15O

β+-Decay Evaluated Data



Measurements
1935MC01: 15O; measured T1/2.
1950BR29: 15O; measured T1/2.
1954KL36: 15O; measured T1/2.
1955BA83: 15O; measured T1/2.
1955KI28: 15O.
1957KI22: 15O.
1957PE12: 15O; measured T1/2.
1959KI99: 15O; measured T1/2.
1960JA12: 15O; measured not abstracted; deduced nuclear properties.
1963CS02: 15O; measured T1/2.
1963NE05: 15O; measured not abstracted; deduced nuclear properties.
1963VA31: 15O; measured not abstracted; deduced nuclear properties.
1972LE33: 15O; measured K/β+ ratios.
1977AZ01: 15O; measured T1/2.
1987SEZL, 1987SEZR, 1988SE11: 15O(β+), (EC); measured β-anisotropy.
1989SE07: 15O(β+); measured βl(θ).
1992TAZQ, 1993TA28, 1993TAZU: 13O(β+), (EC); measured β-NMR spectra asymmetry change in TiO2; deduced μ.
1995GO34: 15O; compiled, reviewed β-decay asymmetry data, other aspects; deduced polarization-asymmetry correlation senstivity to charged currents of right-handed chirality.

Measured half-life for 15O(β+)15N

Recommended value (September, 2015):  122.22 ± 0.32 sec (Limitation of Statistical Weights)
Summary Table of Uncertainty Analysis:   Table 15O preview (PDF)  
Measured values: 122.23 ± 0.23 sec (1977AZ01)
125 ± 2 sec (1963CS02)
122.6 ± 1.0 sec (1963NE05)
  114 ± 12 sec (1963VA31)
122.1 ± 0.1 sec (1960JA12)
124.1 ± 0.5 sec (1959KI99)
120 ± 2 sec (1957KI22)
122 ± 5 sec (1957KI22)
123.95 ± 0.50 sec (1957PE12)
121 ± 3 sec (1955BA83)
123.4 ± 1.3 sec (1954KL36)
118.0 ± 0.6 sec (1950BR29)
126 ± 5 sec (1935MC01)
Other Reviews: 122.24 ± 0.27 sec (2008SE10)

Previous Measurements

 

Eβ+(max) (MeV) log ft K/β- ratio
(1950BR29) (1955KI28) (1957KI22) (1959KI99) (1951FE1A) a b c d (1972LE33)
1.683 ± 0.005 1.735 ± 0.008 1.733 ± 0.005 e 1.739 ± 0.002 3.57 3.64 3.643 3.636 3.637 (10.7 ± 0.6) x 10-4
a) Using T1/2 = 123.6 ± 0.45 sec.
b) Using T1/2 = 122.24 ± 0.16 sec and Qm (1970AJ04).
c) Using T1/2 = 122.24 ± 0.16 sec and Qm (1972JE02).
d) Calculated form tables of (1971GO40).
e) The mean value of 1.723 ± 0.005, 1.736 ± 0.010 MeV and two values from 15N(p, n)15O.

15B(β-)15C Evaluated Data

15C(β-)15N Evaluated Data

A = 15 Beta-Decays Diagram

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Last modified: 21 May 2018