What Is This Tool?
This unit converter helps translate radiation absorbed doses from millirad, a small legacy unit, into joule per centigram, an energy-per-mass measurement suited for advanced dosimetry, radiation processing, and research applications.
How to Use This Tool?
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Enter the radiation dose value in millirad (mrd) in the input field.
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Select millirad as the original unit and joule per centigram as the target unit.
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Initiate the conversion to see the equivalent dose in joule per centigram (J/cg).
Key Features
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Converts absorbed radiation dose from millirad (mrd) to joule per centigram (J/cg).
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Expresses legacy CGS units into precise SI-based energy-per-mass units.
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Useful for medical, environmental, and scientific radiation dose analysis.
Examples
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5 millirad [mrd] converts to 5 × 1e-10 = 5e-10 joule/centigram [J/cg].
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100 millirad [mrd] converts to 100 × 1e-10 = 1e-8 joule/centigram [J/cg].
Common Use Cases
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Comparing small diagnostic X-ray doses using millirad values.
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Monitoring environmental and occupational radiation doses at low levels.
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Calibrating radiation survey meters with legacy rad-based units.
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Reporting high-energy radiation deposited per small mass in material irradiation and physics research.
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Translating legacy absorbed dose measurements into modern SI energy-per-mass units.
Tips & Best Practices
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Double-check unit selections before converting to ensure accuracy.
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Use this converter to bridge legacy and modern dose measurement standards.
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Apply conversions primarily when dealing with small historical doses or very large energy depositions.
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Be aware that millirad units are less common in contemporary dosimetry.
Limitations
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Millirad is a legacy unit and not commonly used in current dosimetry practices.
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Joule per centigram represents very large doses and is unusual for low-level dose measurements.
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This conversion mainly applies when relating small legacy radiation doses to large-scale energy-per-mass quantities.
Frequently Asked Questions
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What does 1 millirad represent in terms of gray?
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1 millirad equals 0.001 rad, which is equivalent to 1×10⁻⁵ gray (Gy), quantifying absorbed radiation dose.
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When is joule per centigram used for absorbed dose?
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Joule per centigram quantifies very large energy depositions per small sample mass, commonly used in radiation processing and high-energy physics experiments.
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Why convert from millirad to joule per centigram?
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Converting allows expressing small legacy absorbed dose values in a precise SI-based energy-per-mass unit useful for modern scientific and dosimetry applications.
Key Terminology
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Millirad [mrd]
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A thousandth of a rad; a legacy CGS unit measuring absorbed radiation dose, equal to 1×10⁻⁵ gray.
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Joule per centigram [J/cg]
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An energy-per-mass unit quantifying absorbed radiation dose as joules per 0.01 grams, equivalent to 1×10⁵ gray.
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Absorbed Dose
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The amount of energy deposited by ionizing radiation per unit mass of material.