Dosimetry

Modern Single-Channel Analyzers for Scintillator-PMT Systems When you’re working with scintillator + photomultiplier-tube (PMT) radiation-detection systems, the counting electronics matter. The right single-channel analyzer (SCA) can streamline setup, reduce calibration burdens, and improve measurement reliability. In this post, we’ll walk through complementary SCA modules offered by Rotunda Scientific Technologies and how they address these lab challenges. Why Traditional SCAs Can Slow You Down Many labs still rely on separate modules for high-voltage supplies, preamplifiers, amplifiers, discriminators, and counting electronics. That often results in: Long setup times and complex wiring Manual adjustments on analog electronics that may drift Large physical footprint...

Compact, Accurate, and Reusable: The myOSLchip Advantage
Discover how the myOSLchip is transforming individual and clinical dosimetry. This small but powerful optically stimulated luminescence (OSL) dosimeter delivers precise, re-readable dose tracking and integrates smoothly with OSLDosimetry software—making it a smart, sustainable choice for clinical and research dosimetry in healthcare and related fields.

April 3, 2025 – Mansfield, Ohio – Rotunda Scientific Technologies LLC is excited to announce an expanded partnership with Aerial-CRT, a global leader in dosimetry solutions. As part of this collaboration, Rotunda is now the official distributor in the Americas of DosASAP, Aerial-CRT’s advanced dosimetry system designed specifically for use in electron beam (E-Beam) and X ray radiation processing facilities.

Have you ever wondered why the Harshaw TLD dose algorithms based on LiF:Mg,Ti have 8 days pre and post irradiation built into their calculations?

During the process of calibrating the dose algorithm you need to prepare dosimeters for the “Cs¹³⁷ Relative Response” factors and possibly beta and neutron calibration factors if you also need them calibrated. This is the time where the 8 days of pre- and post-irradiation come into consideration.

Accounting for Fade in LiF:Mg,Ti TLD Systems Reducing uncertainty in calibration and routine dose readout. Do you consider fade when calibrating your TLD system and performing dose readouts? If you are using TLD-100, 600, or 700 (LiF:Mg,Ti), fade must be incorporated into your readout protocol. For systems using TLD-100H, 600H, or 700H (LiF:Mg,Cu,P), fade is minimal when using the factory-recommended Time Temperature Profile (TTP) and is typically not a concern. Reducing Short-Term Uncertainty When performing calibrations for the Reader Calibration Factor (RCF) or Element Correction Coefficient (ECC), Harshaw recommends: Wait 24–48 hours after annealing before irradiation. Wait 24–48 hours after...