Development of resonance ionization mass spectrometry for calcium radioisotope in nuclear waste materials

Miyabe, Masabumi ; Oba, Masaki ; Kato, Masaaki; Wakaida, Ikuo ; Watanabe, Kazuo

We have been developing a continuous-wave resonance ionization mass spectrometry (cw-RIMS) apparatus aiming at an analysis of $^{41}$ Ca radioisotope in nuclear waste materials. The optimum three-step ionization schemes of Ca were investigated and the 4snf (1F3) series members of around n=35 were found to have high isotope-selectivity and efficiency under our experimental conditions. The background noise arising from the thermal ions were negligible at a furnace current of 1500K. On the basis of these results the abundance sensitivity of 810 $^{-8}$ was demonstrated for $^{46}$ Ca. Also we extended data on isotope shift and hyperfine structure of 4snf (1F3) series up to n=80.

Language	:	English
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Meeting title	:	International Conference on Laser Probing 2006 (LAP 2006)
Held date	:	2006/09
Location (city)	:	Vienna
Location (country)	:	Austria
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Registration No. : BB20061593
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