A.M. Sourkes

Measurements of proton total reaction cross sections for 6Li, 7Li, 14N, 20Ne and 40Ar between 23 and 49 MeV

Abstract Measurements of proton total reaction cross sections for 6 Li, 7 Li, 14 N, 20 Ne and 40 Ar have been made in the energy range 23 to 49 MeV, using a variation of a standard attenuation technique. The measured cross sections are compared with optical-model and nuclear-transparency calculations.

Proton loss by nuclear inelastic interactions in CsI, NaI, NE102, NE213 and stilbene

Abstract The percentage of protons undergoing nuclear inelastic interactions has been measured in a direct counting experiment, for protons with energies between 20 and 50 MeV incident on CsI, NE102 (plastic scintillator) and Stilbene, and for incident energies between 20 and 150 MeV on NaI. These values have been determined to about 3%, with smaller errors than this at the higher energies and larger errors than this at the low energies. New calculations of this quantity between 20 and 50 MeV have also made, using available reaction cross section information with uncertainties of about 5%. These calculations are compared with the experimental results and show excellent agreement. Other existing reaction percentage information is compared with the present experimental and calculational results and shows good agreement.

Proton-helium total reaction cross sections between 18 and 48 MeV

Abstract Proton total reaction cross sections for 3 He and 4 He have been measured in the energy range 18 to 48 MeV at ten and sixteen energies respectively. Comparison is made with other experimental nucleon-induced reaction information. Comparing the p- 4 He measurements with phase shift analyses, resonating-group calculations, and optical model predictions, points to improvement for the model-dependent theoretical work.

Measurements of the proton total reaction cross section for 24Mg, 64,66,68Zn and 140Ce between 17.5 and 48 MeV☆

Abstract Measurements of proton total reaction cross sections have been made for the deformed nuclei 24 Mg, 64,66,68 Zn and 140 Ce in the energy range 17.5 to 48 MeV using an attenuation technique. The cross sections are compared with various theoretical predictions and with existing data.

Differential cross sections for p + /sup 3/He scattering from 19. 5 to 47. 5 MeV

Differential cross sections for /sup 3/He(p,p)/sup 3/He elastic scattering have been measured at 11 energies from 19.5 to 47.5 MeV. The most forward center-of-mass angle for the angular distributions varies from 10.1 to 13.4/sup 0/, and the most backward angle varies from 163.2 to 173.4/sup 0/. The relative errors are usually less than 2%, and the scale error is 1.5%. The present data and the existing vector-analyzing power and total-reaction cross-section data are being analyzed in this energy range using the Los Alamos Scientific Laboratory R-matrix code EDA.