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Title: Electron-capture delayed fission properties of neutron-deficient einsteinium nuclei

Abstract

Electron-capture delayed fission (ECDF) properties of neutron-deficient einsteinium isotopes were investigated using a combination of chemical separations and on-line radiation detection methods. 242Es was produced via the 233U(14N,5n)242Es reaction at a beam energy of 87 MeV (on target) in the lab system, and was found to decay with a half-life of 11 ± 3 seconds. The ECDF of 242Es showed a highly asymmetric mass distribution with an average pre-neutron emission total kinetic energy (TKE) of 183 ± 18 MeV. The probability of delayed fission (PDF) was measured to be 0.006 ± 0.002. In conjunction with this experiment, the excitation functions of the 233U(14N,xn)247-xEs and 233U(15N,xn)248-xEs reactions were measured for 243Es, 244Es and 245Es at projectile energies between 80 MeV and 100 MeV.

Authors:
 [1]
  1. Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
754277
Report Number(s):
LBNL-44776
R&D Project: 462201; TRN: US0002764
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: TH: Thesis (Ph.D.); Submitted to the Univ. of California, Berkeley, CA (US); PBD: 5 Jan 2000
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; EINSTEINIUM ISOTOPES; FISSION; HALF-LIFE; URANIUM 233 TARGET; NITROGEN 14 REACTIONS; ELECTRON REACTIONS; ISOTOPE PRODUCTION

Citation Formats

Shaughnessy, Dawn A. Electron-capture delayed fission properties of neutron-deficient einsteinium nuclei. United States: N. p., 2000. Web. doi:10.2172/754277.
Shaughnessy, Dawn A. Electron-capture delayed fission properties of neutron-deficient einsteinium nuclei. United States. https://doi.org/10.2172/754277
Shaughnessy, Dawn A. 2000. "Electron-capture delayed fission properties of neutron-deficient einsteinium nuclei". United States. https://doi.org/10.2172/754277. https://www.osti.gov/servlets/purl/754277.
@article{osti_754277,
title = {Electron-capture delayed fission properties of neutron-deficient einsteinium nuclei},
author = {Shaughnessy, Dawn A.},
abstractNote = {Electron-capture delayed fission (ECDF) properties of neutron-deficient einsteinium isotopes were investigated using a combination of chemical separations and on-line radiation detection methods. 242Es was produced via the 233U(14N,5n)242Es reaction at a beam energy of 87 MeV (on target) in the lab system, and was found to decay with a half-life of 11 ± 3 seconds. The ECDF of 242Es showed a highly asymmetric mass distribution with an average pre-neutron emission total kinetic energy (TKE) of 183 ± 18 MeV. The probability of delayed fission (PDF) was measured to be 0.006 ± 0.002. In conjunction with this experiment, the excitation functions of the 233U(14N,xn)247-xEs and 233U(15N,xn)248-xEs reactions were measured for 243Es, 244Es and 245Es at projectile energies between 80 MeV and 100 MeV.},
doi = {10.2172/754277},
url = {https://www.osti.gov/biblio/754277}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Thesis/Dissertation:
Other availability
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