¹⁷⁴Hf   ¹⁷⁶Hf   ¹⁷⁷Hf   ¹⁷⁸Hf   ¹⁷⁹Hf   ¹⁸⁰Hf   ¹⁸¹Hf   ¹⁸²Hf

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Total MACS at 30keV:

338

±

4

mb

Cross sections do not include stellar enhancement factors!

Version	Total MACS [mb]	Partial to gs [mb]	Partial to isomer [mb]
1.0	338 ± 4	-	-
0.2	319 ± 3	-	-
0.0	314 ± 10	-	-

(Version 0.0 corresponds to Bao et al.)

Rec. value and MACS vs. kT table is from WVK06b. Value at kT= 5 keV extrapolated from normalized value of jendl40 (f(norm)= 0.99). Isomeric ratio at E(n)= 75(25) keV is IR= 0.81 (2) WVK06b.
Last review: In process

original	renorm.	year	type	Comment	Ref
319 ± 3	338 ± 4	2004	d	VdG, TOF, Au:RaK88	Wis04d,WVK06b
346 ± 27 E(n)= 30 (2) keV		1992	c	VdG, TOF, Au+Ag+Nd+etc.:Sat.	BKP92
310 ± 10		1982	c	Linac, TOF, 6Li, Au:Sat.	BeM82
296.9		2011	e	ENDF/B-VII.1	endfb71
362.4		2011	e	JENDL-4.0	jendl40
305.0		2006	e	ENDF/B-VII.0	endfb7
297.2		2004	e	JEFF-3.1	jeff31
297.2		2002	e	JENDL-3.3	jendl33
330		1976	e	quoted from BKW82	DSM76
370		1971	s		AGM71
336		2005	t	MOST 2005	Gor05
367		2002	t	MOST 2002	Gor02
395		2000	t	NON-SMOKER	RaT99
583		1981	t		Har81
510		1976	t		HWF76
Partial cross section to 179mHf:
217 ± 27 E(n)= 25 (5) keV		1972	c	Sb-Be, Act., 1/v(E), 127I:832(26) mb	SRS72

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:

d	Renormalized 2017 based on updated Au measurement
c	Directly quoted from the reference itself
e	Evaluated value taken directly from the reference
s	Semiempirical estimates given in the reference
t	Theoretical value

Energy	5keV	8keV	10keV	15keV	20keV	25keV	30keV	40keV	50keV	60keV	80keV	100keV
MACS	847 ± 51	647 ± 23	574 ± 16	468 ± 9	409 ± 6	368 ± 5	338 ± 4	292 ± 4	260 ± 3	235 ± 3	200 ± 4	177 ± 5
Xfactor	1.00	1.00	1.00	0.98	0.93	0.84	0.74	0.57	0.45	0.36	0.26	0.19
SEF	1.00	1.00	1.00	1.01	1.03	1.06	1.10	1.18	1.25	1.31	1.41	1.51
Rate	5.02	4.85	4.81	4.84	4.99	5.19	5.42	5.79	6.08	6.30	6.70	7.09

MACS:
Reference: Rei18
Procedure: 'd' (Renormalized 2017 based on updated Au measurement)
Year: 2018

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate N_A<σv> given in 10⁷ cm³/mole/s, including SEF

	178W 21.60 d β+ 179W 37.05 m β+ 180W 0.12 660 mb 181W 121.20 d β+ 182W 26.5 274 mb 177Ta 2.36 d β+ 178Ta 9.31 m β+ 179Ta 1.82 a 1334 mb, β+ 180Ta 8.15 h 1640 mb, β+ 181Ta 99.988 766 mb 176Hf 5.26 455 mb 177Hf 18.6 1500 mb 178Hf 27.28 314 mb 179Hf 13.62 956 mb 180Hf 35.08 179 mb 175Lu 97.41 1146 mb 176Lu 37.61x109 y 1532 mb, β- 177Lu 6.65 d β- 178Lu 28.40 m β- 179Lu 4.59 h β- 174Yb 31.83 151 mb 175Yb 4.18 d 558 mb, β- 176Yb 12.76 115.8 mb 177Yb 1.91 h β- 178Yb 1.23 h β-

Style: (S, M, L, XL or Alberto)