β--Decay Evaluated Data

1989LE16, 1989LEZM, 1989MUZU: 20C(β-n); measured T1/2, β-delayed neutron emission probabilities.
1990LEZR: 20C; measured neutron spectra following β-decay.
1990MU06: 20C; calculated T1/2, delayed neutron emission probabilities.
2003YO02: 20C(β-), (β-n); measured β-decay T1/2, β-delayed neutron multiplicities. Comparison with previous work, model predictions.
2011PEZY: 20C(β-); measured Eγ, Iγ. 20C deduced 2+1 state γ-decay T1/2. 20C calculated B(E2), transition strengths.
Measured half-life for 20C(β-)20N

Recommended value (September, 2015): 16.3+4.0-3.5 ms (Weighted Average)
Summary Table of Uncertainty Analysis:      Table 20C preview (PDF)  
Measured values: 21.8+15.0-7.4 ms (2003YO02)
16.7 ± 3.5 ms (1994RE1A: see also 16.7 ± 3.5 ms in the unpublished private
communications of (2008REZZ)/(1995REZZ).)
14+6-5 ms (1990MU06)
16+14-7 ms (1989LE16)
Other Reviews: 16.2 ± 3.5 ms (2015BI05)

Previous Measurements


Reference Pn (%) P1n (%) P2n (%)
(1989LE16) 50 ± 30    
(1990MU06) 72 ± 14    
(2003YO02)   65+19-18 < 18.6

20N(β-)20O Evaluated Data

20O(β-)20F Evaluated Data

20F(β-)20Ne Evaluated Data

20Na(β+)20Ne Evaluated Data

20Mg(β+)20Na Evaluated Data

A = 20 Beta-Decays Diagram

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Last modified: 30 June 2021