Dosimetric characterization of a Nickel complex for routine use in radiation processing

Area of Science:

• Radiation Chemistry
• Analytical Chemistry
• Materials Science

Background:

• Chemical dosimeters are crucial for measuring radiation doses.
• Development of cost-effective and simple dosimeters is an ongoing need.
• Metal complex solutions offer potential for spectrophotometric dosimetry.

Purpose of the Study:

• To investigate the dosimetric characteristics of a novel colored metal complex solution.
• To evaluate the suitability of this solution for gamma irradiation dosimetry.
• To establish the response, stability, and repeatability of the proposed dosimeter.

Main Methods:

• Synthesis of a liquid solution chemical dosimeter using nickel nitrate hexahydrate and 1,5-diphenylcarbazone.
• Spectrophotometric analysis at a maximum wavelength of 530 nm to determine absorbance.
• Evaluation of dosimeter response, radiation chemical yield (G(x)), stability, and repeatability across a 20-1000 Gy gamma irradiation range.

Main Results:

• The colored metal complex solution exhibited a maximum absorbance at 530 nm.
• The dosimeter demonstrated a reliable response within the 20-1000 Gy gamma irradiation range.
• Stability and repeatability assessments confirmed the dosimeter's consistent performance.

Conclusions:

• The developed nickel nitrate hexahydrate and 1,5-diphenylcarbazone solution is a viable chemical dosimeter.
• The solution is suitable for routine dosimetry applications within the specified gamma dose range.
• This inexpensive and simple synthesis offers a practical option for radiation measurement.