1985RU09: ¹⁴C(β^-); measured I(β), I(ce).

1987GE04: ¹⁴C(β^-); measured maximum, average β^- energies.

1987MO19: ¹⁴C(β^-); measured β-spectra.

1987SM06: ¹⁴C(β^-); measured βγ-coin, β-count rate.

1988RA37: ¹⁴C(β^-); measured internal bremsstrahlung spectra following β-decay; deduced total internal bremsstrahlung yields.

1989BA33: ¹⁴C(β^-); measured β-spectra, I(ce).

1989TA08: ¹⁴C(β^-); measured β-activity.

1991NO07: ¹⁴C(β^-); measured β-spectra; deduced heavy neutrino evidence, mass, emission probability.

1993GR07: ¹⁴C(β^-); measured β-spectra unfolding, quench intensities.

1994GR04: ¹⁴C(β^-); measured β-counting rates, spectra.

1994HO11: ¹⁴C(β^-); measured integral β-counting rates.

1994SI21: ¹⁴C(β^-); measured activity. Triple-to-double coincidence ratio.

1994VA14: ¹⁴C(β^-); measured β-spectra.

1994YA05: ¹⁴C(β^-); measured E_β, I_β(θ); deduced anisotropy origin.

1995WI20: ¹⁴C(β^-); measured β-endpoint energy; deduced Q_β, no 17 keV neutrino evidence.

1996BE48: ¹⁴C(β^-); measured 2π-β counting rates; calculated 2π-β counting rates, E_β, I_β(θ).

1996SZ04: ¹⁴C(β^-); measured βγ-, (e)γ-, (X-ray)γ-coin.

1998AL07: ¹⁴C(β^-); measured β-spectra.

2000KU25: ¹⁴C(β^-); measured E_β, I_β.

2001CE02: ¹⁴C(β^-); measured β spectra.

2004KR10: ¹⁴C(β^-); measured E_β.

2008AY04: ¹⁴C(β^-); compiled T_1/2 from various ISOL facilities.

Measured half-life for ¹⁴C(β^-)¹⁴N

Recommended value:	5730 ± 40 years	W. Mann, private communication to Fay Ajzenberg-Selove (1976AJ04)
Measured values:	5736 ± 56 years	(1972EM01)
	5660 ± 30 years	(1968BE47)
	5736 ± 56 years	(1968REZZ)
	5745 ± 50 years	(1964HU09)
	5680 ± 40 years	(1962OL04)
	5780 ± 65 years	(1961WA16)
	5900 ± 250 years	(1954CA41)
	5370 ± 200 years	(1951MA30)
	5568 ± 30 years	(AN51)
	5580 ± 90 years	(1950EN59)
	6360 ± 190 years	(1950MI10)
	6360 ± 200 years	(1949HA52)
	5589 ± 75 years	(1949JO07)
	5100 ± 200 years	(1948NO02)
	7200 ± 500 years	(1948YA02)
	4700 ± 400 years	(1946RE10)

Previous Measurements

 

End Point Energy (keV)		log ft
(1951LI26)	155 ± 1 a	(1954CA41)	9.03
(LA53C)	155 ± 1.5	(LI55C) b	9.03
(1957LI51)	156 ± 1	(BA66A) c	9.03
		(KA69C) c	9.02
		(1971GO40) c	9.04

a) Mean value.

b) See also (1958ST50).

c) Using Qm.

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¹⁴B(β^-)¹⁴C Evaluated Data

¹⁴O(β⁺)¹⁴N Evaluated Data

A = 14 Beta-Decays Diagram

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Last modified: 08 July 2009