Abstract
Out-of-pile extractions after short irradiations were conducted on LiAlO 2 and LiAl 5 O 8 samples of different grain sizes. Extraction was conducted by flushing the samples either with pure argon or argon plus 0.1% hydrogen, in the temperature range 450°C to 850°C. Tritium is extracted more readily from small grain samples than from large grain ones. Hydrogen addition induces the fast extraction of a large part of the tritium as gas. But with LiAlO 2 , a smaller fraction remains under water form in spite of this addition, proving the existence of several tritiated species and the formation of water within the sample itself. In the in-pile LISA experiment, hydrogen addition decreased inventories. Experimental curves of activity changes can be fitted by calculations involving a surface effect as the rate determining step of extraction. Results are compared with those of the LILA and TRIO experiments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
