1964IM03: ³He(n, γ), E = thermal; deduced σ limits.

1973BOWJ: ³He(n, γ); measured σ(E_γ).

1975SM02: ³He(n, γ); measured atomic mass.

1979ALZS: ³He(n, γ), E = thermal; measured σ. ⁴He level deduced admixture of symmetry; calculated σ(E), M1 transitions, Gaussian wave functions for ^3,4He.

1979SU05: ³He(n, γ), E = thermal; measured σ for double-photon emission.

1980AL05: ³He(n, γ), E = thermal; measured σ. ⁴He deduced mixed symmetry level.

1989ABZZ: ³He(n, γ), E = thermal; calculated radiative capture σ; deduced single photon ³He(n, γ) σ.

1989WO10, 1989WOZY: ³He(n, γ), E = thermal; measured capture σ.

1991WE06: ³He(n, γ), E = thermal; measured capture σ. Shell model calculations for ³He(n, γ), meson exchange currents.

2003MOZU: ³He(n, γ); compiled, analyzed capture σ, neutron binding energies.

2020RO10: ³He(n, γ), E < 20 MeV; analyzed available data; deduced ⁴He production rates.

Measured total cross section for ³He(n, γ)⁴He

Recommended value:	0.031 ± 0.009 mb	(2003MUZZ)
Measured value:	0.031 ± 0.009 mb	(2003MUZZ)
	0.055 ± 0.003 mb	(1991WE06)
	0.054 ± 0.006 mb	(1989WO10)
	0.027 ± 0.009 mb	(1980AL05)
	0.060 ± 0.012 mb	(1979SU05)
	0.060 ± 0.030 mb	(1973BO34)

Recommended Values

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

 

Eγ (keV)	Ei (keV)	Ef (keV)	σγ	Iγ a
20520.46	20577.62	0	(3.070 ± 0.879) x 10-5	100

a) Iγ: Intensity per 100 neutron captures.

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Branching Ratios deduced from

Thermal Neutron Capture γ-decay (EGAF)

 

Eγ (keV)	Ei (keV)	Ef (keV)	Branching Ratio (%)
20520.46	20577.62	0	100

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Last modified: 22 June 2021