Component(1) | Fraction by weight | A | Z | (Z/A) |
Density [g/cm3] |
Radiation Length [cm] |
Radiation Length [g/cm2] |
---|---|---|---|---|---|---|---|
glass fiber (E-Glass) | 0.60 | 23.6365 | 11.7291 | 0.49628 | 2.61 (a) | 9.76601 | 25.4893 |
Epoxy resin Epotek 301-1 | 0.40 | 11.8991 | 5.9883 | 0.50326 | 1.19 (COI epoxy) | 34.9894 | 41.6374 |
G10-FR4 | 18.9415 | 9.4328 | 0.49799 | 1.80 (2) | 16.7608 | 30.1695 | |
NEMA G10 from PDG typically 60% SiO2 and 40% epoxy |
1.7 | 19.4 | 33.0 |
(1) | For the composition, the PDG typcal values have been used (b1, b2) : 60% glass-fiber and 40% epoxy, by weight. The E-glass type was used since it is compatible with both G10 and FR4 (c1), c2) |
(2) | The density of G10 ranges from 1.6 (c2) to 1.77 and to 1.91(e1, e2) g/cm3 |
Calculation performed using the method described here and imposing the density of the compound.
The corresponding definition of this material in
/* $Id: AliITSvPPRasymm.cxx,v 1.70 2003/08/14 20:24:51 nilsen Exp $ */is :
AliMaterial(25,"G10FR4$",0.17749E+02,0.88750E+01,0.18000E+01,0.21822E+02,0.99900E+03);