Determination of mass attenuation coefficients for threshold contrast evaluation in digital mammography

2010 ◽  
Author(s):  
Johann Hummel ◽  
Friedrich Semturs ◽  
Susanne Menhart ◽  
Michael Figl
Keyword(s):  
Digital Mammography ◽  
Attenuation Coefficients ◽  
Threshold Contrast ◽  
Mass Attenuation Coefficients ◽  
Mass Attenuation

Determination of LIII subshell photoelectric parameters of iridium

2017 ◽  
Vol 95 (5) ◽  
pp. 427-431
Author(s):  
Erhan Cengiz
Keyword(s):  
Form Factor ◽  
Cross Section ◽  
Narrow Beam ◽  
Attenuation Coefficients ◽  
X Ray ◽  
Beam Geometry ◽  
Mass Attenuation Coefficients ◽  
Photoelectric Cross Section ◽  
Mass Attenuation

The LIII subshell photoelectric cross section, jump ratio, jump factor, and Davisson–Kirchner ratio of iridium have been determined by mass attenuation coefficients. The measurements have been performed using the X-ray attenuation method in narrow beam geometry. The obtained results have been compared with the tabulated values of XCOM (Berger et al. XCOM: Photon cross section database (version 1.3). NIST. Available at http://physics.nist.gov/xcom . 2005) and FFAST (Chantler et al. X-ray form factor, attenuation and scattering tables (version 2.1). NIST. Available at http://physics.nist.gov/ffast . 2005).

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