Total Photon Interaction cross-section measurements for some selected elements at 22,2,,59,6 and 88,8 keV

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Date
1984
Journal Title
Journal ISSN
Volume Title
Publisher
University of Dar es Salaam
Abstract
The total proton interaction cross-sections for the elements A2 (Z=13), Cu, Zn, Cd, In and Sn (29<z<50) at proton energies 22.2, 59.6 and 88.8 keV have been measured . The measurements for Cd and In at these energies have been carried out for first time. The corresponding photoelectric cross-sections have been to be in good agreement with their corresponding theoretical values available in the literature. For four measurements a good geometry set up was designed and used which, once set, remained fixed. It could be disturbed and reset for a new run. The detector system used consisted of a liquid nitrogen- cooled X-ray HPGe detector with effective area 0.5 cm2, crystal thickness 0.5 cm and Be window 2 mil thick (resolution approximately 188 eV at 5.9 keV of Mn Ka-line). The absorbers used were spectroscopically pure (99.9%). For our use we machined them into circular shapes each with a uniform thickness. The pulses from the detector, after shaping and proper amplification, were fed to a CANBERRA MCA model 8100 with 4096 channels, where the final spectra were recorded during a preset collection time. The collected counts were later on corrected for background counting’s and the analysis was done with great precision.
Description
Available in print form, East Africana Collection, Dr.Wirbert Chagula Library, Class mark (THS EAF QC715.M37 1984)
Keywords
Photon beams (physics), Photon Correlation, Study
Citation
Mashauri, C. D (1984) Total Photon Interaction cross-section measurements for some selected elements at 22,2,,59,6 and 88,8 keV, Masters dissertation, University of Dar es Salaam, Dar es Salaam.