A1.1.1 The procedures in this annex cover the use of lithium
fluoride TLDs in the form of reusable solid chips. This is done
for illustrative purposes and is not meant to imply that other
types of phosphors, and physical forms of this or other
phosphors, are not suitable for use in radiation processing
dosimetry. Each type and form of TLD requires a different
application procedure (see Refs (1-10) for descriptions of
various types of TLDs). LiF chips have some significant
advantages over some other types and forms of TLDs. Some of
these advantages include radiation absorption characteristics
reasonably similar to water and ease of handling compared to
powders. One disadvantage in using LiF TLDs is a moderate
fading of the TLD response after irradiation. The TLDs
discussed here are for the natural isotopic ratio of 6Li and7Li.
Single isotope 6Li and 7Li type TLDs are generally used in
neutron dosimetry and are not addressed in this practice.