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When had the supernova explosion which contributes to the solar system formation happened ?; Nuclear cosmochronometer $$^{92}$$Nb

Hayakawa, Takehito; Kajino, Toshitaka*; Chiba, Satoshi*

The isotope $$^{92}$$Nb decays to $$^{92}$$Zr with a half-life of 34.7 Myr. The initial abundance ratios for $$^{92}$$Nb/$$^{93}$$Nb at the time of solar system formation (SSF) have been measured in primitive meteorites. The astrophysical origin of this material, however, has remained unknown. We have proposed a novel origin of $$^{92}$$Nb via neutrino-induced reactions in core-collapse supernovae.

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Japanese

Journal

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Nihon Butsuri Gakkai-Shi

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70

Number

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11

Pages

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p.824 - 829

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2015/11

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Paper URL

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https://doi.org/10.11316/butsuri.70.11_824

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no keyword

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