12B

Thermal Neutron Capture Evaluated Data



Measurements
1989TAZR: 11B(n, γ), E = thermal; measured Eγ. 12B deduced absolute γ-yields.
2003MOZU: 11B(n, γ); compiled, analyzed capture σ, neutron binding energies.
2008FIZZ: 11B(n, γ), E = thermal; measured cross sections; deduced cross section balance.
2010LE02: 11B(n, γ); 2H(11B, p); E = 81 MeV; deduced reaction rates of astrophysical relevance, and abundances of 11B and 12B in r process.
2011SL01: 11B(n, γ), E = thermal; compiled, evaluated σ, σ(Eγ), γ decay schemes, levels, J, π using ENDF, DICEBOX.
2016FI06: 11B(n, γ), E = thermal; measured Eγ, Iγ, σγ; 12B deduced levels, J, π, absolute transition probabilities, γ-ray cross sections.
Measured total cross section for 11B(n, γ)12B

Recommended value: 9.09 ± 0.10 mb (2016FI06)
Measured values: 9.09 ± 0.10 mb (2016FI06)
5.5 ± 3.3 mb (2003MUZZ)
5.5 ± 3.3 mb (1981MUZQ, 1973MU14)
5 ± 3 mb (1962IM01)

Recommended Values taken from (2016FI06)

Eγ (keV) Ei (keV) Ef (keV) σγ (b) Iγ
  953.1 ± 0.6 953.1 0 (2.66 ± 0.19) × 10 -3 29.2 ± 0.5
2415.57 ± 0.12 Capture State 953.1 (2.65 ± 0.08) × 10 -3 29.2 ± 0.5
3368.36 ± 0.17 0 (6.42 ± 0.08) × 10 -3 70.8 ± 0.5

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Last modified: 12 June 2019