured in 1970s at the Argonne National Laboratory with a magnetic spectrometer and with silicon detectors using very thin, mass-separated sources. The new values for the α-particle energies were determined with respect to the precise values of 6632.51±0.05 keV for the 253Es α0 group and 6118.10±0.04 keV for the 252Cf α0 group, as well as those of 7040.0±1.0 keV and 7022.0±0.5 keV for the 252Fm α0 and 255Fm α106 groups, respectively, evaluated in the present work. Furthermore, the deduced uncertainties in the α-particle energies were reduced compared to earlier measurements.

Authors:
 [1];  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1526486
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 940; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Fm and Md isotopes; Precise 𝛼-particle energies of Es

Citation Formats

Ahmad, I., and Kondev, F. G. High-precision α-particle energies in the decay of Es, Fm, and Md Isotopes. United States: N. p., 2019. Web. doi:10.1016/j.nima.2019.05.091.
Ahmad, I., & Kondev, F. G. High-precision α-particle energies in the decay of Es, Fm, and Md Isotopes. United States. doi:10.1016/j.nima.2019.05.091.
Ahmad, I., and Kondev, F. G. Fri . "High-precision α-particle energies in the decay of Es, Fm, and Md Isotopes". United States. doi:10.1016/j.nima.2019.05.091.
@article{osti_1526486,
title = {High-precision α-particle energies in the decay of Es, Fm, and Md Isotopes},
author = {Ahmad, I. and Kondev, F. G.},
abstractNote = {Energies of α particles in the decay of heavy Es, Fm and Md isotopes were reevaluated by analyzing previously published and unpublished data. The α-particle spectra were measured in 1970s at the Argonne National Laboratory with a magnetic spectrometer and with silicon detectors using very thin, mass-separated sources. The new values for the α-particle energies were determined with respect to the precise values of 6632.51±0.05 keV for the 253Es α0 group and 6118.10±0.04 keV for the 252Cf α0 group, as well as those of 7040.0±1.0 keV and 7022.0±0.5 keV for the 252Fm α0 and 255Fm α106 groups, respectively, evaluated in the present work. Furthermore, the deduced uncertainties in the α-particle energies were reduced compared to earlier measurements.},
doi = {10.1016/j.nima.2019.05.091},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 940,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
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This content will become publicly available on May 31, 2020
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