scholarly journals Determination of neutron cross sections and resonance parameters for the stable tellurium isotopes for thallium 205, for the osmium isotopes, and for uranium 238. Progress report, March 1, 1979-November 1, 1979. [Denison Univ. , Granville, Ohio]

1979 ◽  
Author(s):  
R. R. Winters
Keyword(s):  
Cross Sections ◽  
Progress Report ◽  
Resonance Parameters ◽  
Osmium Isotopes ◽  
Neutron Cross Sections

scholarly journals Tuning the Re/Os Clock: Stellar-Neutron Cross Sections

2009 ◽  
Vol 26 (3) ◽  
pp. 250-254 ◽  
Author(s):  
A. Mengoni ◽  
M. Mosconi ◽  
K. Fujii ◽  
F. Käppeler ◽  
Keyword(s):  
Cross Sections ◽  
Reaction Rates ◽  
Experimental Information ◽  
Nuclear Model ◽  
Time Duration ◽  
Model Calculations ◽  
Neutron Time ◽  
Neutron Cross Sections ◽  
Capture Cross Sections

AbstractThe neutron-capture cross sections of 186,187Os have been recently measured at the CERN neutron time-of-flight facility n_TOF for an improved evaluation of the Re/Os cosmo-chronometer. This experimental information was complemented by nuclear model calculations for obtaining the proper astrophysical reaction rates at s-process temperatures. The calculated results and their implications for the determination of the time-duration of nucleosynthesis during galactic chemical evolution is discussed.

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