Photoelectric Cross-Sections: Comparison Between Experimental and Renormalized and Unrenormalized Theoretical Values

✍ Scribed by B. R. Kerur; S. R. Thontadarya; B. Hanumaiah

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 158 KB
• Volume: 26
• Category: Article
• ISSN: 0049-8246
• DOI: 10.1002/(sici)1097-4539(199701)26:1<45::aid-xrs184>3.0.co;2-#

✦ Synopsis

X-ray attenuation coefficients, determined for four elements and eight compounds at 6.400 and 8.041 keV were l m , used to obtain the total photon cross-section for elements in the range 13 O Z O 30 and for Z = 42 and 73. These were compared with the "present bestÏ values produced by Creagh and Hubbell (ITVC values). Except for those elements whose absorption edges are in the range Ô1 keV AE DE AE + 2 keV all the other ele-

values in close agreement with the ITVC values. The fractional error in the experimental values were l m found to be less than 2% . The derived photoelectric cross-sections were compared with ScoÐeldÏs renormalized and unrenormalized theoretical values. The experimental results were found to be consistently higher than the renormalized theoretical values by about 2-3% .