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Total MACS at 30keV:

633

±

142

mb

Cross sections do not include stellar enhancement factors!

Version	Total MACS [mb]	Partial to gs [mb]	Partial to isomer [mb]
1.0	633 ± 142	-	-
0.3	584 ± 53	-	-
0.2	687 ± 110	-	-
0.0	703 ± 113*	-	-

(Version 0.0 corresponds to Bao et al.)

Recommended value is weighted average (best representation method) of SUM05 and SMV03. These values were divided for this datasheet by the stellar enhancement factor (SEF) of Rau09 to receive a laboratory MACS. Both are photoactivation measurements (186W(gamma,n)185W) where the (n,gamma) cross section was deduced by Hauser-Feshbach theory with varying input parameters (level density, gamma strength, optical model potential). The uncertainty of both measurements is the experimental uncertainty (SMV03: 10%; SUM05: 6-11%) plus the deviation between the predictions. The MACS vs. kT table is the the average of the predictions of SUM05, normalized by f=1.408. Note that the published values are already stellar MACS.
Last review: February 2014

original	renorm.	year	type	Comment	Ref
253 - 540	450 ± 173	2005	c+t	Laser Compton Scattering, Photoact.; Stellar MACS; Hauser-Feshbach calculations from 186W(gamma,n) with varying input	SUM05
553 ± 60		2004	c+t	same as SUM05: Laser Compton Scattering, Photoact.; Stellar MACS; Hauser-Feshbach calculations from 186W(gamma,n) with varying input	MSU04
640 - 734	687 ± 110	2003	c+t	Bremsstrahlung, Photoact.; Stellar MACS; Hauser-Feshbach calculations from 186W(gamma,n) with varying input	SMV03
585		2005	t	MOST 2005	Gor05
338		2002	t	MOST 2002	Gor02
663		2000	t	NON-SMOKER	RaT99
532 ± 75		1991	t		KJB91
794		1976	t		HWF76

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
t	Theoretical value

Energy	5keV	8keV	10keV	15keV	20keV	25keV	30keV	40keV	50keV	60keV	80keV	100keV
MACS	2255 ± 603	1573 ± 425	1300 ± 354	1030 ± 283	860 ± 241	739 ± 215	633 ± 142	518 ± 170	437 ± 153	377 ± 140	294 ± 118	235 ± 102
Xfactor	1.00	0.98	0.97	0.93	0.88	0.81	0.75	0.63	0.53	0.44	0.31	0.23
SEF	1.00	0.99	0.98	0.95	0.94	0.92	0.92	0.91	0.92	0.94	0.99	1.04
Rate	1.33	1.16	1.07	1.01	0.95	0.90	0.84	0.79	0.76	0.73	0.69	0.65

MACS:
Reference: SUM05,SMV03
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2013

X-factor:
Reference: Rau12
Year: 2012

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

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

	185Os 93.60 d β+ 186Os 1.59 422 mb 187Os 1.6 896 mb 188Os 13.29 399 mb 189Os 16.21 1168 mb 184Re 38.00 d β+ 185Re 37.4 1535 mb 186Re 3.72 d 1550 mb, β- 187Re 41.20x109 y 1160 mb, β- 188Re 17.00 h β- 183W 14.31 515 mb 184W 30.64 223 mb 185W 75.10 d 703 mb, β- 186W 28.43 235 mb 187W 23.72 h β- 182Ta 114.43 d 1120 mb, β- 183Ta 5.10 d β- 184Ta 8.70 h β- 185Ta 49.40 m β- 186Ta 10.50 m β- 181Hf 42.39 d 194 mb, β- 182Hf 8.90 Ma 117 mb, β- 183Hf 1.07 h β- 184Hf 4.12 h β- 185Hf 3.50 m β-

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