| | Helios 5 CX | Helios 5 UC | Helios 5 UX |
Ion optics | | Tomahawk HT Ion Column with superior high-current performance | Phoenix Ion Column with superior high-current and low-voltage performance |
Ion beam current range | 1 pA – 100 nA | 1 pA – 65 nA |
Accelerating voltage range | 500 V – 30 kV | 500 V – 30 kV |
Max. horizontal field width | 0.9 mm at beam coincidence point | 0.7 mm at beam coincidence point |
Minimum source lifetime | 1,000 hours | 1,000 hours |
| Two-stage differential pumping Time-of-flight (TOF) correction 15-position aperture strip | Two-stage differential pumping Time-of-flight (TOF) correction 15-position aperture strip |
Electron optics | Elstar ultra-high-resolution field emission SEM column | Elstar extreme high-resolution field emission SEM column |
Magnetic immersion objective lens | Magnetic immersion objective lens |
High-stability Schottky field emission gun to provide stable high-resolution analytical currents | High-stability Schottky field emission gun to provide stable high-resolution analytical currents |
Electron beam resolution | At optimum working distance (WD) | 0.6 nm at 30 kV STEM 0.6 nm at 15 kV 1.0 nm at 1 kV 0.9 nm at 1 kV with beam deceleration* | 0.6 nm at 30 kV STEM 0.7 nm at 1 kV 1.0 nm at 500 V (ICD) |
At coincident point | 0.6 nm at 15 kV 1.5 nm at 1 kV with beam deceleration* and DBS* | 0.6 nm at 15 kV 1.2 nm at 1 kV |
Electron beam parameter space | Electron beam current range | 0.8 pA to 176 nA | 0.8 pA to 100 nA |
Accelerating voltage range | 200 V – 30 kV | 350 V – 30 kV |
Landing energy range | 20 eV – 30 keV | 20 eV – 30 keV |
Maximum horizontal field width | 2.3 mm at 4 mm WD | 2.3 mm at 4 mm WD |
Detectors | Elstar in-lens SE/BSE detector (TLD-SE, TLD-BSE) |
Elstar in-column SE/BSE detector (ICD)* |
Elstar in-column BSE detector (MD)* |
Everhart-Thornley SE detector (ETD) |
IR camera for viewing sample/column |
High-performance in-chamber electron and ion detector (ICE) for secondary ions (SI) and electrons (SE)* |
Thermo Scientific In-chamber Nav-Cam Camera for sample navigation* |
Retractable, low-voltage, high-contrast, directional, solid-state backscatter electron detector (DBS)* |
Retractable STEM 3+ detector with BF/ DF/ HAADF segments* |
Integrated beam current measurement |
Stage and sample | Stage | Flexible 5-axis motorized stage | High-precision five-axis motorized stage with Piezo-driven XYR axis |
XY range | 110 mm | 150 mm |
Z range | 65 mm | 10 mm |
Rotation | 360° (endless) | 360° (endless) |
Tilt range | -15° to +90° | -10° to +60° |
Max sample height | Clearance 85 mm to eucentric point | Clearance 55 mm to eucentric point |
Max sample weight | 500 g in any stage position Up to 5 kg at 0° tilt (some restrictions apply) | 500 g (including sample holder) |
Max sample size | 110 mm with full rotation (larger samples possible with limited rotation) | 150 mm with full rotation (larger samples possible with limited rotation) |
| Compucentric rotation and tilt | Compucentric rotation and tilt |