1974WI14: ¹⁹Ne; measured T_1/2; deduced ft values, GT matrix elements.

1975AZ01: ¹⁹Ne; measured T_1/2. ¹⁹Ne; calculated log ft.

1975MAXA: ¹⁹Ne(EC), (β⁺); measured E_γ, decay branches; deduced log ft.

1976AL07: ¹⁹Ne; measured I_γ; deduced β-branching, log ft.

1981AD05: ¹⁹Ne; measured γγγ-coin; deduced I_β, log ft. ¹⁹F deduced parity mixing effect smaller than shell model predictions.

1983AD03: ¹⁹Ne(β⁺); measured E_γ, I_γ; deduced ft. ¹⁹F levels deduced β-branching ratios, relative I_γ, parity mixing effects.

1983HAZD: ¹⁹Ne(β⁺), (EC); measured triple angular correlation; deduced correlation coefficient D.

1983MAZA: ¹⁹Ne(β⁺), (EC); measured NMR; deduced μ, electric dipole moment.

1983SC32, 1983SCZM: ¹⁹Ne(β⁺), (EC); measured β polarization, asymmetry, time reversal odd angular correlation magnitude R; deduced time reversal invariance.

1983SCZQ: ¹⁹Ne(β⁺), (EC); measured β-decay triple correlation amplitude R; deduced consistency with time reversal invariance.

1984HA01: ¹⁹Ne(β⁺), (EC); measured β⁺(recoil ion)-coin; deduced asymmetry parameter, time reversal symmetry validity.

1985PIZY: ¹⁹Ne(β⁺), (EC); measured β-spectrum.

1987SEZL, 1987SEZR, 1988SE11: ¹⁹Ne(β⁺), (EC); measured β-anisotropy.

1992GE08: ¹⁹Ne(β⁺), (EC); measured in-flight β⁺-decay pattern; deduced T_1/2.

1993SA32: ¹⁹Ne(β⁺); measured (βγ)-coin, β-asymmetry, oriented nuclei, branching ratio. ¹⁹Ne levels deduced (Γ/Γ(W)). ¹⁹F level deduced isovector parity mixing matrix element.

1995GO34: ¹⁹Ne; compiled, reviewed β-decay asymmetry data; deduced polarization-asymmetry correlation senstivity to charged currents of right-handed chirality.

1997KL06: ¹⁹Ne(β⁺); reviewed, analyzed fully ionized sources T_1/2.

Measured half-life for ¹⁹Ne(β⁺)¹⁹F

Adopted value:	17.34 ± 0.09 sec	(1983AD03)
Measured values:	17.34 ± 0.09 sec	(1983AD03)
	17.219 ± 0.017 sec	(1975AZ01)
	17.36 ± 0.06 sec	(1974WI14, 1968GO10)
	16.5 ± 1 sec	(1964VA23)
	17.43 ± 0.06 sec	(1962EA02)
	16.72 ± 0.05 sec	(1960JA12)
	19.5 ± 1.0 sec	(1960WA04, 1958WE25)
	17.4 ± 0.2 sec	(HE59)
	18.3 ± 0.5 sec	(1957AL29)
	17.7 ± 0.1 sec	(1957PE12)
	19 ± 1 sec	(1954NA29)
	18.5 ± 0.5 sec	(1952SC15)
	20.3 ± 0.5 sec	(1939WH02)

Previous Measurements

 

Decay to 19F* (MeV)	Jπ	Branching Ratio (%)			log ft				Eβ(max) (MeV)			εK/β+
		a	(1976AL07)	(1983AD03) b	(1976AL07)	(1981AD05)	(1983AD03) c	(1954JO21) d	(1952SC15)	(1957AL29)	(1958WE25)	(1972LE33)
0	1/2+			99.99	3.237 ± 0.001		3.237 ± 0.002	3.23	2.18 ± 0.03	2.23 ± 0.05	2.24 ± 0.01	(9.6 ± 0.3) x 10-4
0.11	1/2-			(1.2 ± 0.2) x 10-2		7.05 ± 0.08	7.061 ± 0.072
1.554 e	3/2+	< 3 x 10-3 f	(2.1 ± 0.3) x 10-3	(2.22 ± 0.21) x 10-3 g	5.72 ± 0.06		5.700 ± 0.041

a) (1974MA31, 1975MAXA).

b) See also (1981AD05).

c) See also (1985BR29).

d) and B.A. Zimmerman, private communication to Fay Ajzenberg-Selove (1972AJ02).

e) Eγ for 19F*(1.55 → 0.20) = 1356.92 ± 0.15 keV (1976AL07), 1356.84 ± 0.13 keV (1983AD03).

f) (1975FR15) measured (8.2 ± 2.0) x 10-4.

g) From (1976AL07, 1983AD03).

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¹⁹C(β^-)¹⁹N Evaluated Data

¹⁹N(β^-)¹⁹O Evaluated Data

¹⁹O(β^-)¹⁹F Evaluated Data

A = 19 Beta-Decays Diagram

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Last modified: 08 July 2009