Determination of the thermal neutron capture cross section and resonance integral of 138La

1976 ◽  
Vol 27 (10) ◽  
pp. 533-537
Author(s):  
H. Michael ◽  
A. Neubert ◽  
R. Wagner ◽  
A.J. Blair
Keyword(s):  
Thermal Neutron ◽  
Cross Section ◽  
Neutron Capture ◽  
Capture Cross Section ◽  
Resonance Integral ◽  
Thermal Neutron Capture ◽  
Capture Cross ◽  
Neutron Capture Cross Section

The Thermal Neutron Capture Cross Section and Resonance Integral of 253Es1

1984 ◽  
Vol 37 (2) ◽  
Author(s):  
J. HALPERIN ◽  
R. L. WALKER ◽  
G. D. CKELLEY ◽  
J. H. OLIVER ◽  
J. E. BIGELOW ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Cross Section ◽  
Neutron Capture ◽  
Capture Cross Section ◽  
Resonance Integral ◽  
Thermal Neutron Capture ◽  
Capture Cross ◽  
Neutron Capture Cross Section

THE PURIFICATION, DETERMINATION, AND NEUTRON CAPTURE CROSS SECTION OF ACTINIUM-227

1959 ◽  
Vol 37 (6) ◽  
pp. 1094-1103 ◽  
Author(s):  
M. J. Cabell
Keyword(s):  
Thermal Neutron ◽  
Cross Section ◽  
Neutron Capture ◽  
Capture Cross Section ◽  
Exchange Chromatography ◽  
Thermal Neutron Capture ◽  
Resonance Capture ◽  
Capture Cross ◽  
Neutron Capture Cross Section

Procedures are described for (a) the separation by ion exchange chromatography of submicrogram quantities of Ac227 from its daughters and (b) the absolute determination of Ac227 by measurement of the rate of growth of α-particle emission from an initially pure source. These procedures are utilized in the determination of the reactor and thermal neutron capture cross sections and the resonance capture integral of Ac227 by an activation method.Assuming 36.5 barns for the thermal neutron capture cross section of Co59, a value of σ2200 = 814 ± 13 barns has been obtained for Ac227. The resonance capture integral (from 0.5 ev to ∞) was found to be 1177 ± 19 barns relative to 48.6 barns for the resonance capture integral of Co59.

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