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Thu Jul 18 22:10:58 2019, Jenn, e768s, OTHER, General, Fixed, , Previous Papers    
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Sat Jul 20 11:33:01 2019, Christian, e768s, OTHER, General, Fixed, , Previous Papers - gamma decays from states in the 4-MeV region
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Sat Jul 20 12:06:00 2019, Christian, e768s, OTHER, General, Fixed, , Previous Papers - gamma decays from states in the 4-MeV region
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Sat Jul 20 12:57:41 2019, Christian, e768s, OTHER, General, Fixed, , Previous Papers - gamma decays from states in the 4-MeV region
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Sun Jul 21 17:57:08 2019, Christian, e768s, OTHER, General, Fixed, , Previous Papers - gamma decays from states in the 4-MeV region
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Mon Jul 22 10:10:02 2019, Christian, e768s, OTHER, General, Fixed, , Previous Papers - alpha-branching ratios for states in the 4-MeV region   
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Thu Jul 25 11:05:18 2019, Francois de Oliveira, e768s, OTHER, General, Fixed, , Previous Papers - alpha-branching ratios for states in the 4-MeV region
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Message ID: 5188
Entry time: Sat Jul 20 11:33:01 2019
In reply to: 5125
Reply to this: 5189
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Author: |
Christian |
ExpNbr: |
e768s |
Type: |
OTHER |
Category: |
General |
Status: |
Fixed |
Target-Source: |
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Subject: |
Previous Papers - gamma decays from states in the 4-MeV region |
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This search was triggered by our lack of seeing the 3958keV line at the expected level. 2689 keV line observed (runs 112,115,116) as 55-60 counts. Expected yield in 3958 keV line based on 80:20 branching and 1.5:1.0 efficiency is 10 counts. We see (at most) 2 in the full photo-peak for this line. (Theses two counts are also lower than expected by about 20 keV.)
The 4.20 MeV to 0.24MeV line in the attached spectrum (p. 2 of J.M.Davidson & M.L.Roush) is one of three spectra by them, on which this branching ratio was based. With the level of detail in these spectra, I think it is fair to question this result. NNDC and TUNL data for branching ratios of this state is entirely based on this paper.
Action: other branching ratios in this region should be checked in this paper to see whether there could be other dubious branchings. |
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