Notes

+Present address: Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK.

11012 photons s-1 × 12398 eV photon-1 × 1.6 × 10-19 J eV-1 = 2 mW.

2Density: 2.33 g cm-3; photoelectric cross section: 16.5 cm2 g-1 at 12.66 keV.

3e = 1.6022 × 10-19 C.

4Density of crystalline NaI: 3.67 g cm-3; photoelectric cross section: 72.6 cm2 g-1 at 12.66 keV.

5Density: 1.86 g cm-3; total cross section 0.4 cm2 g-1 at 12.66 keV.

6Thickness: 23.24 µm; density: 2.7 g cm-3; 98.5% Al, 0.75% Fe, 0.75% Si; total cross section: 13.7 cm2 g-1 at 12.66 keV.

7Fraction of current observed by amplifier: 1/[(1/3.37) + 1] = 1/1.30 = 0.77.