7Li

Thermal Neutron Capture Evaluated Data



Measurements
1967RA24: 6Li(n, γ), E = thermal; measured Eγ; deduced Q.
1968SP01: 6Li(n, γ), E = thermal; measured Eγ, Iγ; deduced Q. 7Li deduced levels, branchings.
1970MEZS: 6Li(n, γ), E = thermal; measured σ.
1970SP02: 6Li(n, γ), E = thermal; measured Eγ, Iγ; deduced Q.
1972OP01: 6Li(n, γ), E = thermal; measured Eγ, Iγ.
1973JUZT, 1973JUZU: 6Li(n, γ), E = thermal; measured σ(Eγ). 7Li deduced γ-branching.
1985KO47: 6Li(n, γ), E = thermal; measured Eγ, Iγ following capture; deduced Q. 7Li deduced transitions, level T1/2.
1999ZHZM, 2000ZHZP: 6Li(n, γ), E = thermal; compiled, evaluated prompt γ-ray data.
2002RE13: 6Li(n, γ), E = thermal; compiled, analyzed prompt Eγ, Iγ.
2003MOZU: 6Li(n, γ); compiled, analyzed capture σ, neutron binding energies.
2006PA09: 6Li(n, γ); E = thermal; measured capture σ.
2008FIZZ: 6Li(n, γ), E = thermal; measured cross sections; deduced cross section balance.
2010LI37, 2010SU08: 6Li(n, γ), E = 0.01 - 0.1 MeV; deduced σ.
2011GE01: 6Li(pol. n, γ), E = 2 - 15 meV; measured Eγ, Iγ, time-of-flight; deduced Aγ asymmetry.
2011SL01: 6Li(n, γ), E = thermal; compiled, evaluated σ, σ(Eγ), γ decay schemes, levels, J, π using ENDF, DICEBOX.
2016FI06: 6Li(n, γ), E = thermal; measured Eγ, Iγ, σγ; 7Li deduced levels, J, π, absolute transition probabilities, γ-ray cross sections.
Measured total cross section for 6Li(n, γ)7Li

Recommended value:
Measured values: 52.6 ± 2.2 mb (EGAF)
38.6 ± 3.6 mb (2003MUZZ)
38.5 ± 3.0 mb (1981MUZQ)
  45 ± 10 mb (1964ST25)
  48 ± 15 mb (1961JA19)

Recommended Values

taken from the Evaluated Gamma-ray Activation File (EGAF) evaluation

 

Eγ (keV) Ei (keV) Ef (keV) σγ Iγ a
477.595 ± 0.003 477.612 0 (2.020 ± 0.106) x 10-2 38.30 ± 2.58
6768.81 ± 0.04   Capture State 477.612 (1.990 ± 0.119) x 10-2 37.80 ± 2.76
7245.91 ± 0.04   0 (3.260 ± 0.185) x 10-2 61.90 ± 4.37
a) Iγ: Intensity per 100 neutron captures.

Branching Ratios deduced from

Thermal Neutron Capture γ-decay (EGAF)

 

Eγ (keV) Ei (keV) Ef (keV) Branching Ratio (%)
477.595 ± 0.003 477.612 0 100
6768.81 ± 0.04   Capture State 477.612      37.9
7245.91 ± 0.04   0      62.1

Previous Measurements

 

Eγ (keV) Ei (keV) Ef (keV) Iγ (%)
E.T. Jurney, private communication to Fay Ajzenberg-Selove, (1974AJ01) (1968SP01) (1961JA19) (1961TO04)
  477   477 0 100 100   100    
6770 7249 477 39 ± 2 35 45 43
7250 0 61 ± 3 65 55 57

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Last modified: 12 June 2019