Neutron resonance spectroscopy: Chlorine

R-Matrix Evaluation of Cl Neutron Cross Sections up to 1.2 MeV

“…As shown in Fig. 10, the final proton width, 0.322 eV, gave SAMMY results that are, within uncertainties, consistent with the ORELA capture and transmission data, the 35 Cl(n,p) data, and the total cross section data of Singh, et al [6]. A small error in transmission determination could account for the difference at the peak (σ total ≈ 100b) of the Singh data.…”

“…Selected information about the data sets used in our analysis is listed in Table I. The total cross section data include measurements by Guber, et al [2] and Good, et al [4], on the 80-m flight path at ORELA; Cierjacks, et al [5], on a 57-m flight path at the Karlsruhe Isochronous Cyclotron; Singh, et al [6] on the 200-m flight path at the Columbia synchrocyclotron; Brugger, et al [7], who utilized a crystal spectrometer and also the MTR fast chopper with a flight path of 45 m; Kiehn, et al [8], with the Rockefeller generator; and Newson, et al [9], at the Duke Van de Graaff facility. The Cierjacks data were normalized to the data of Guber, et al by integrating over the energy range 500 to 1200 keV.…”

“…Singh, et al [6] used the 200-m flight path at the Columbia synchrocyclotron to measure transmissions and determine total cross sections for nat Cl for samples of thickness 0.198, 0.307, and 0.00764 atoms/b over the energy range 0.02 to 400 keV. The authors state that their background determination is rather uncertain for E > 100 keV, and that below 100 eV they adjusted their background values to fit the data of Brugger, et al [7] near 20 and 100 eV.…”

“…. 7 6 Comparison of SAMMY fits (solid line) to the nat Cl total cross section data of Singh, et al [6] for 4 < E n < 400 keV. .…”

“…. 11 10 Comparison of SAMMY fits (solid line) to the nat Cl capture and transmission data of Guber, et al [2], the transmission data of Good, et al [4], the 35 Cl(n,p) data of Druyts, et al [12], and the total cross section data of Singh, et al [6] 35 Cl(n,p) from the present evaluation compared with the data of Druyts, et al [12], Koehler [11], and Gledenov [19]. Existing evaluated nuclear data have been obtained primarily for applications to thermal and fast reactors, and to fusion systems.…”