KADoNiS - Karlsruhe Astrophysical Database of Nucleosynthesis in Stars

Karlsruhe Astrophysical Database of Nucleosynthesis in Stars

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¹⁶⁸Yb ¹⁷⁰Yb ¹⁷¹Yb ¹⁷²Yb ¹⁷³Yb ¹⁷⁴Yb ¹⁷⁵Yb ¹⁷⁶Yb

¹⁶⁸Yb

¹⁶⁹Yb

Total MACS at 30keV:

1214

Cross sections do not include stellar enhancement factors!

Version	Total MACS [mb]	Partial to gs [mb]	Partial to isomer [mb]
0.3	1214 ± 49	-	-
0.0	1160 ± 440*	-	-

(Version 0.0 corresponds to Bao et al.)

Last review: July 9th, 2009

original	renorm.	year	type	Comment	Ref
1214 ± 49		2009	c	VdG, Act., Au:RaK88	MDD09c
700		1971	s		AGM71
886		2000	t		RaT99
971 ± 320		1988	t		ZZC88
1008		1981	t		Har81
1110		1976	t		HWF76
912		2002	t	MOST 2002	Gor02
871		2005	t	MOST 2005	Gor05

Original:MACS [<σ v>/v_T] (mb) for kT=30 keV, based on the published cross sections except where indicated otherwise.
Renorm:MACS [<σ v>/v_T] (mb) for kT=30 keV for which the reference or standard cross section was meanwhile improved.
Type: The letters and numbers in the column labelled 'type' give information on how the cross section has been obtained:

c	Directly quoted from the reference itself
s	Semiempirical estimates given in the reference
t	Theoretical value

Energy	5keV	10keV	15keV	20keV	25keV	30keV	40keV	50keV	60keV	80keV	100keV
MACS	2997	2046	1681	1470	1325	1214 ± 49	1053	937	850	728	649
SEF	1.00	1.00	1.01	1.03	1.06	1.10	1.18	1.24	1.29	1.36	1.42
Rate	1.78	1.72	1.74	1.79	1.87	1.95	2.08	2.18	2.25	2.35	2.45

MACS:
Reference: MDD09c,jeff31
Procedure: 'e+t' (The MACS from kT=5 keV to 100 keV are derived from calculated cross sections, which are then normalized to experimental data, e.g. to the values at kT=25 keV obtained in activation measurements. In these cases the uncertainties should be linearly increased below 25 and above 30 keV to reach about 30% at the extreme kT values.)
Year: 2009

SEF (Stellar enhancement factor):
Reference: Rau09
Year: 2009
Comment:

Rate:
Reaction rate N_A<σv> given in 10⁸ cm³/mole/s, including SEF

¹⁶⁸Hf 25.95 m β⁺	¹⁶⁹Hf 3.24 m β⁺	¹⁷⁰Hf 16.01 h β⁺	¹⁷¹Hf 12.10 h β⁺	¹⁷²Hf 1.87 a β⁺
¹⁶⁷Lu 51.50 m β⁺	¹⁶⁸Lu 5.50 m β⁺	¹⁶⁹Lu 1.42 d β⁺	¹⁷⁰Lu 2.01 d β⁺	¹⁷¹Lu 8.24 d β⁺
¹⁶⁶Yb 2.36 d β⁺	¹⁶⁷Yb 17.50 m β⁺	¹⁶⁸Yb 0.13% 1214 mb	¹⁶⁹Yb 32.02 d β⁺	¹⁷⁰Yb 3.04% 768 mb
¹⁶⁵Tm 1.25 d β⁺	¹⁶⁶Tm 7.70 h β⁺	¹⁶⁷Tm 9.25 d β⁺	¹⁶⁸Tm 93.10 d β⁺	¹⁶⁹Tm 100% 1129 mb
¹⁶⁴Er 1.601% 1084 mb	¹⁶⁵Er 10.36 h β⁺	¹⁶⁶Er 33.503% 563 mb	¹⁶⁷Er 22.869% 1425 mb	¹⁶⁸Er 26.978% 338 mb

Isotope: Ytterbium