ASTM E668-20
(Practice)Standard Practice for Application of Thermoluminescence-Dosimetry (TLD) Systems for Determining Absorbed Dose in Radiation-Hardness Testing of Electronic Devices
Standard Practice for Application of Thermoluminescence-Dosimetry (TLD) Systems for Determining Absorbed Dose in Radiation-Hardness Testing of Electronic Devices
SIGNIFICANCE AND USE
4.1 Absorbed dose in a material is an important parameter that can be correlated with radiation effects produced in electronic components and devices that are exposed to ionizing radiation. Reasonable estimates of this parameter can be calculated if knowledge of the source radiation field (that is, energy spectrum and particle fluence) is available. Sufficiently detailed information about the radiation field is generally not available. However, measurements of absorbed dose with passive dosimeters in a radiation test facility can provide information from which the absorbed dose in a material of interest can be inferred. Under certain prescribed conditions, TLDs are quite suitable for performing such measurements.
Note 2: For comprehensive discussions of various dosimetry methods applicable to the radiation types and energy and absorbed dose-rate range discussed in this practice, see ICRU Reports 14, 17, 21, and 34.
SCOPE
1.1 This practice covers procedures for the use of thermoluminescence dosimeters (TLDs) to determine the absorbed dose in a material irradiated by ionizing radiation. Although some elements of the procedures have broader application, the specific area of concern is radiation-hardness testing of electronic devices. This practice is applicable to the measurement of absorbed dose in materials irradiated by gamma rays, X rays, and electrons of energies from 12 to 60 MeV. Specific energy limits are covered in appropriate sections describing specific applications of the procedures. The range of absorbed dose covered is approximately from 10−2 to 104 Gy (1 to 106 rad), and the range of absorbed dose rates is approximately from 10−2 to 1010 Gy/s (1 to 1012 rad/s). Absorbed dose and absorbed dose-rate measurements in materials subjected to neutron irradiation are not covered in this practice. (See Practice E2450 for guidance in mixed fields.) Further, the portion of these procedures that deal with electron irradiation are primarily intended for use in parts testing. Testing of devices as a part of more massive components such as electronics boards or boxes may require techniques outside the scope of this practice.
Note 1: The purpose of the upper and lower limits on the energy for electron irradiation is to approach a limiting case where dosimetry is simplified. Specifically, the dosimetry methodology specified requires that the following three limiting conditions be approached: (a) energy loss of the primary electrons is small, (b) secondary electrons are largely stopped within the dosimeter, and (c) bremsstrahlung radiation generated by the primary electrons is largely lost.
1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E668 − 20
Standard Practice for
Application of Thermoluminescence-Dosimetry (TLD)
Systems for Determining Absorbed Dose in Radiation-
1
Hardness Testing of Electronic Devices
This standard is issued under the fixed designation E668; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 Thispracticecoversproceduresfortheuseofthermolu-
1.3 This international standard was developed in accor-
minescencedosimeters(TLDs)todeterminetheabsorbeddose
dance with internationally recognized principles on standard-
in a material irradiated by ionizing radiation. Although some
ization established in the Decision on Principles for the
elements of the procedures have broader application, the
Development of International Standards, Guides and Recom-
specific area of concern is radiation-hardness testing of elec-
mendations issued by the World Trade Organization Technical
tronic devices. This practice is applicable to the measurement
Barriers to Trade (TBT) Committee.
of absorbed dose in materials irradiated by gamma rays, X
rays, and electrons of energies from 12 to 60 MeV. Specific
2. Referenced Documents
energy limits are covered in appropriate sections describing
2
2.1 ASTM Standards:
specific applications of the procedures. The range of absorbed
−2 4 6 E170Terminology Relating to Radiation Measurements and
dose covered is approximately from 10 to 10 Gy (1 to 10
Dosimetry
rad), and the range of absorbed dose rates is approximately
−2 10 12 E380Practice for Use of the International System of Units
from 10 to 10 Gy/s (1 to 10 rad/s). Absorbed dose and
3
(SI) (the Modernized Metric System) (Withdrawn 1997)
absorbed dose-rate measurements in materials subjected to
E666Practice for CalculatingAbsorbed Dose From Gamma
neutron irradiation are not covered in this practice. (See
or X Radiation
Practice E2450 for guidance in mixed fields.) Further, the
E2450Practice for Application of CaF (Mn) Thermolumi-
2
portion of these procedures that deal with electron irradiation
nescence Dosimeters in Mixed Neutron-Photon Environ-
are primarily intended for use in parts testing. Testing of
ments
devices as a part of more massive components such as
2.2 International Commission on Radiation Units and Mea-
electronics boards or boxes may require techniques outside the
4
surements (ICRU) Reports:
scope of this practice.
ICRU Report 10eRadiobiological Dosimetry
NOTE 1—The purpose of the upper and lower limits on the energy for
ICRU Report 14Radiation Dosimetry: X Rays and Gamma
electron irradiation is to approach a limiting case where dosimetry is
RayswithMaximumPhotonEnergiesBetween0.6and50
simplified.Specifically,thedosimetrymethodologyspecifiedrequiresthat
MeV
the following three limiting conditions be approached: (a) energy loss of
ICRU Report 17Radiation Dosimetry: X Rays Generated at
the primary electrons is small, (b) secondary electrons are largely stopped
within the dosimeter, and (c) bremsstrahlung radiation generated by the
Potentials of 5 to 150 keV
primary electrons is largely lost.
ICRU Report 21Radiation Dosimetry: Electrons with Initial
1.2 This standard does not purport to address all of the
Energies Between 1 and 50 MeV
safety concerns, if any, associated with its use. It is the ICRU Report 33Radiation Quantities and Units
responsibility of the user of this standard to establish appro-
ICRU Report 34The Dosimetry of Pulsed Radiation
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This practice is under the jurisdiction of ASTM Committee E10 on Nuclear contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Technology and Applicationsand is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
E10.07 on Radiation Dosimetry for Radiation Effects on Materials and Devices on the ASTM website.
3
Materials and Devices. The last approved version of this historical standard is referenced on
Current edition approved July 1, 2020. Published August 2020. Originally www.astm.org.
4
approved in 1978. Last previous edition approved in 2013 as E668–13. DOI: Available from International Commission on Radiation Units and
10.1520/E0668-20. Measurements,
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E668 − 13 E668 − 20
Standard Practice for
Application of Thermoluminescence-Dosimetry (TLD)
Systems for Determining Absorbed Dose in Radiation-
1
Hardness Testing of Electronic Devices
This standard is issued under the fixed designation E668; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This practice covers procedures for the use of thermoluminescence dosimeters (TLDs) to determine the absorbed dose in
a material irradiated by ionizing radiation. Although some elements of the procedures have broader application, the specific area
of concern is radiation-hardness testing of electronic devices. This practice is applicable to the measurement of absorbed dose in
materials irradiated by gamma rays, X rays, and electrons of energies from 12 to 60 MeV. Specific energy limits are covered in
appropriate sections describing specific applications of the procedures. The range of absorbed dose covered is approximately from
−2 4 6 −2 10 12
10 to 10 Gy (1 to 10 rad), and the range of absorbed dose rates is approximately from 10 to 10 Gy/s (1 to 10 rad/s).
Absorbed dose and absorbed dose-rate measurements in materials subjected to neutron irradiation are not covered in this practice.
(See Practice E2450 for guidance in mixed fields.) Further, the portion of these procedures that deal with electron irradiation are
primarily intended for use in parts testing. Testing of devices as a part of more massive components such as electronics boards or
boxes may require techniques outside the scope of this practice.
NOTE 1—The purpose of the upper and lower limits on the energy for electron irradiation is to approach a limiting case where dosimetry is simplified.
Specifically, the dosimetry methodology specified requires that the following three limiting conditions be approached: (a) energy loss of the primary
electrons is small, (b) secondary electrons are largely stopped within the dosimeter, and (c) bremsstrahlung radiation generated by the primary electrons
is largely lost.
1.2 This standard dosedoes 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 safety, health, and healthenvironmental practices and
determine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
E170 Terminology Relating to Radiation Measurements and Dosimetry
3
E380 Practice for Use of the International System of Units (SI) (the Modernized Metric System) (Withdrawn 1997)
E666 Practice for Calculating Absorbed Dose From Gamma or X Radiation
E2450 Practice for Application of CaF (Mn) Thermoluminescence Dosimeters in Mixed Neutron-Photon Environments
2
4
2.2 International Commission on Radiation Units and Measurements (ICRU) Reports:
ICRU Report 10e Radiobiological Dosimetry
ICRU Report 14 14—RadiationRadiation Dosimetry: X Rays and Gamma Rays with Maximum Photon Energies Between 0.6
and 50 MeV
1
This practice is under the jurisdiction of ASTM Committee E10 on Nuclear Technology and Applicationsand is the direct responsibility of Subcommittee E10.07 on
Radiation Dosimetry for Radiation Effects on Materials and Devices on Materials and Devices.
Current edition approved Jan. 1, 2013July 1, 2020. Published January 2013August 2020. Originally approved in 1978. Last previous edition approved in 20102013 as
E668 – 10.E668 – 13. DOI: 10.1520/E0668-13.10.1520/E0668-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from International Commission on Radiation Units and Measurements, 7910, Woodmont Ave., Sui
...
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