Monica Jaszczak

Teflon Mini FAQ

What is Teflon? Teflon (R) is Polytetrafluoroethylene (or Polyethylene Tetrafluoride). Monomer Formula: C2F4 Monomer Molecular weight: 100.02 Density (g/cm3) = 2.20000E+00 IUPAC International Chemical Identifer: InChI=1/C2F4/c3-1(4)2(5)6 CAS Registry Number: 9002-84-0 Polytetrafluoroethylene’s chemical structure is: F F | | | | ?————C————C———–? | | | | F F What is “virgin Teflon”? Virgin Teflon is “pure” …

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Photon Cross Sections

This calculation by XCOM was performed for an energy range of 10 – 1000 keV. Constituents (Atomic Number: Fraction by Weight) Z=6 : 0.240183 Z=9 : 0.759817   Edge (required) Photon Energy Scattering Photoelectric Absorption Pair Production Total Attenuation Coherent Incoherent In Nuclear Field In Electron Field With Coherent Scattering Without Coherent Scattering MeV cm2/g …

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Please note that some Users’ Manuals and online FAQ entries written prior to this time may have advised using alcohol to more easily rid phantoms, particularly those in the Mini, Micro and Ultra Micro classes, of air bubbles. This is no longer recommended. For any Data Spectrum Phantom, NEVER use any kind of alcohol or …

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