Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Thulium (Z=69)
  169Tm   170Tm   171Tm   172Tm
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
171Tm 172Tm




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0228 ± 20--
0.0486 ± 144*--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is from activation measurement of RHH03, which was extrapolated with normalized energy-dependence of RaT (f=0.594). TOF measurement of WCD02 not considered due to problems with proper background correction (see RHH03).
Last review: December 2013
List of all available values
originalrenorm.yeartypeCommentRef
350 ± 30
25 keV
228 ± 202003,2013rVdG, Act., 1/v(kT), Au:RaK88; recalc. using energy dep. from RaT99 RHH03
904
2002rTOF; W Spall., AuWCD02
243
2005tMOST 2005Gor05
309
2002tMOST 2002Gor02
399
2000tNON-SMOKERRaT99
1332
1981tHar81
637
1976tHWF76


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
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
566
-
406
328
282
251
228 ± 20
196
174
157
134
118
Xfactor0.500.420.360.320.290.280.260.230.210.180.140.12
SEF1.151.211.251.291.321.341.361.391.421.461.521.57
Rate
3.86
-
4.25
4.35
4.41
4.45
4.49
4.57
4.65
4.70
4.83
4.92

MACS:
Reference: RHH03,RaT99
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: 2003,2013

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
171Lu
8.24 d
β+
172Lu
6.70 d
β+
173Lu
1.37 a
β+
174Lu
3.31 a
β+
175Lu
97.41
1146 mb
170Yb
3.04
768 mb
171Yb
14.28
1210 mb
172Yb
21.83
341 mb
173Yb
16.13
754 mb
174Yb
31.83
151 mb
169Tm
100
1129 mb
170Tm
128.59 d
1870 mb, β-
171Tm
1.92 a
486 mb, β-
172Tm
2.65 d
β-
173Tm
8.24 h
β-
168Er
26.978
338 mb
169Er
9.39 d
653 mb, β-
170Er
14.91
170 mb
171Er
7.52 h
β-
172Er
2.05 d
β-
167Ho
3.00 h
β-
168Ho
2.99 m
β-
169Ho
4.72 m
β-
170Ho
2.76 m
β-
171Ho
53.00 s
β-
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Isotope: Thulium