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ASTM-E1250:2005 Edition

ASTM-E1250:2005 Edition

$44.96

E1250-88(2005) Standard Test Method for Application of Ionization Chambers to Assess the Low Energy Gamma Component of Cobalt-60 Irradiators Used in Radiation-Hardness Testing of Silicon Electronic Devices

Published By Publication Date Number of Pages
ASTM 2005 10
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1.1 Low energy components in the photon energy spectrum of Co-60 irradiators lead to absorbed dose enhancement effects in the radiation-hardness testing of silicon electronic devices. These low energy components may lead to errors in determining the absorbed dose in a specific device under test. This method covers procedures for the use of a specialized ionization chamber to determine a figure of merit for the relative importance of such effects. It also gives the design and instructions for assembling this chamber.

1.2 This method is applicable to measurements in Co-60 radiation fields where the range of exposure rates is 7 10 6 to 3 10 2 C kg 1 s 1 (approximately 100 R/h to 100 R/s). For guidance in applying this method to radiation fields where the exposure rate is >100 R/s, see . Note 1See Terminology E 170 for definition of exposure and its units.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Significance and Use
Apparatus
Procedure
Interpretation of Measurement Results
FIG. 1
3 Application to Hardness Testing
Precision and Bias
FIG. 2
4 Keywords
X1. APPLICATION OF THIS METHOD TO HIGH EXPOSURE RATES
X1.1
X1.2
X1.3
X1.4
X2. COMPLETE FABRICATION DRAWINGS FOR THE GOLD- AND ALUMINUM-WALLED IONIZATION CHAMBER
X2.1
X2.2
X2.3
5 FIG. X2.1
FIG. X2.2
6 FIG. X2.3
FIG. X2.4
FIG. X2.5
FIG. X2.6
7 X3. IONIZATION CURRENT RATIOS OBTAINED FOR VARIOUS Co-60 SOURCE CONFIGURATIONS
X3.1
X3.2
FIG. X2.7
FIG. X2.8
8 TABLE X3.1
FIG. X3.1
FIG. X3.2
FIG. X3.3
9 FIG. X3.4
FIG. X3.5
10 X4. RELATIONSHIP BETWEEN ESTIMATED ABSORBED DOSE ENHANCEMENT FACTORS AND IONIZATION CHAMBER CURRENT RATIOS
X4.1
X4.2
X4.3
X4.4
X4.5

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