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Microdosemeter instrument (MIDN) for assessing risk in space.

V L Pisacane¹, Q E Dolecek, H Malak

¹Aerospace Engineering Department (Mail Stop 11B), United States Naval Academy, 590 Holloway Road, Annapolis, MD 21402-5042, USA. pisacane@usna.edu

Radiation Protection Dosimetry

|January 5, 2011

Summary

This summary is machine-generated.

Astronauts lack real-time radiation monitoring. This study developed a prototype microdosimeter-dosimeter nucleon instrument for space, providing absorbed dose and radiation quality data to mitigate risks during space missions.

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Area of Science:

Space science
Radiation physics
Instrumentation

Background:

Space radiation poses higher dose rates than on Earth, increasing with altitude.
Current technology lacks real-time monitoring for astronauts regarding radiation dose, quality, and risk.
Galactic and solar events significantly contribute to space radiation exposure.

Purpose of the Study:

To develop a prototypic instrument for real-time monitoring of radiation in space.
To provide astronauts with absorbed dose, dose rate, and dose equivalent data.
To enable timely actions to reduce radiation exposure for space personnel.

Main Methods:

Development of a microdosimeter-dosimeter nucleon instrument.
Testing of the instrument in simulated space radiation environments.
Comparison of ground-based study results with transport code predictions.

Main Results:

The instrument provides real-time absorbed dose, dose rate, and dose equivalent.
Ground-based studies show promising performance compared to transport code predictions.
A prototype was successfully launched into space in 2007, marking a first for solid-state microdosimeters.

Conclusions:

The developed instrument offers real-time radiation monitoring capabilities for space applications.
This technology has potential applications in health physics, anti-terrorism, and electronics radiation hardening.
The successful spaceflight of a prototype validates its potential for future space missions.