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氚增殖包层中产氚率的测量是聚变核能系统中需要研究的重要问题之一,本文开展了用于产氚率测量的Al箔封装碳酸锂探测片液闪样品制备化学处理方法的研究。结果表明,首先采用氢氧化钠溶液来溶解Al箔,然后再用盐酸溶解碳酸锂探测片的溶解方式,能制成透明度高且无分层的液闪样品。为了提高测氚计数效率和保证样品兼容性,对20 m L的标准液闪样品,闪烁液体积应至少取12 m L,同时还应将液闪样品保持在10-20°C范围进行储存和测量。
The measurement of tritium production rate in tritium proliferation coating is one of the most important issues to be studied in fusion nuclear energy system. A method for chemical treatment of liquefied flashover sample in Al foil-encapsulated lithium carbonate detection chip is proposed in this paper. The results show that the high transparency and non-delamination of the liquid flash samples can be obtained by first dissolving the Al foil with sodium hydroxide solution and then dissolving the lithium carbonate probe solution with hydrochloric acid. In order to improve tritium counting efficiency and ensure sample compatibility, the volume of scintillation fluid should be at least 12 mL for a 20 mL standard flash sample, and the flash flash sample should be stored at 10-20 ° C measuring.