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ASTM E496-02

Historical Revision

Standard Test Method for Measuring Neutron Fluence and Average Energy from <sup >3</sup>H(d,n)<sup>4</sup>He Neutron Generators by Radioactivation Techniques

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1.1 This test method covers a general procedure for the measurement of the fast-neutron fluence rate produced by neutron generators utilizing the 3H(d,n)4He reaction. Neutrons so produced are usually referred to as 14-MeV neutrons, but range in energy depending on a number of factors. This test method does not adequately cover fusion sources where the velocity of the plasma may be an important consideration.

1.2 This test method uses threshold activation reactions to determine the average energy of the neutrons and the neutron fluence at that energy. At least three activities, chosen from an appropriate set of dosimetry reactions, are required to characterize the average energy and fluence. The required activities are typically measured by gamma ray spectroscopy.

1.3 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.


SDO ASTM: ASTM International
Document Number E496
Publication Date June 10, 2002
Language en - English
Page Count 12
Revision Level 02
Supercedes
Committee E10.07
Publish Date Document Id Type View
Jan. 1, 2014 E0496-14E01 Revision
Jan. 1, 2014 E0496-14 Revision
June 15, 2009 E0496-09 Revision
June 10, 2002 E0496-02 Revision
Dec. 10, 1996 E0496-96 Revision
July 1, 2022 E0496-14R22 Reaffirmation