Measurement of ultrasonic attenuation coefficient in polymer gel dosimeters

Melissa L. Mather, Paul H. Charles, Clive Baldock

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52 Citations (Scopus)


A technique is described for investigation of the ultrasonic attenuation coefficient for evaluation of absorbed dose in polymer gel dosimeters. Using this technique the attenuation coefficient as a function of absorbed dose in PAG and MAGIC polymer gel dosimeters was measured. The ultrasonic attenuation coefficient dose sensitivity for PAG was found to be 2.9±0.3 dB m-1 Gy-1 and for MAGIC gel 4.2 ± 0.3 dB m-1 Gy-1. Unlike previous studies of ultrasonic attenuation in polymer gel dosimeters this technique enables a direct measure of the attenuation coefficient.
Original languageEnglish
Pages (from-to)N269-N275
Number of pages7
JournalPhysics in Medicine and Biology
Issue number20
Publication statusPublished - 2003
Externally publishedYes


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