²⁸Si   ²⁹Si   ³⁰Si

Go to isotope

Total MACS at 30keV:

1.42

±

0.13

mb

Cross sections do not include stellar enhancement factors!

Version	Total MACS [mb]	Partial to gs [mb]	Partial to isomer [mb]
0.2	1.42 ± 0.13	-	-
0.0	2.9 ± 0.3	-	-

(Version 0.0 corresponds to Bao et al.)

Previous MACS vs. kT table multiplied by 0.49.
Last review: January 30th, 2006

original	renorm.	year	type	Comment	Ref
1.42 ± 0.13		2003	c	Linac, TOF, Au: Sat.; DC component is 0.23 (11) mb	GKD03
2.9 ± 0.3		1976	r	Linac, TOF, 6Li, Au:Sat. Recalcul. including data of MDH81	KAB76,BAM75b
3.8 ± 1.0		1971	e		AGM71
3.61		2006	e		endfb7
3.61		2004	e		jeff31
1.69		2002	e		jendl33
5.5		2000	t		RaT99
2.4		1978	t		WFH78
30.8		2002	t	MOST 2002	Gor02
18.9		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
r	Recalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
e	Evaluated value taken directly from the reference
t	Theoretical value

Energy	5keV	10keV	15keV	20keV	25keV	30keV	40keV	50keV	60keV	80keV	100keV
MACS	0.14	0.42	0.93	1.22	1.37	1.42 ± 0.13	1.37	1.32	1.22	1.08	0.93
SEF	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Rate	8.43	35.74	96.94	146.84	184.35	209.32	233.19	251.20	254.33	259.97	250.54

MACS:
Reference: KAB76,BAM75b, GKD03
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1976,2003

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

Rate:
Reaction rate N_A<σv> given in 10³ cm³/mole/s, including SEF

	28S 125.00 ms β+ 29S 187.00 ms β+ 30S 1.18 s β+ 31S 2.57 s β+ 32S 95.02% 4.1 mb 27P 260.00 ms β+ 28P 270.00 ms β+ 29P 4.14 s β+ 30P 2.50 m β+ 31P 100% 1.74 mb 26Si 2.23 s β+ 27Si 4.16 s β+ 28Si 92.23% 2.9 mb 29Si 4.683% 7.9 mb 30Si 3.087% 6.5 mb 25Al 7.18 s β+ 26Al 717.12 ka 3.7 mb, β+ 27Al 100% 3.74 mb 28Al 2.24 m β- 29Al 6.56 m β- 24Mg 78.99% 3.3 mb 25Mg 10% 6.4 mb 26Mg 11.01% 0.126 mb 27Mg 9.46 m β- 28Mg 20.91 h β-

Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)