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Needs and Links to ENSDF/NuDat

Needs and Links to ENSDF/NuDat. Alejandro Sonzogni National Nuclear Data Center Brookhaven National Laboratory Upton, NY 11973-5000. ENSDF: Evaluated Nuclear Structure Data File Goal: to contain recommended (evaluated) nuclear structure and decay data for all known nuclei (2935)

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Needs and Links to ENSDF/NuDat

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  1. Needs and Links to ENSDF/NuDat Alejandro Sonzogni National Nuclear Data Center Brookhaven National Laboratory Upton, NY 11973-5000

  2. ENSDF: Evaluated Nuclear Structure Data File Goal: to contain recommended (evaluated) nuclear structure and decay data for all known nuclei (2935) More than 40 contributors worldwide, grouped in NSDD Web: http://www.nndc.bnl.gov/ensdf NSDD: http://www-nds.iaea.org/nsdd.html Results published in Nuclear Data Sheets http://www.nndc.bnl.gov/nds

  3. Derived information • Level Schemes • Gamma-Gamma coincidences Contents Number of nuclei 2,935 Number of levels 140,102 Number of g’s 204,017 Number of gg-coincidences 2,376,466 ENSDF adopted datasets Explicit information Level Properties: • Energy • Half-life • Spin and Parity • Decay Modes Gammas Properties: • Energy • Branching Ratio • Multipolarity • Mixing Ratio • Conversion Coefficients • Reduced transition probability

  4. Explicit information Derived information • Q-value • Parent nucleus info • Proper Normalization Level Properties: • Energy • Half-life • Spin and Parity • Decay Modes Gammas Properties: • Energy • Branching Ratio • Multipolarity • Mixing Ratio • Conversion Coefficients B- Properties: • Average Energy • Intensity • Logft value • Uniqueness Alphas Properties: • Energy • Intensity • Hindrance Factor • Decay Schemes • Auger, Conversion Electrons and X-ray energies and intensities. • Mean Energies • Detailed energy balance • alpha-gamma coincidences ENSDF decay datasets

  5. NuDathttp:www.nndc.bnl.gov/nudat2

  6. 26Al b+/EC decay

  7. Powerful tool to identify materials using Gamma rays coincidences coincident non-coincident g2 g1 g1 g2 Search Capabilities

  8. Before experiments After experiments • Identify nuclei with (possibly) incomplete decay scheme • Produce up to date ENSDF evaluations and translate to ENDF format • Check for missing radiation • Redefine nuclei list • Evaluate new data • Produce new ENSDF file • Translate to ENDF format Possible Homework

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