Semiflex 3D Ion Chamber 31021

• Vented, waterproof, fully guarded - the ideal chamber for relative and reference dosimetry measurements in water, air or solid state phantoms
• True 3D geometry - uniform response in any direction
• Unique design - fast, accurate scanning in in-plane and cross-plane directions without tank rotation or change of detector setup
• Easy horizontal or vertical mounting for high-resolution measurements in both radial and axial orientations
• Reference-class ionization chamber with exceptional dosimetric characteristics - suitable for reference dosimetry following standard dosimetry protocols, e.g., IAEA TRS-398, AAPM TG-51
• Small size (0.07 cm³), high spatial resolution - perfect for measurements in small and FFF fields down to a field size of 2.5 cm x 2.5 cm
• Radioactive check device optionally available

The New Reference Class

Semiflex 3D meets and exceeds the performance requirements of a reference-class ionization chamber as laid out in AAPM TG-51 and IEC 60731:

• Minimal polarity effect (< 0.4 % correction, < 0.5 % maximum variation)
• Extremely low volume effect (est. ≤ 0.05 % correction in FFF field)
• Excellent chamber settling (< 0.3 %)
• Very low post-irradiation leakage - far below IEC 60731 requirements
• Significantly reduced cable effects (< 200 fC / (Gy * cm))
• Minimal chamber-to-chamber variation - reliable kQ and kS values