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[X-ray dosimetry using SAMOS type read-only memory].

A Yoshimura1

  • 1Radioisotope Center, Kyushu University, Fukuoka-shi, Japan.

Radioisotopes
|June 1, 1988
PubMed
Summary
This summary is machine-generated.

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This study presents a novel X-ray dosimeter using a stacked gate avalanche injection type MOS (SAMOS) structure. The device accurately measures X-ray dose by quantifying charge reduction, offering linearity and no fading.

Area of Science:

  • Solid-state physics
  • Semiconductor device physics
  • Radiation detection

Context:

  • Investigating novel applications of memory integrated circuits (ICs) for radiation dosimetry.
  • Utilizing the unique properties of stacked gate avalanche injection type MOS (SAMOS) structures.

Purpose:

  • To develop and characterize an X-ray dosimeter based on a SAMOS structure.
  • To evaluate the linearity, energy response, and fading characteristics of the proposed dosimeter.

Summary:

  • An X-ray dosimeter was developed using a SAMOS memory IC, distinguished by a control gate for analog charge measurement.
  • X-ray irradiation reduces electron injection into the floating gate via avalanche effect, allowing for dose determination.
  • The dosimeter demonstrates good linearity, a flat energy response, and no fading effects.

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Impact:

  • Provides a new solid-state dosimetry solution with potential for accurate X-ray dose measurement.
  • Highlights the versatility of SAMOS technology beyond data storage applications.
  • Offers a dosimeter with stable performance characteristics for radiation monitoring.