Table 2 Characteristics of the portable micro-XRF used in this study.
From: Characterization of Castellani nineteenth-century gold jewellery by in situ micro-XRF spectroscopy
X-ray tube | Rtw MCBM 50-0, 6B W |
Anode | W |
Max voltage; max current | 50 kV; 0.6 mA |
Primary filter | 1 mm thick, aluminium |
X-ray beam focusing system | Full lens polycapillary 115mls03 |
Spot size | ≈ 30 μm |
Working distance | 10 mm |
Pointing system | Optical microscope VZM 1000i, 2.5×–10×, Edmund optics |
2 Micro laser diode modules, 3 mW–635 nm, Edmund Optics | |
X-ray detector 1 (without filter) | SDD, Amptek, X-123 |
Area; thickness | 6 mm2; 500 µm |
Be window | 25 µm thickness |
Energy resolution | 153 eV FWHM at 5.89 keV |
Secondary filter | No |
X-ray detector 2 (with Zn filter) | Super SDD, Amptek, XR-100SDD |
Area; thickness | 25 mm2; 500 µm |
Be window | 12.5 µm thickness |
Energy resolution | 137 eV FWHM at 5.89 keV |
Secondary filter | Zinc filter (20 µm thick) |
Excitation/detection geometry | 90°/45° |
Weight | c. 35 kg (whole equipment) |
c. 5 kg (measuring head) |
