An infrared stimulable phosphor dosimeter with time lapse indication.

Area of Science:

• Medical Physics
• Radiation Detection and Measurement

Background:

• Accurate radiation dosimetry is crucial for monitoring occupational exposure.
• Existing methods may not always provide both dose magnitude and elapsed time since exposure.

Purpose of the Study:

• To develop a novel radiation dosimetry technique.
• To enable simultaneous measurement of radiation dose and time elapsed since exposure.

Main Methods:

• Utilized an infrared (IR) stimulable zinc sulfide (ZnS) phosphor.
• Exposed the phosphor to two successive IR bands to stimulate luminescence.
• Analyzed two distinct luminescence peaks to separate dose and time information.

Main Results:

• Successfully recorded gamma doses ranging from 10(-4) R to 10(4) R.
• Demonstrated the ability to retrieve both dose magnitude and time elapsed since exposure.
• Confirmed applicability to both particle and electromagnetic radiation.

Conclusions:

• The developed method offers a dual-readout capability for radiation dosimetry.
• This technique is valuable for investigating accidental high-dose exposures in personnel.
• Potential for adaptation to different readout methods and energy detection forms.