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The 89Y(n,γ) reaction: Radiative cross sections and the decay of 90Ym.
Applied Radiation and Isotopes ( IF 1.6 ) Pub Date : 2020-05-13 , DOI: 10.1016/j.apradiso.2020.109191
K S Krane 1
Affiliation  

The activity 90Ym was produced by radiative neutron capture on targets of mono-isotopic 89Y at several different reactor sites. By observing the γ rays emitted in the decay of 90Ym, the thermal neutron cross section was deduced to be 1.02(1) mb, and the resonance integral was deduced to be 7.82(19) mb or 7.35(15) mb at 2 different reactor sites. The energies of the 3 γ rays emitted in the 90Ym decay were measured to be 202.539(10), 479.532(10), and 682.03(4) keV by comparison with the energies of lines in well-known calibration sources. The half-life of the 90Ym decay was determined to be 3.178(12) h. The cross sections are discussed in the context of a statistical model of radiative capture.



中文翻译:

89Y(n,γ)反应:辐射截面和90Ym的衰减。

90 Y m的活性是通过在几个不同的反应堆位置对单个同位素89 Y的靶进行辐射中子捕获而产生的。通过观察在90 Y m的衰减中发射的γ射线,推导出热中子截面为1.02(1)mb,推论共振积分为2时为7.82(19)mb或7.35(15)mb。不同的反应堆地点。与众所周知的校准源中的线能量相比,在90 Y m衰减中发射的3条γ射线的能量经测量为202.539(10),479.532(10)和682.03(4)keV。90 Y m的半衰期衰减确定为3.178(12)h。在辐射捕获的统计模型的背景下讨论横截面。

更新日期:2020-05-13
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