ASTM E496-1996
用放射性技术测定H3(d,n)He4中子发生器所产生的中子通量率和平均能量的试验方法

Standard Test Method for Measuring Neutron Fluence Rate and Average Energy From Neutron Generators by Radioactivation Techniques

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标准号

ASTM E496-1996

发布日期

1996年

实施日期

废止日期

无

中国标准分类号

F04

国际标准分类号

17.240 (Radiation measurements); 27.120.30 (Fissil

发布单位

US-ASTM

适用范围

1.1 This test method covers a general procedure for the measurement of the fast-neutron fluence rate produced by neutron generators utilizing the H(d,n) He reaction. Neutrons so produced are usually referred to as 14-MeV neutrons, but range in energy depending on a number of factors.

1.2 This test method uses the following threshold activation reactions: in aluminum, 27 Al(n,[alpha]) Na and 27 Al(n,p) Mg; in nickel, Ni(n,p) Co and Ni(n,2n) Ni; and in copper, Cu(n,2n) Cu and Cu(n,2n) Cu. The neutron fluence rate is determined from induced foil activities (as measured by gamma spectrometry) and reaction cross-section data.

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.