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ASTM E798

Standard Practice for Conducting Irradiations at Accelerator-Based Neutron Sources

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Organization: ASTM
Publication Date: 1 October 2016
Status: active
Page Count: 13
ICS Code (Reactor engineering): 27.120.10
scope:

This 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 acceleratorbased 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).

Many 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.

The 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.

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

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

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.

2 The boldface numbers in parentheses refer to a list of references at the end of this practice.

Document History

ASTM E798
October 1, 2016
Standard Practice for Conducting Irradiations at Accelerator-Based Neutron Sources
This 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...
January 10, 1996
Standard Practice for Conducting Irradiations at Accelerator-Based Neutron Sources
This 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...
January 10, 1996
Standard Practice for Conducting Irradiations at Accelerator-Based Neutron Sources
This 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...
January 10, 1996
Standard Practice for Conducting Irradiations at Accelerator-Based Neutron Sources
1. Scope 1.1 This 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...
October 27, 1989
STANDARD PRACTICE FOR CONDUCTING IRRADIATIONS AT ACCELERATOR-BASED NEUTRON SOURCES
A description is not available for this item.
March 27, 1981
STANDARD PRACTICE FOR CONDUCTING IRRADIATIONS AT ACCELERATOR-BASED NEUTRON SOURCES
A description is not available for this item.

References

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