MANTRA: An Integral Reactor Physics Experiment to Infer Actinide Capture Cross-Sections from Thorium to Californium with Accelerator Mass Spectrometry

2011 ◽  
Vol 59 (2(3)) ◽  
pp. 1940-1944 ◽  
Author(s):  
C. McGrath ◽  
G. Youinou ◽  
G. Palmiotti ◽  
G. Imel ◽  
M. Paul ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Cross Sections ◽  
Accelerator Mass Spectrometry ◽  
Capture Cross ◽  
Reactor Physics ◽  
Physics Experiment ◽  
Integral Reactor ◽  
Capture Cross Sections

scholarly journals Investigation of 54Fe(n,γ)55Fe and 35Cl(n, γ)36Cl reaction cross sections at keV energies by Accelerator Mass Spectrometry

2020 ◽  
Vol 232 ◽  
pp. 02005
Author(s):  
Zuzana Slavkovská ◽  
Anton Wallner ◽  
René Reifarth ◽  
Stefan Pavetich ◽  
Lukas Bott ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Cross Sections ◽  
Accelerator Mass Spectrometry ◽  
High Energy ◽  
Reaction Cross ◽  
Reaction Products ◽  
Institute Of Technology ◽  
Karlsruhe Institute ◽  
Reaction Cross Sections ◽  
Capture Cross Sections

Activations with neutrons in the keV energy range were routinely performed at the Karlsruhe Institute of Technology (KIT) in Germany in order to simulate stellar conditions for neutron-capture cross sections. A quasi-Maxwell-Boltzmann neutron spectrum of kT = 25 keV, being of interest for the astrophysical s-process, was produced by the 7Li(p,n) reaction utilizing a 1912 keV proton beam at the Karlsruhe Van de Graaff accelerator. Activated samples resulting in long-lived nuclear reaction products with half-lives in the order of yr 100 Myr were analyzed by Accelerator Mass Spectrometry (AMS). Comparison of the obtained reaction cross sections to literature data from previous Time-of-Flight (ToF) measurements showed that the selected AMS data are systematically lower than the ToF data. To investigate this discrepancy, 54Fe(n,γ)55Fe and 35Cl(n,γ)36Cl reaction cross sections were newly measured at the Frankfurt Neutron Source (FRANZ) in Germany. To complement the existing data, an additional neutron activation of 54Fe and 35Cl at a proton energy of 2 MeV was performed. The results will give implications for the stellar environment at kT = 90 keV, reaching the not yet experimentally explored high-energy s-process range. AMS measurements of the activated samples are scheduled.

THERMAL NEUTRON CAPTURE CROSS-SECTION OF Na23 AND Mn55

1953 ◽  
Vol 31 (3) ◽  
pp. 204-206 ◽  
Author(s):  
Rosalie M. Bartholomew ◽  
R. C. Hawkings ◽  
W. F. Merritt ◽  
L. Yaffe
Keyword(s):  
Thermal Neutron ◽  
Cross Section ◽  
Cross Sections ◽  
Neutron Capture ◽  
Half Life ◽  
Capture Cross Section ◽  
Thermal Neutron Capture ◽  
Capture Cross ◽  
Neutron Capture Cross Section ◽  
Capture Cross Sections

The thermal neutron capture cross sections of Na23 and Mn55 have been determined using the activation method. The values are 0.53 ± 0.03 and 12.7 ± 0.3 barns respectively with respect to σAul97 = 93 barns. These agree well with recent pile oscillator results. The half-life for Mn56 is found to be 2.576 ± 0.002 hr.

Capture Cross Sections for Negative Ions in Rotating Helium II

1965 ◽  
Vol 14 (15) ◽  
pp. 585-587 ◽  
Author(s):  
B. E. Springett ◽  
D. J. Tanner ◽  
R. J. Donnelly
Keyword(s):  
Cross Sections ◽  
Negative Ions ◽  
Capture Cross ◽  
Helium Ii ◽  
Capture Cross Sections
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