1976LOZX: ¹⁶O(n, γ), E = thermal; measured σ, γγ-coin. ¹⁷O levels deduced γ-branching.

1977MC05: ¹⁶O(n, γ), E = thermal; measured σ(E_γ); deduced upper limit for σ(2γ). ¹⁷O levels deduced γ-branching.

1977MCZG: ¹⁶O(n, γ), E = thermal; measured E_γ, I_γ, γγ-coin. ¹⁷O levels deduced γ-branching.

1979WU05: ¹⁶O(n, γ), E = thermal; measured σ for double-photon emission, σ_γ.

1999ZHZM: ¹⁶O(n, γ), E = thermal; compiled, evaluated prompt γ-ray data.

2000ZHZP: ¹⁶O(n, γ), E = thermal; compiled, analyzed prompt E_γ, I_γ.

2002RE13: ¹⁶O(n, γ), E = thermal; compiled, analyzed prompt E_γ, I_γ.

2003MOZU: ¹⁶O(n, γ), E not given; compiled, analyzed capture σ, neutron binding energies.

2008FIZZ: ¹⁶O(n, γ), E = thermal; measured cross sections; deduced cross section balance.

2011SL01: ¹⁶O(n, γ), E = thermal; compiled, evaluated σ, σ(E_γ), γ decay schemes, levels, J, π using ENDF, DICEBOX.

2016FI04: ¹⁶O(n, γ), E = thermal; measured E_γ, I_γ, total radiative neutron capture cross sections.

2020HE19: ¹⁶O(n, γ), E(cm) < 1 MeV; analyzed available data; deduced resonance parameters, total σ, reaction rates. Comparison with available data.

2020NA34: ¹⁶O(n, γ), E = 157, 349, 398, 427, 468, 498, 556 keV; measured prompt discrete E_γ, I_γ and TOF spectra, neutron energy spectra; deduced n-capture partial σ(E) to the g.s. and the first excited state in ¹⁷O and total σ(E), astrophysical reaction rates for temperature of 0.001 to 3 GK, Maxwellian-averaged capture cross section (MACS) for thermal energies between kT=5 and 100 keV. Comparison of measured σ(E) with theoretical calculations.

Measured total cross section for ¹⁶O(n, γ)¹⁷O

Recommended value:	0.189 ± 0.008 mb	(EGAF)
Measured values:	0.189 ± 0.008 mb	(EGAF)
	0.190 ± 0.019 mb	(2003MUZZ)
	0.202 ± 0.028 mb	(1981MUZQ, 1977MC05)
	0.202 ± 0.027 mb	(1976EA1B)
	0.178 ± 0.025 mb	(1973MU14, 1964JU05)
	< 0.2 mb	(1955HU1B)

Recommended Values

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

 

Eγ (keV)	Ei (keV)	Ef (keV)	σγ	Iγ a
870.68 ± 0.06	870.71	0	(1.77 ± 0.11) × 10 -4	93.90 ± 7.06
1087.75 ± 0.06	4143.06	3055.28	(1.58 ± 0.07) × 10 -4	83.80 ± 5.13
3272.02 ± 0.08		870.71	(3.54 ± 0.23) × 10 -5	18.70 ± 1.45
2184.42 ± 0.07	3055.28	870.71	(1.64 ± 0.07) × 10 -4	87.00 ± 5.23

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 (%)
870.68 ± 0.06	870.71	0	100
1087.75 ± 0.06	4143.06	3055.28	81.74
3272.02 ± 0.08		870.71	18.26
2184.42 ± 0.07	3055.28	870.71	100

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Previous Measurements

 

Eγ (keV)	Ei (keV)	Ef (keV)	Iγ (%)
			(1977MC05)	(1976EA1B)
870	870	0
1088	4143	3055	82 ± 3	82 ± 3
3271		870	18 ± 3
2184	3055	870

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Last modified: 23 June 2021