Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Samarium (Z=62)
  144Sm   147Sm   148Sm   149Sm   150Sm   151Sm   152Sm   153Sm   154Sm
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
148Sm 149Sm




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.0241 ± 2--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
240.7 ± 2.2
1993cVdG, TOF, Au:RaK88,Mac82eWGV93
277 ± 13
2641986cVdG, TOF, Au:B-VWKW86
281 ± 23
2601978cVdG, TOF, 10B:Mag75, Au:628mb(kT=30keV)KYP78
257 ± 50
1967cVdG, TOF, 181Ta:762mbMaG67a
235
1979eIWY79
260 ± 50
1971eAGM71
245.1
2006eendfb7
330.5
2004ejeff31
244.5
2002ejendl33
249
2000tRaT99
225
1995tTDK95
262
1986tWKW86
282
1981tHar81
288
1976tHWF76
131
2002tMOST 2002Gor02
130
2005tMOST 2005Gor05


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:
cDirectly quoted from the reference itself
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
664
415
330
287
259
241 ± 2
217
203
194
183
175
SEF1.001.001.001.001.001.001.001.001.001.001.01
Rate
3.94
3.48
3.39
3.41
3.44
3.50
3.64
3.81
3.99
4.36
4.70

MACS:
Reference: WGV93
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: 1993

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
148Gd
70.89 a
α
149Gd
9.28 d
β+
150Gd
1.79 Ma
α
151Gd
124.00 d
β+
152Gd
0.2%
1049 mb
147Eu
24.10 d
β+
148Eu
54.50 d
β+
149Eu
93.10 d
β+
150Eu
36.89 a
β+
151Eu
47.81%
3775 mb
146Sm
102.99 Ma
α
147Sm
106.00x109 y
973 mb, α
148Sm
11.24%
241 mb
149Sm
13.82%
1820 mb
150Sm
7.38%
422 mb
145Pm
17.70 a
β+
146Pm
5.53 a
β+
147Pm
2.62 a
1290 mb, β-
148Pm
5.37 d
2453 mb, β-
149Pm
2.21 d
2510 mb, β-
144Nd
23.8%
81.3 mb
145Nd
8.3%
425 mb
146Nd
17.2%
91.2 mb
147Nd
10.98 d
544 mb, β-
148Nd
5.7%
147 mb
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Samarium