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  • ASTM E 798 : 2016 : REDLINE

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    Standard Practice for Conducting Irradiations at Accelerator-Based Neutron Sources

    Available format(s):  PDF

    Language(s):  English

    Published date:  01-08-2022

    Publisher:  American Society for Testing and Materials

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    CONTAINED IN VOL. 12.02, 2016 Defines procedures for irradiations at accelerator-based neutron sources.

    Scope - (Show below) - (Hide below)

    1.1This practice covers procedures for irradiations at accelerator-based neutron sources. The discussion focuses on two types of sources, namely nearly monoenergetic 14-MeV neutrons from the deuterium-tritium T(d,n) interaction, and broad spectrum neutrons from stopping deuterium beams in thick beryllium or lithium targets. However, most of the recommendations also apply to other types of accelerator-based sources, including spallation neutron sources (1).2 Interest in spallation sources has increased recently due to their development of high-power, high-flux sources for neutron scattering and their proposed use for transmutation of fission reactor waste (2).

    1.2Many of the experiments conducted using such neutron sources are intended to provide a simulation of irradiation in another neutron spectrum, for example, that from a DT fusion reaction. The word simulation is used here in a broad sense to imply an approximation of the relevant neutron irradiation environment. The degree of conformity can range from poor to nearly exact. In general, the intent of these experiments is to establish the fundamental relationships between irradiation or material parameters and the material response. The extrapolation of data from such experiments requires that the differences in neutron spectra be considered.

    1.3The procedures to be considered include methods for characterizing the accelerator beam and target, the irradiated sample, and the neutron flux (fluence rate) and spectrum, as well as procedures for recording and reporting irradiation data.

    1.4Other experimental problems, such as temperature control, are not included.

    1.5The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.6This 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.

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    Committee E 10
    Document Type Redline
    Publisher American Society for Testing and Materials
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM E 1854 : 2013 : REDLINE Standard Practice for Ensuring Test Consistency in Neutron-Induced Displacement Damage of Electronic Parts

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM E 181 : 2017 : REDLINE Standard Test Methods for Detector Calibration and Analysis of Radionuclides
    ASTM E 265 : 2015 : REDLINE Standard Test Method for Measuring Reaction Rates and Fast-Neutron Fluences by Radioactivation of Sulfur-32
    ASTM E 170 : 2017 : REDLINE Standard Terminology Relating to Radiation Measurements and Dosimetry
    ASTM E 266 : 2017 : REDLINE Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Aluminum
    ASTM E 261 : 2016 : REDLINE Standard Practice for Determining Neutron Fluence, Fluence Rate, and Spectra by Radioactivation Techniques
    ASTM E 393 : 2013 : REDLINE Standard Test Method for Measuring Reaction Rates by Analysis of Barium-140 From Fission Dosimeters
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