Buompane R, Roca V, Sabbarese C, De Cicco F, Mattone C, Pugliese M, Quarto M
Dipartimento di Matematica e Fisica, Seconda Università degli Studi di Napoli, Caserta, Italy.
Appl Radiat Isot. 2013 Nov;81:221-5. doi: 10.1016/j.apradiso.2013.03.042. Epub 2013 Mar 22.
The recent interest for measuring (220)Rn activity in air and the following development of the corresponding measurement techniques require the improvement of standards for the calibration and characterization of the measurement devices. Due to the short half-life of the (220)Rn, the adopted techniques for the production of (222)Rn sources are not always reliable. In this paper a methodology for realizing a thoron known activity starting from a (232)Th source will be presented and discussed.
近期对测量空气中（220）Rn活度的兴趣以及相应测量技术的后续发展，要求改进测量设备校准和特性表征的标准。由于（220）Rn的半衰期较短，用于生产（222）Rn源的现有技术并非总是可靠的。本文将介绍并讨论一种从（232）Th源实现钍射气已知活度的方法。
