Compact, attractive reader has a linear, programmable heating system and a cooled photomultiplier tube with associated electronics to measure the TL light output. The WinREMS Software, which runs on a separate computer, provides the user interface, the reader control and the applications software.
- Easy operation, service and maintenance
- Measurement quality assurance
- Unattended automatic operation for up to 50 dosimeters
- Thermoelectric PMT cooler for maximum gain stability
- Unattended automatic background subtraction capability
- Multiple, programmable, linear time-temperature profiles; heating profile includes pre-heat, acquire and anneal cycles
- Linear contactless hot gas heating with temperature capability up to 600°C (1112°F)
- Seven decade dynamic acquisition ranges
- 30 sec. cycle time per chip with normal TTP
- Withstands 20mm drop on to concrete surface
- Maintains specifications while exposed to light up to 1000 lux with cover in place
- Options include glow curve deconvolution software, neutral density filters, and calibration software
Dosimetry Performance When Using LiF:Mg,Ti Chips (TLD-100):
- Tissue equivalence: Nearly tissue equivalent
- Batch uniformity: ±15% standard deviation from the batch mean, tighter on special request
- Residual TL signal: <0.2% of reading, over the range, without annealing
- Reuse: more than 500 per dosimeter with <10% sensitivity charge
- Threshold: <10 µGy (1 mrad) based on 2.26 standard deviation of 10 repeat readings of an unexposed dosimeter
Light Detection System
- Dynamic range: 7 decades
- Warmup time: 30 min.
- Linearity: <1% deviation
- Stability: <1.0 mGy standard deviation of 10 consecutive readings
- Dark current: <50 mGy 137Cs equivalent
- Test light: temperature-stabilized LED
- Stability: <0.5% standard deviation of 10 consecutive readings
- Color: blue (wavelength 470 nm)
Dosimeter Heating System
- Method: linear hot nitrogen gas
- Time/Temperature Profile (TTP) temperature reproducibility: (±1°C)
Ordering Alerts: Computer requirements (minimum): Intel* Pentium*-compatible PC, 120MHz; 64MB RAM; 4GB hard drive; VGA color monitor, 800 x 600 resolution minimum; Mouse and keyboard; CD-ROM drive; One RS232 serial port for connection to Model 5500; One parallel port for printer; Windows* operating system
Includes: automatic sample changer and carrier disk
Recommended for: - Radiotherapy planning verification
- Radiation hardness verification
- Total body irradiation dose verification
- Skin irradiation dose verification
- Stereotactic beam output factor measurement
- Critical organ dose verification
- Diagnostic dose studies
- CT dose measurement for quality assurance
- Environmental dosimetry
- Testing for irradiated food
- Radioactive dating
- Mammography
