1996JA10: ⁷Be(EC); measured E_γ, I_γ, T_1/2.

1999HU20: ⁷Be(EC); measured E_γ, I_γ, T_1/2.

1999RA12: ⁷Be(EC); measured T_1/2 for source implanted in various materials.

2000HU20: ⁷Be(EC); measured E_γ, I_γ(t), T_1/2.

2000LI21: ⁷Be(EC); measured T_1/2; deduced dependence on pressure.

2001NO10: ⁷Be(EC); measured E_γ, I_γ, T_1/2 for sources implanted in various materials; deduced environmental effects.

2003LI22: ⁷Be(EC); measured T_1/2 for source implanted in various materials; deduced no environmental effect.

2004OH09, 2005OHZW, : ⁷Be(EC); measured E_γ, I_γ, T_1/2 for source in beryllium metal.

2004OH10: ⁷Be(EC); measured E_γ, I_γ, T_1/2 for source implanted in various metals; deduced environmental effect.

2005FU13: ⁷Be(EC); measured T_1/2 for source implanted in metals; deduced no environmental effects.

2005ZH09: ⁷Be(EC); measured decay rates for source implanted in various metals.

2006LI46: ⁷Be(EC); measured T_1/2 for source embedded in several materials; deduced no environmental effect.

2006NIZU: ⁷Be(EC); measured T_1/2 for source in various host materials; deduced no environmental dependence.

2006RA07: ⁷Be(EC); measured T_1/2 for source implanted in various materials; deduced environmental effects.

2006WA21: ⁷Be(EC); measured T_1/2 for source implanted in various materials; deduced environmental effects.

2007NI02: ⁷Be(EC); measured T_1/2 for source in various host materials; deduced no environmental dependence.

2008KU09: ⁷Be(EC); measured dependence of decay rate on temperature. Be in Cu host. No evidence found for temperature dependence on half-life.

2008LI20: ⁷Be(EC); measured T_1/2 in different metallic environments.

1972SZ02: ⁷Be(EC); measured branching ratio for ⁷Be(EC)⁷Li; deduced S(E).

1974GO26: ⁷Be; measured βγ-coin; deduced β-branching ratio.

1981SA22: ⁷Be; measured IB spectra; deduced Q(EC).

1983BA15: ⁷Be(EC); measured I_γ. ⁷Li level deduced EC-branching ratio.

1983DA14: ⁷Be(EC); measured E_γ, I_γ. ⁷Li level deduced EC-branching ratio.

1983DO07: ⁷Be(EC); measured E_γ, I_γ. ⁷Li level deduced EC-branching ratio.

1983KN10: ⁷Be(EC); measured internal bremsstrahlung spectra. ⁷Li levels deduced EC-branching ratios.

1983KU03: ⁷Be(EC); measured E_γ, I_γ, pair spectra. ⁷Li transition deduced E_γ.

1983MA34: ⁷Be(EC); measured E_γ, I_γ. ⁷Li level deduced EC-branching ratio.

1983NO03: ⁷Be(EC); measured I_γ. ⁷Li level deduced EC-branching ratio.

1984EV01: ⁷Be(EC); measured I_γ; deduced vector coupling constant G(A). ⁷Li level deduced EC-branching ratio.

1984FI10: ⁷Be(EC); measured I_γ. ⁷Li levels deduced electron capture branching ratio.

1984SK01: ⁷Be(EC); measured I_γ. ⁷Li levels deduced branching.

1993CH32: ⁷Be(EC); measured E_γ.

1995RE24: ⁷Be(EC); measured E_γ, I_γ.

1996JA10: ⁷Be(EC); measured E_γ, I_γ, T_1/2.

1998GA08: ⁷Be(EC); measured K, L capture X-ray spectra.

1999HU20: ⁷Be(EC); measured E_γ, I_γ, T_1/2.

2000HU20: ⁷Be(EC); measured E_γ, I_γ(t), T_1/2.

2001NO10: ⁷Be(EC); measured E_γ, I_γ, T_1/2 for sources implanted in various materials; deduced environmental effects.

2002VO01: ⁷Be(EC); measured X-ray spectra; deduced L/K capture ratio, possible in-medium effects.

2007OH02: ⁷Be(EC); measured decay rate in C₆₀ at liquid helium temperature.

Measured half-life for ⁷Be(ε)⁷Li

Adopted value:	53.22 ± 0.06 days	(from LRSW, (1985ZIZY, 1992RA09) analysis)
Measured values:	53.42 ± 0.01 days	(2000HU20)
	53.12 ± 0.07 days	(1996JA10)
	53.284 ± 0.004 days	(1982RUZV)
	53.16 ± 0.01 days	(1982CHZF)
	53.17 ± 0.02 days	(1975LA16)
	53.0 ± 0.3 days	(1974CR05)
	53.52 ± 0.10 days	(1970JO21)
	53.1 ± 0.3 days	(1965EN01)
	53.5 ± 0.2 days	(1957WR37)
	53.0 ± 0.4 days	(1956BO36)
	53.61 ± 0.17 days	(1953KR16)
	52.93 ± 0.22 days	(1949SE20)
	53 ± 2 days	(1940HI01)

Previous Measurements

 

Branching Ratio to 7Li*(0.48) (%)		Eγ (keV)		Log ft for
					7Li(0)	7Li*(4.8)
(1938RU01)	10+20-7	(ZA48)	474 ± 4	MA54H	3.33	3.48
(1949WI13)	10.7 ± 2.0	(1948KU10)	485 ± 5	1959AJ76	3.25	3.44
(1949TU06)	11.8 ± 1.2	(HO49A, RA49A)	476.7 ± 0.8	G. Fox and B. Zimmerman, private communication to Fay Ajzenberg-Selove (1974AJ01)	3.30	3.54
(1951DI12)	12.3 ± 0.6	(TE49B)	478.5 ± 0.5
(1962TA11)	10.32 ± 0.16	P. Marmier, private communication to Fay Ajzenberg-Selove (1955AJ61)	477.3 ± 0.4
(1969TAZX)	10.35 ± 0.08			M.J. Martin, private communication to Fay Ajzenberg-Selove (1979AJ01)	3.32	3.55
(1970MUZU)	10.47 ± 0.20
(1972SZ02)	10.4 ± 0.3	(1957DU37)	477.3 ± 0.4
(1973PO10)	10.42 ± 0.18	(1965RO09)	477.4 ± 0.2
(1974GO26)	10.35 ± 0.08	(1967BL03)	477.57 ± 0.05
(1983BA15)	10.10 ± 0.45	(1971HE20)	477.593 ± 0.012
(1983DA14)	10.61 ± 0.23	(1978HE21)	477.605 ± 0.003
(1983DO07)	10.6 ± 0.5	(1983KU03)	477.6064 ± 0.0026
(1983FIZV)	10.7 ± 0.3	(1993CH32)	477.60323 ± 0.00041
(1983KN10)	10.9 ± 1.1
(1983MA34)	10.7 ± 0.2
(1983NO03)	9.8 ± 0.5
(1983TAZY)	10.3 ± 1.1
(1984EV01)	11.4 ± 0.7
(1984FI10)	10.61 ± 0.17
(1984SK01)	10.49 ± 0.07

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Last modified: 08 July 2009