Neutron Fading Characteristics of Copper Doped Lithium Fluoride (LiF: MCP) Thermoluminescent Dosimeters (TLDs)
Abstract
LiF thermo luminescent dosimeters (TLDs) are used by the United States Navy to record radiation exposure of personnel. The DT -648 has been used for many years and has undergone extensive testing to identify its pre-irradiation and post-irradiation fade operating characteristics. Studies have shown that the addition of copper increases the thermoluminesence sensitivity of the TLD for improved low-level radiation monitoring, which prompted the introduction of theDT-702lPD LiF: MCP TLD as a replacement for the DT -648/PD LiF: MT TLD.[4]Using current equipment for processing of TLDs and calibrating to National Institute of Standards and Technology (NIST) standards, this study evaluated the various neutron fading characteristics of the copper-doped dosimeter. The 34week study took place at the Naval Dosimetry Center (NDC), Bethesda, Maryland. The TLDs were stored for pre-specified lengths of time according to a34 week schedule to account for realistic fading effects. The TLDs were irradiated to a Plutonium-Beryllium radiation source before and after storing the TLDs.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 21, 2008
- Accession Number
- AD1013517
Entities
People
- Jeffrey A. Delzer
Organizations
- Uniformed Services University of the Health Sciences