19O

Thermal Neutron Capture Evaluated Data



Measurements
1994BE29: 18O(n, γ), E = thermal; measured γ-spectra, σ.
2003MOZU: 18O(n, γ), E not given; compiled, analyzed capture σ, neutron binding energies.
2007NA26: 18O(n, γ), E = thermal; measured Eγ, Iγ, γγ-coin, cross sections; deduced levels, J, π, configurations, B(E1). 19O; systematics.
2016FI04: 18O(n, γ), E = thermal; measured Eγ, Iγ, total radiative neutron capture cross sections.
Measured total cross section for 18O(n, γ)19O

Recommended value: 0.16 ± 0.01 mb (2003MUZZ)
Measured values: 0.16 ± 0.01 mb (2003MUZZ)
0.16 ± 0.01 mb (1981MUZQ)
0.16 ± 0.01 mb (1974SH1E)
0.16 ± 0.01 mb (1971BL05)
0.21 ± 0.04 mb (1958HU18)

Branching Ratios deduced from

Thermal Neutron Capture γ-decay (EGAF)

 

Eγ (keV) Ei (keV) Ef (keV) Branching Ratio (%)
    96.0     96.0 0 100
1375.7 1471.7 96.0 98.0 ± 0.2
1471.7 0   2.0 ± 0.2
2371.5 2371.5 0 100
2779.0 2779.0 0 100
1595.7 3067.4 1471.7     100
3057.5 3153.5 96.0 92 ± 4
3153.5 0   8 ± 4
2473.2 3944.9 1471.7     28 ± 4
3848.9 96.0 39 ± 8
3944.9 0 33 ± 8

Previous Measurements

 

Eγ (keV) Ei (keV) Ef (keV) Iγ (%)
(1976SO08) (1971BR02) (1971HI06) (1971HIZF) (1971MC11) (1970FI08) (1969FI07) (1965AL13)
  780 3940 3160           < 15    
1160 2780           < 15    
1570 2370           < 15    
2470 1470     28 ± 4 28 ± 4   28 ± 4    
3394     96     39 ± 8 39 ± 8   48 ± 8    
3940       0     33 ± 8 33 ± 8   24 ± 8    
  380 3160 2780       < 10   < 10    
  890 2270       < 9     < 9      
1690 1470       < 6     < 6      
3064     96 92 ± 4     92 ± 4   92 ± 4    
3160       0         8 ± 4     8 ± 4    
1600 3070 1470                
  410 2780 2370       < 7     < 7      
1310 1470       < 5     < 5      
2684     96       < 10   < 10    
2780       0 100   100 100   100    
  900 2370 1470       < 12   < 12    
2274     96       < 11   < 11    
2370       0 100   100 100   100    
1374 1470     96   98.0 ± 0.2   98.5 ± 0.6 98.6 ± 0.2 98.5 ± 0.6 97 ± 2 96.5 ± 1.6
1470       0     2.0 ± 0.2     1.5 ± 0.6   1.4 ± 0.2   1.5 ± 0.6     3.5 ± 1.6
    96     96       0                

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Last modified: 12 June 2019