1935MC01: ¹⁵O; measured T_1/2.

1950BR29: ¹⁵O; measured T_1/2.

1954KL36: ¹⁵O; measured T_1/2.

1955BA83: ¹⁵O; measured T_1/2.

1955KI28: ¹⁵O.

1957KI22: ¹⁵O.

1957PE12: ¹⁵O; measured T_1/2.

1959KI99: ¹⁵O; measured T_1/2.

1960JA12: ¹⁵O; measured not abstracted; deduced nuclear properties.

1963CS02: ¹⁵O; measured T_1/2.

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 T_1/2.

1987SEZL, 1987SEZR, 1988SE11: ¹⁵O(β⁺), (EC); measured β-anisotropy.

1989SE07: ¹⁵O(β⁺); measured βl(θ).

1992TAZQ, 1993TA28, 1993TAZU: ¹⁵O(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.

2020BU02: ¹⁵O(β⁺), measured E_β, I_β, T_1/2. Comparison with previous experimental results.

Measured half-life for ¹⁵O(β⁺)¹⁵N

Recommended value (July, 2020):	122.29 ± 0.07 sec	(Weighted Average)
Summary Table of Uncertainty Analysis:	(PDF)	Graph of Life-Time: (PDF)
Measured values:	122.308 ± 0.049 sec	(2020BU02)
	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) (Excluded)
	126 ± 5 sec	(1935MC01)
Other Reviews:	122.24 ± 0.27 sec	(2008SE10)
	122.27 ± 0.06 sec	(2020BU02)
	122.22 ± 0.32 sec	(Our analysis in Sept., 2015)

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.

---

¹⁵C(β^-)¹⁵N Evaluated Data

A = 15 Beta-Decays Diagram

Back to Top

Back to Ground-State Decays Data Main Page

Back to Datacomp Home Page

Last modified: 24 June 2021