ONYX®: OSL ring dosimeter
The ONYX is a passive ring dosimeter compatible with OSLR reader.
It measures X-rays, gamma rays and beta radiation.
Specially designed for dosimetry labs, its functional design minimizes your set-up time.
- Easy assembly
- Clip-on parts
- Reusable
- holder and MP7 OSL Sensor tracability with 2D barcode
Discover ONYX service cycle
Last ned datablad
Characteristics
This comfortable ring lets you focus on your work, not on your dosimeter.
The ONYX dosimeter ring is flexible, comfortably fitting your finger. It is available in two sizes to ensure comfort for everyone and 3 colours for easier wear period identification.
The ring is light, easy to wear, and thin enough not to hinder your movements.
The ONYX ring has rounded edges ensuring comfort and eliminating the risk of tearing gloves or slipping off when gloves are removed. ONYX stands up to everyday wear and tear, even when washing hands. It cannot lose its shape.
Technical specifications
| Energy range | Photons | ± 60° incidence angle from 15 keV to 1.33 MeV | |
| Beta | ± 60° incidence angle (Emean = 0.8 MeV; 90Sr/90Y) | ||
| Dose range | 100 μSv – 10 Sv | ||
| Types of radiation measured | Photons (X- and gamma rays) and beta | ||
| Detector | Single MP7 OSL sensor | ||
| Sensor material | Aluminium oxide doped with carbone, Al2O3:C | ||
| Holder material | Polyethylene | ||
Dimensions
Two sizes to match worker finger shape
Weight:
- M – 1.05g
- L – 1.30g
Finger size (Circumference in mm) :
- M – 44 (Minimum) – 47 (Medium) – 63 (Maximum)
- L – 53 (Minimum) – 57 (Medium) – 69 (Maximum)
Measurement method
MP7 OSL sensor
This ring uses a novel tissue equivalent MP7 OSL sensor. The OSL material is made from Aluminium oxide doped with Carbon (Al2O3:C).
The dose is measured using the OSLR readers.
The read out process uses a LED (Light Emitting Diode) to stimulate the detectors. The light emitted by the OSL material is measured by a photomultiplier tube (PMT) using a high sensitivity photon counting system.
The amount of light released during optical stimulation is directly proportional to the radiation dose.
Performance assessment
Performance assessment against NF EN 62387 (2016).
LANDAUER offers a complete service
- advice and tailored solutions for your needs
- delivery and on-site commissioning
- training on operation and first-level maintenance
- on-site and factory maintenance
- phone and email support