1964MC16: ¹⁷Ne; measured not abstracted; deduced nuclear properties.

1965HA20: ¹⁷Ne(β⁺p); deduced nuclear properties.

1966HA22: ¹⁷Ne; deduced log ft.

1967ES02: ¹⁷Ne; measured not abstracted; deduced nuclear properties.

1967FI10: ¹⁷Ne.

1971ESZR, 1971HA05: ¹⁷Ne; measured β-delayed proton spectra, E_γ, I_γ, T_1/2, pγ-coin; deduced log ft. ¹⁷F deduced levels, antianalog state, isospin mixing.

1988BO39: ¹⁷Ne(β⁺p), (β⁺α); measured T_1/2, β-delayed E(p), E(α), I(p), I(α), β(particle)-coin. ¹⁷Ne deduced particle branching ratio, β strength function.

1989RE02: ¹⁷Ne(β⁺p); measured β-delayed proton spectra.

1993BO36: ¹⁷Ne(β⁺); measured βγ-coin; deduced asymmetry.

1993RIZY: ¹⁷Ne(β⁺); measured βγ-coin. ¹⁷F level deduced branching ratio.

1994JO04: ¹⁷Ne(β⁺); compiled, reviewed β-decay data.

1996OZZZ: ¹⁷Ne(β⁺); measured E_β, E_γ; deduced β-ray branching ratios. ¹⁷F deduced level.

1997KI19: ¹⁷Ne(β⁺p); measured β-delayed proton spectra, pγ-coin. ¹⁶O levels deduced β-delayed proton branching ratios. Implications for ¹²C(α, γ) reaction.

1997OZZZ, 1998OZ01: ¹⁷Ne(β⁺); measured E_γ, I_γ; deduced β-branching ratio to ¹⁷F first excited state, log ft, asymmetry relative to mirror nucleus ¹⁷N.

1998CH05: ¹⁷Ne(β⁺); measured β-delayed pα(¹²C)-coin. ¹⁷F deduced IAS p, α branching ratios. Implications for stellar helium burning discussed.

2002CH61: ¹⁷Ne(β⁺p), (β⁺α); measured E_p, E_α, pα(¹²C)-coin following decay of intermediate IAS state; deduced branching ratios. ¹⁷F deduced branching ratios for particle decay from IAS.

2002MO19: ¹⁷Ne(β⁺p), (β⁺α); measured E_p, E_α, pγ-coin, angular correlations; deduced log ft, Gamow-Teller strength. ¹⁷F deduced levels, J, π, particle decay branching ratios.

2004BA12: ¹⁷Ne(β⁺), (EC); measured β-NMR spectra. ¹⁷Ne deduced ground-state μ.

2020BA07: compiled β⁺-delayed proton (or α) emission for very neutron-deficient nuclei, J, π, T_1/2, branching ratios.

Measured half-life for ¹⁷Ne(β⁺)¹⁷F

Recommended value (July, 2015):	109.2 ± 0.6 ms	(Weighted Average of 1971HA05 and 1988BO39)
Summary Table of Uncertainty Analysis:	(PDF)
Measured values:	109.3 ± 0.6 ms	(1988BO39)
	109.0 ± 1.0 ms	(1971HA05)
	115 ± 5 ms	(1969HA2B)
	105 ± 5 ms	(1967ES02)
	107 ± 5 ms	(1967FI10)
	102 ± 7 ms	(1964MC16)

Previous Measurements

 

Decay to 17F* (MeV)	Jπ m	Branching Ratio (%)					log ft				Decay branches e	Branching Ratio (%)
		(2002MO19) n	(1967ES02) a	(1969HA2B) a	(1971HA05)	(1988BO39)	(2002MO19) p	(1969HA2B) b	(1971HA05) c	(1988BO39) d		(2002MO19) n	(1969HA2B)	(1971HA05)
0	5/2+	< 0.55	0.2 f		0.5 ± 0.2 g	0.55 ± 0.17 h	> 6.9	7.3 f	6.95 ± 0.13	9.56 1u +0.16-0.12i
0.495	1/2+	1.59 ± 0.17	0.6 f		1.1 ± 0.5 g	0.61 ± 0.10 h	6.39 ± 0.05	6.8 f	6.55 ± 0.21	6.80 +0.08-0.06i
3.104	1/2-	0.154 ± 0.014	< 1.0	0.49	0.48 ± 0.07	0.10+0.03-0.01	6.94 ± 0.04	6.50 ± 0.07	6.44 ± 0.06	7.12 +0.05-0.11	p0	0.154 ± 0.017	100	100
4.32 j			2.0 ± 0.5
4.640	3/2-	14.1 ± 0.8	19.2 ± 1.0	16.5	16.2 ± 0.7	16.54 ± 0.14	4.645 ± 0.025	4.59 ± 0.02	4.59 ± 0.02	4.57 ± 0.05	p0	14.1 ± 1.2	100	100
5.488	3/2-	49.3 ± 2.7	56.2 ± 1.8	54.9	54.0 ± 0.7	59.16 ± 0.4	3.895 ± 0.024	3.86 ± 0.01	3.86 ± 0.01	3.810 ± 0.015	p0	49.4 ± 4.3	100	100
6.037	1/2-	7.47 ± 0.41	12.4 ± 0.7	10.8	10.6 ± 0.2	7.8 ± 0.2	4.569 ± 0.024	4.44 ± 0.02	4.42 ± 0.01	4.545 ± 0.018	p0	7.48 ± 0.65	100	100
6.43 j			0.9 ± 0.3	0.36	0.35 ± 0.10			5.82 ± 0.10	5.80 ± 0.13		p0		100	100
6.70	5/2+ o		0.4 ± 0.7
7.03	5/2- o		≤ 0.5
7.36-7.48: 4 levels			≤ 0.7
7.75	(1/2+) o			0.18	0.18 ± 0.05			5.70 ± 0.20	5.67 ± 0.12		p0			> 95
											p1			< 5
8.01			4.5 ± 0.4
8.075	3/2-	7.44 ± 0.41		6.9	6.83 ± 0.11	7.3 ± 0.9	3.924 ± 0.024	4.00 ± 0.01	3.96 ± 0.01	3.93 ± 0.06	p0	4.79 ± 0.42		99.5
											p1	0.451 ± 0.041		0.49 ± 0.02
											α0	2.09 ± 0.18
											p2	0.0804 ± 0.0091
											p3	< 0.058
											p4	< 0.0491
8.200	3/2-	4.17 ± 0.20			2.08 ± 0.08 k	1.7 ± 0.3	4.129 ± 0.021			4.51 ± 0.09	p0	0.194 ± 0.018
											p1	< 1.64 × 10-6
											p2	0.48 ± 0.12
											p3	1.78 ± 0.18
											p4	1.51 ± 0.13
											α0	0.215 ± 0.022
8.38	5/2(-) o		0.8 ± 0.1
8.436	1/2-	5.54 ± 0.16		6.6	6.51 ± 0.26	4.0 ± 0.9	3.914 ± 0.013	3.85 ± 0.03	3.85 ± 0.02	4.05 ± 0.10	p0	0.619 ± 0.055		94.3
											p1	1.48 ± 0.13		5.7 ± 0.5
											p3	2.38 ± 0.18
											α0	0.092 ± 0.009
											p2	0.348 ± 0.028
											p4	0.631 ± 0.050
8.825	3/2-	4.82 ± 0.15		1.9	1.90 ± 0.06		3.815 ± 0.014	4.20 ± 0.03	4.23 ± 0.02		p0	0.400 ± 0.036		92.4
											p1	1.70 ± 0.15		7.6 ± 1.1
											p2	0.080 ± 0.012
											p3	1.22 ± 0.10
											p4	1.25 ± 0.10
											α0	0.178 ± 0.017
9.450 l	1/2-					0.6 ± 0.2				4.43+0.19-0.13	p0, p1/p2, α0
		1.89 ± 0.05					3.938 ± 0.012				p0	0.0215 ± 0.0026
											p1	0.457 ± 0.040
											p2	0.145 ± 0.014
											p3	0.901 ± 0.071
											p4	0.308 ± 0.028
											α0	0.0570 ± 0.0058
10.030 l	3/2-	0.64 ± 0.03				0.7 ± 0.3	4.106 ± 0.21			4.06+0.26-0.16	p0	0.0211 ± 0.0026
											p4	< 0.0129
											α0	0.0499 ± 0.0049
											p1	0.446 ± 0.039
											p2	0.0167 ± 0.0052
											p3	0.109 ± 0.013
											p5	< 0.0018
10.660 l	(1/2, 3/2)-	0.81 ± 0.06				0.007 ± 0.004	3.62 ± 0.04			5.7+0.4-0.2	p0	0.0021 ± 0.0009
											α0	0.00066 ± 0.00058
											p1	0.775 ± 0.073
											p2	< 0.0066
											p3	< 0.0076
											p4	< 0.0056
											p5	< 0.02
											p6	0.033 ± 0.029
10.910	1/2-	0.785 ± 0.046				0.016 ± 0.006	3.45 ± 0.03			5.14+0.22-0.17	p0	0.0140 ± 0.0024
											α0	0.0115 ± 0.0016
											p1	0.593 ± 0.054
											p2	< 0.0346
											p3	0.057 ± 0.009
											p4	0.112 ± 0.011
											p5	< 0.0002
											p6	< 1.38 × 10-6
11.193	1/2-	0.765 ± 0.030	0.04 ± 0.01 r	0.61	0.71+0.10-0.05	0.64 ± 0.14 q	3.249 ± 0.018	3.35 ± 0.10	3.29+0.04-0.07	3.31 ± 0.11 q	p0	0.0626 ± 0.0057	12 ± 4	10 ± 2
											p1	0.0446 ± 0.0044	26 ± 8	not observed
											p2	0.244 ± 0.019	not observed	22 ± 2
											p3	0.0043 ± 0.0015	28 ± 13	24 ± 6
											p4	0.182 ± 0.012	34 ± 14	44 ± 4
											α0	0.0024 ± 0.0007
											α1	0.0682 ± 0.0069
											p5	0.120 ± 0.022
											p6	0.0144 ± 0.0041
											α2	0.0016 ± 0.0009
											α3	0.0016 ± 0.0009
12.250	3/2-	≥ 0.0021				0.001 ± 0.0006	≤ 4.7			4.98+0.41-0.23	p0	0.0021 ± 0.0008

a) See also (1964MC16, 1965HA20, 1965MA16).

b) Based on T1/2 = 109 ± 3 ms.

c) Calculated by using an atomic mass excess of 16.517 ± 0.026 MeV and T1/2 = 109.0 ± 1.0 ms. See Table 17.3 in (1977AJ02) for corrected ft values.

d) We are grateful to Dr. M. Martin for providing these log ft values calculated for the branchings measured in (1988BO39).

e) Proton decay to states 16O*(0.0, 6.049, 6.130, 6.917, 7.117, 8.872, 9.585) are indicated by p0, p1, p2, p3, p4, p5, p6, respectively. Alpha decay to 13N*(0.0, 2.365, 3.502, 3.547) are indicated by α0, α1, α2, α3, respectively.

f) From mirror log ft values (1967ES02).

g) Based on the mirror 17N decay.

h) Based on assumption that log ft values are the same as for the 17N mirror decays.

i) From 17N β- decay.

j) Proposed on the basis of the work of (1967ES02).

k) Obtained by (1988BO39) from addition of several of the peaks in (1971HA05).

l) New levels observed by (1988BO39) with measured energies, Ex = 9.450 ± 0.050, 10.030 ± 0.060, 10.660 ± 0.020 MeV and widths Γ =200 ± 40, 170 ± 40, 90 ± 60 keV, respectively.

m) From (2002MO19) except where noted.

n) Absolute branching ratio deduced from (2002MO19) with %βp=95.4 46 and %βα=2.77 19.

o) From Adopted Levels of 17F in ENSDF database.

p) Deduced values using NNDC LOGFT tool.

q) Decay to p3 not observed.

r) Decay to p2 not observed.

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¹⁷C(β^-)¹⁷N Evaluated Data

¹⁷N(β^-)¹⁷O Evaluated Data

¹⁷F(β⁺)¹⁷O Evaluated Data

A = 17 Beta-Decays Diagram

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Last modified: 24 June 2021