²⁸Si   ²⁹Si   ³⁰Si

Go to isotope

Total MACS at 30keV:

1.82

±

0.33

mb

Cross sections do not include stellar enhancement factors!

Version	Total MACS [mb]	Partial to gs [mb]	Partial to isomer [mb]
0.2	1.82 ± 0.33	-	-
0.0	6.5 ± 0.6	-	-

(Version 0.0 corresponds to Bao et al.)

Previous MACS vs. kT table multiplied by 0.28.
Last review: January 30th, 2006

original	renorm.	year	type	Comment	Ref
1.82 ± 0.33		2003	c	Linac, TOF, Au: Sat.; DC component is 0.48 (30) mb	GKD03
6.5 ± 0.6		1975	r	Linac, TOF, 6Li, Au:Sat. Recalcul. including data of MDH81	BAM75b
1.9		1971	e		AGM71
4.43		2006	e		endfb7
5.75		2004	e		jeff31
5.75		2002	e		jendl33
2.0		2000	t		RaT99
1.5		1978	t		WFH78
7.99		2002	t	MOST 2002	Gor02
7.64		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	34.72	12.04	6.16	3.64	2.46	1.82 ± 0.33	1.06	0.73	0.53	0.36	0.27
SEF	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Rate	2.09	1.02	0.64	0.44	0.33	0.27	0.18	0.14	0.11	0.09	0.07

MACS:
Reference: BAM75b, GDK03
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 10⁶ cm³/mole/s, including SEF

	30S 1.18 s β+ 31S 2.57 s β+ 32S 95.02% 4.1 mb 33S 0.75% 7.4 mb 34S 4.21% 0.226 mb 29P 4.14 s β+ 30P 2.50 m β+ 31P 100% 1.74 mb 32P 14.26 d β- 33P 25.34 d β- 28Si 92.23% 2.9 mb 29Si 4.683% 7.9 mb 30Si 3.087% 6.5 mb 31Si 2.62 h β- 32Si 132.02 a β- 27Al 100% 3.74 mb 28Al 2.24 m β- 29Al 6.56 m β- 30Al 3.60 s β- 31Al 644.00 ms β- 26Mg 11.01% 0.126 mb 27Mg 9.46 m β- 28Mg 20.91 h β- 29Mg 1.30 s β- 30Mg 335.00 ms β-

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