Supernova neutrino nucleosynthesis of a radioactivity $^{92}$ Nb

Hayakawa, Takehito; Kajino, Toshitaka*; Nakamura, Ko*; Chiba, Satoshi; Iwamoto, Nobuyuki ; Cheoun, M. K.*; Mathews, G. J.*

Relatively short-lived radioactivities are used as nuclear cosmochronometers for determining the free decay time from the last nucleosynthesis episode strongly affecting to the material of the solar system to the solar system formation. An unstable isotope of $^{92}$ Zr with a half-life of 34.7 Myr is extinct in the present solar system, which can be used as a new cosmochronometer. We discuss the contribution of the neutrino-process.

Language	:	English
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Meeting title	:	Astronomy with Radioactivities VII
Held date	:	2011/03
Location (city)	:	Phillip Island
Location (country)	:	Australia
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Keywords	:	no keyword
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Registration No. : BB20103406
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Supernova neutrino nucleosynthesis of a radioactivity Nb

Supernova neutrino nucleosynthesis of a radioactivity $^{92}$ Nb