19N

β--Decay Evaluated Data



Measurements
1974GU19: 19N; measured Eγ, Iγ, delayed neutrons, T1/2; deduced Iγ limits, log ft. 19O level deduced π.
1986DU07: 19N(β-); measured βγ(t); deduced T1/2. 19O deduced levels, γ-branching.
1987MIZU, 1988SA04: 19N; measured β-decay T1/2.
1988DUZT: 19N; measured Eγ, T1/2, production rates.
1988MU08: 19N; measured T1/2, neutron emission probabilities.
1991RE02: 19N; measured T1/2, neutron emission probability, upper limits. Tof isochronous spectrometer, ion-neutron delayed coincidence.
1993REZX: 19N(β-n); measured β-delayed neutron average energies.
1995REZZ: 19N; deduced T1/2.
2003KAZX, 2004KA22, 2004KAZY: 19N(β-); measured β-NMR spectra from oriented nuclei; deduced ground-state g factor.
2006SU12: 19N(β-), (β-n); measured β-delayed En, Eγ, βγ-, nγ-, nβ-coin, T1/2; deduced β-emission and γ-emission probabilities, B(GT). 19O deduced levels, β-feeding intensities.
Measured half-life for 19N(β-)19O

Recommended value (August, 2015): 0.336 ± 0.003 sec (2006SU12)
Summary Table of Uncertainty Analysis: Table 19N preview (PDF)  
Measured values: 0.336 ± 0.003 sec (2006SU12)
0.271 ± 0.008 sec (1995REZZ in (2006SU12): see also 0.255 ± 0.010 sec in (1994RE1R)
and 0.329 ± 0.019 sec in (1991RE02).)
0.300 ± 0.080 sec (1988DUZT)
0.21+0.2-0.1 sec (1988MU08)
0.235 ± 0.032 sec (1988SA04)
0.32 ± 0.10 sec (1986DU07)
0.42 ± 0.04 sec (1974GU19) (Excluded)
Other Reviews: 0.336 ± 0.003 sec (2015BI05)

Previous Measurements

 

Pn (%) β- delayed γ decay scheme for 19O based on (1986DU07)
(1988MU08) 33+34-11 Eγ (keV) Relative Intensity
(1991RE02) 62.4 ± 2.6 96.0 ± 1.0 100 ± 10  
    709.2 ± 0.8   63 ± 21
    3137.8 ± 1.0     76 ± 21

19B(β-)19C Evaluated Data

19C(β-)19N Evaluated Data

19O(β-)19F Evaluated Data

19Ne(β+)19F Evaluated Data

A = 19 Beta-Decays Diagram

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Last modified: 21 May 2018