Mass-dependent isotopic fractionation of a solid tin under a strong gravitational field

Osawa, Takahito ; Ono, Masao ; Esaka, Fumitaka ; Okayasu, Satoru ; Iguchi, Yusuke*; Hao, T.; Magara, Masaaki ; Mashimo, Tsutomu

Pure tin metals were centrifuged at 1 and at 220 $^{circ}$ C for 100 hours, 0.40 at 220-230 $^{circ}$ C for 24 hours, and 0.25 at 220 $^{circ}$ C for 24 hours. Their isotopic compositions were measured by a secondary ion mass spectrometer (SIMS). $^{116}$ Sn/ $^{120}$ Sn and $^{124}$ Sn/ $^{120}$ Sn ratios of the 1.02 sample were considerably different than the initial compositions, and the magnitude of isotopic fractionation reached 2.6%. A three-isotope diagram of $^{116}$ Sn/ $^{120}$ Sn versus $^{124}$ Sn/ $^{120}$ Sn shows conclusively that isotopic fractionation caused by a gravitational field depended only on isotopic mass.

Language	:	English
Journal	:	EPL; A Letters Journal Exploring the Frontiers of Physics
Volume	:	85
Number	:	6
Pages	:	p.64001_1 - 64001_5
Publication Year/Month	:	2009/03
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Paper URL	:	https://doi.org/10.1209/0295-5075/85/64001
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Registration No. : AA20090053
JAEA Abstracts No. : 46000931
Paper Submission No. : 20499

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