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Electron Spin Resonance Sensor for Portable and Adaptable Retrospective Dosimetry.

Pragya R Shrestha1, Kin P Cheung1, Robert Gougelet2

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Summary
This summary is machine-generated.

A new compact electron spin resonance (ESR) sensor offers practical, field-ready radiation dosimetry. This portable magnetic resonance technology advances applications in medical physics, radiation protection, and environmental monitoring.

Keywords:
alanineelectron spin resonanceemergency responselithium formateradiation dosimetry

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Area of Science:

  • Magnetic Resonance Spectroscopy
  • Sensor Technology
  • Radiation Detection

Background:

  • Electron spin resonance (ESR) spectroscopy offers high precision and specificity for sensor applications, especially in radiation dosimetry.
  • Traditional ESR systems face limitations in portability and responsiveness due to bulky components and lengthy data acquisition.
  • These challenges hinder the broader deployment of ESR technology in field-applicable scenarios.

Purpose of the Study:

  • To overcome the limitations of conventional ESR systems by developing a compact and robust ESR sensor.
  • To introduce a portable magnetic resonance sensor for practical, field-ready ESR-based dosimetry.
  • To demonstrate the advancement of portable magnetic resonance sensor technology.

Main Methods:

  • Development of a compact ESR sensor incorporating a versatile sample holder and a low-power magnet.
  • Utilized a broadband nonresonant interferometric detection technique for signal detection.
  • Tested the sensor with alanine and lithium formate dosimeters across a dose range of 2 Gy to 100 kGy.

Main Results:

  • Successfully developed a compact and robust ESR sensor, overcoming traditional limitations.
  • Demonstrated the sensor's effectiveness in radiation dosimetry applications.
  • Validated the broadband ESR detection technique using a nonresonant interferometric approach.

Conclusions:

  • The new compact ESR sensor represents a significant advancement for practical, field-ready dosimetry.
  • This technology has broad applicability in medical physics, radiation protection, emergency response, and environmental monitoring.
  • The nonresonant interferometric detection technique contributes to the progress of portable magnetic resonance sensor technology.