A new EPR dosimeter based on Sulfanilic acid (cas 121-57-3)

Add time:09/09/2019    Source:sciencedirect.com

A new radiation dosimeter based on sulfanilic acid was suggested and tested. Radiation-induced radical EPR spectrum was recorded and characterized. EPR spectrum of sulfanilic acid is characterized by its simple single signal, which is located at g-factor=2.0053±0.00017. Its microwave absorption curve and effect of modulation amplitude on signal intensity and line width were studied. The radiation-induced radical was found to be stable after about 24 h following irradiation within ±1.2%. Energy dependence curves of sulfanilic acid compared to soft tissue and alanine were plotted. Sulfanilic acid is characterized also by its isotropic behavior and its calibration curve in 137Cs gamma radiation is plotted compared to that of alanine. Its sensitivity is about 85% of alanine, while its detection limit is about 100±30mGy.

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