Activity monitoring of a gaseous tritium source by beta induced X-ray spectrometry
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- 作者：M. R?llig ; F. Priester ; M. Babutzka ; J. Bonn ; B. Bornschein ; G. Drexlin ; S. Ebenh?ch ; Ernst W. Otten ; M. Steidl ; M. Sturm
- 关键词：Tritium ; Monitoring ; Bremsstrahlung X-ray ; Beta induced X-ray spectrometry ; BIXS ; SDD
- 刊名：Fusion Engineering and Design
- 出版年：2013
- 出版时间：October, 2013
- 年：2013
- 卷：88
- 期：6-8
- 页码：1263-1266
- 全文大小：460 K
文摘
For monitoring and control of gaseous tritium sources in fuel circulation systems of fusion reactors beta induced X-ray spectrometry (BIXS) seems to be an applicable method. The characteristics of a BIXS monitoring setup built at TLK were examined. A low-noise silicon drift detector (SDD) was used together with two thin beryllium windows evaporated with gold films of 100 nm for efficient X-ray production. The measured X-ray intensity was proportional to the tritium partial pressure and the average detection efficiency was evaluated as 32.6 ¡Á 10?8 cps/Bq. A tritium memory effect was revealed. From the results it was concluded that such a monitoring system would be a useful complement for tritium analytics devices if well designed in terms of memory effect suppression.