ASTM E1297-08(2013)
用铌的放射性活化测量快中子反应速度的标准试验方法

Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Niobium

被代替

标准号

ASTM E1297-08(2013)

发布

2008年

发布单位

美国材料与试验协会

替代标准

ASTM E1297-18

当前最新

ASTM E1297-18

 

 

引用标准

ASTM D1193 ASTM E1005 ASTM E1006 ASTM E1018 ASTM E170 ASTM E181 ASTM E185 ASTM E261 ASTM E262 ASTM E844 ASTM E944

适用范围

5.1 Refer to Practice E261 for a general discussion of the determination of decay rates, reaction rates, and neutron fluence rates with threshold detectors (1-29).³ Refer to Practice E1006, Practice E185 and Guide E1018 for the use and application of results obtained by this test method.(34-36)

5.2 The half-life of ^93mNb is 5730 ?? 220 days (30) and has a K X-ray emission probability of 0.1099 ?? 0.0025 per decay (30). The K_?? and K_?? X-rays of niobium are at 16.5213???16.152 and 18.618???18.953 keV, respectively. The recommended ⁹³Nb (n,n???)^93mNb cross section comes from the IRDF-90 cross section compendium (31), was drawn from the RRDF-98 c......

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