ENSDF - The evaluated nuclear structure data file

Tepel, J.W.

doi:10.1016/0010-4655(84)90115-2

Cited by 13 publications

(16 citation statements)

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“…In the case of nuclear structure data, this step involves reconciling multiple data set types (e.g., prompt γ and particle spectra, decay data) and deriving a recommended set of adopted values. These data form the basis of the Evaluated Nuclear Structure Data File (ENSDF) (4). While most of the ENSDF evaluation is performed in the United States, there is a significant and growing contribution from evaluators around the world.…”

Section: The Nuclear Data Pipelinementioning

confidence: 99%

Our Future Nuclear Data Needs

Bernstein

Brown

Koning

et al. 2019

Annu. Rev. Nucl. Part. Sci.

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A well-established knowledge of nuclear phenomena including fission, reaction cross sections, and structure/decay properties is critical for applications ranging from the design of new reactors to nonproliferation to the production of radioisotopes for the diagnosis and treatment of illness. However, the lack of a well-quantified, predictive theoretical capability means that most nuclear observables must be measured directly and used to calibrate empirical models, which in turn provide the data needed for these applications. In many cases, either there is a lack of data needed to guide the models or the results of the different measurements are discrepant, leading to the development of evaluation methodologies to provide recommended values and uncertainties. In this review, we describe the nuclear data evaluation process and the international community that carries it out. We then discuss new measurements and improved theory and/or modeling needed to address future challenges in applied nuclear science.

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Section: The Nuclear Data Pipelinementioning

confidence: 99%

Our Future Nuclear Data Needs

Bernstein

Brown

Koning

et al. 2019

Annu. Rev. Nucl. Part. Sci.

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“…In this work the values of the parameter k 0 F (N, Z), in terms of which all the different Fermi momenta can be calculated, are taken from the superscaling analysis [9] of electron scattering data, while S p,n are the measured proton and neutron separation energies, taken from the ENSDF database [10]. The numerical values for the cases considered in this work are listed in Table I.…”

Section: Formalism: the Arfg Modelmentioning

confidence: 99%

Asymmetric relativistic Fermi gas model for quasielastic lepton-nucleus scattering

et al. 2018

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We develop an asymmetric relativistic Fermi gas model for the study of the electroweak nuclear response in the quasielastic region. The model takes into account the differences between neutron and proton densities in asymmetric (N > Z) nuclei, as well as differences in the neutron and proton separation energies. We present numerical results for both neutral and charged current processes, focusing on nuclei of interest for ongoing and future neutrino oscillation experiments. We point out some important differences with respect to the commonly employed symmetric Fermi gas model.

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“…Fourth, the β − transition of the daughter must release enough energy to be above the IBD threshold of 1.8 MeV (E νe,max = Q − E γ > 1.8 MeV). The energy released and final state energy can be retrieved from the Evaluated Nuclear Structure File (ENSDF) database [28] maintained by the National Nuclear Data Center. The IBD threshold requirement is applied to all beta branches of each isotope taking into account the individual abundances.…”

Section: Nonfuel Production Of Antineutrinosmentioning

confidence: 99%

“…The β − decays of antineutrino candidates that are to be considered include three main groups. The first is structural materials, which includes 28 Al, 55 Cr, 66 Cu, and 56 Mn. The second is the beryllium reflector, which includes 6 He and 8 Li.…”

Section: Case Study: Hfirmentioning

confidence: 99%

“…The Oklo nuclide tool kit [58] is used to generate ν e for 235 U and the candidates. Oklo uses transition and energy level data from ENSDF-6 [28] and cumulative fission yield data from the and Evaluated Nuclear Data File (ENDF) [27]. Both of these are combined to calculate ν e spectra from fissile isotopes.…”

Section: Calculation Of Nonfuel Excess In νE Spectrummentioning

confidence: 99%

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Nonfuel antineutrino contributions in the ORNL High Flux Isotope Reactor (HFIR)

Balantekin¹,

Band²,

Bass³

et al. 2020

Phys. Rev. C

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Reactor neutrino experiments have seen major improvements in precision in recent years. With the experimental uncertainties becoming lower than those from theory, carefully considering all sources of νe is important when making theoretical predictions. One source of νe that is often neglected arises from the irradiation of the nonfuel materials in reactors. The νe rates and energies from these sources vary widely based on the reactor type, configuration, and sampling stage during the reactor cycle and have to be carefully considered for each experiment independently. In this article, we present a formalism for selecting the possible νe sources arising from the neutron captures on reactor and target materials. We apply this formalism to the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, the νe source for the the Precision Reactor Oscillation and Spectrum Measurement (PROSPECT) experiment. Overall, we observe that the nonfuel νe contributions from HFIR to PROSPECT amount to 1% above the inverse beta decay threshold with a maximum contribution of 9% in the 1.8-2.0 MeV range. Nonfuel contributions can be particularly high for research reactors like HFIR because of the choice of structural and reflector material in addition to the intentional irradiation of target material for isotope production. We show that typical commercial pressurized water reactors fueled with low-enriched uranium will have significantly smaller nonfuel νe contribution.

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ENSDF - The evaluated nuclear structure data file

Cited by 13 publications

References 1 publication

Our Future Nuclear Data Needs

Our Future Nuclear Data Needs

Asymmetric relativistic Fermi gas model for quasielastic lepton-nucleus scattering

Nonfuel antineutrino contributions in the ORNL High Flux Isotope Reactor (HFIR)

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