MC-ICPMS | Nu plasma II | Neptune | ||||
Faraday detector | 9 Faraday cups | 7 Faraday cups | ||||
H7 (88) H6 (87) H5 (86.5) H4 (86) H3 (85.5) H2 (85) Ax (84) L1 (83.5) L2 (83) | H2 (88) H1 (87) C (86) L1 (85) L2 (84) L3 (83) L4 (82) | |||||
RF power | 1300 W | 1200 W | ||||
Reflected power | <  1 W | < 2 W | ||||
Auxiliary gas flow rate (Ar) | 0.9 L/min | 0.9 L/min | ||||
Sweep gas flow rate (Ar) | 4~5 L/min | - | ||||
Integration time | 0.2 s | 4.2 s | ||||
Sampler & Skimmer cone | Nickel | |||||
 | Session 1 | Session 2 | Session 3 | Session 4 | Session 5 |  |
ThO+/Th+ (248/232) | 0.77% | 0.21% | 0.16% | 0.34% | 0.68% | - |
Laser (ESI machines NWR 193-nm ArF excimer laser) | Â | |||||
Spot size | 150 μm | 100 μm | 150 μm | 150 μm | 150 μm |  |
88 peak intensity (NIST SRM 610) | 4.5 V | 1.0 V | 1.7 V | 1.7 V | 5.0 V |  |
Ablation mode | Single hole drilling | Â | ||||
Cell | Two volume 2 cell (10 × 10 cm) |  | ||||
Pulse energy density | 8 J/cm2 |  | ||||
Pulse repetition rate | 20 Hz |  | ||||
Ablation duration | 30 s |  | ||||
Carrier gas flow rate (He) | 0.65 L/min |  |