Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Arsenic (Z=33)
  75As   76As   77As
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
75As 76As




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0383 ± 20--
0.3362 ± 19--
0.0568 ± 35--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is from MDD09 using the normalized energy dependence of endfb71 (normalization by f=0.79). This value has been renormalized by f= 1.0785 (632 mb/586 mb) due to corrected Gold cross section from RaK88 for activations.
Last review: June 2016
List of all available values
originalrenorm.yeartypeCommentRef
362 ± 19
383 ± 202009rVdG, Act., Au:RaK88 corrected by 632/586= 1.0785; renorm. using energy dependence of endfb71MDD09
455 ± 18
1988cLinac, TOF, 6Li, Au:Sat.Mac88a
576 ± 35
5991986cVdG, Act., 1/v(kT), Au:657mb(25keV) renorm. by 683/657=1.04WBK86b
371 ± 36
3101979cF.N.B., Act., 1/v(E), 127I:832mb(25keV)AJB79
143
1531970cSb-Be, Act., 1/v(E), Au:640mb(24keV) renorm. by 683/640=1.07ChP70
408
2015eTENDL-2015 using the TALYS codetendl15
451.5
2011eENDF/B-VII.1endfb71
444.9
2011eJENDL-4.0jendl40
399.5
2004eJEFF-3.1jeff31
450.2
2002eJENDL-3.3jendl33
490 ± 100
1971eAGM71
347
2005tMOST 2005Gor05
497
2002tMOST 2002Gor02
295.5
2000tNON-SMOKERRaT99
408
1981tHar81
330
1978tWFH78


Original:MACS [<σ v>/vT] (mb) for kT=30 keV, based on the published cross sections except where indicated otherwise.
Renorm:MACS [<σ v>/vT] (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:
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
cDirectly quoted from the reference itself
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1154
-
752
586
490
427
383 ± 20
322
284
255
212
183
Xfactor1.001.001.001.001.001.001.001.000.990.970.900.81
SEF1.001.001.001.001.001.001.001.000.990.970.930.88
Rate
6.87
-
6.33
6.04
5.83
5.68
5.58
5.40
5.28
5.12
4.70
4.30

MACS:
Reference: MDD09,endfb71
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: 2015

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei
up
left
75Br
1.61 h
β+
76Br
16.20 h
β+
77Br
2.38 d
β+
78Br
6.46 m
β+
79Br
50.69
622 mb
74Se
0.89
267 mb
75Se
119.78 d
β+
76Se
9.37
164 mb
77Se
7.63
418 mb
78Se
23.77
109 mb
73As
80.30 d
β+
74As
17.77 d
β+
75As
100
362 mb
76As
1.09 d
β-
77As
1.62 d
β-
72Ge
27.31
73 mb
73Ge
7.76
243 mb
74Ge
36.73
37.6 mb
75Ge
1.38 h
β-
76Ge
7.83
21.5 mb
71Ga
39.892
123 mb
72Ga
14.10 h
β-
73Ga
4.86 h
β-
74Ga
8.12 m
β-
75Ga
2.10 m
β-
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Style: (S, M, L, XL or Alberto)


Isotope: Arsenic