상세 보기
SUPERNOVA NEUTRINO NUCLEOSYNTHESIS OF THE RADIOACTIVE Nb-92 OBSERVED IN PRIMITIVE METEORITES
- Hayakawa, T.;
- Nakamura, K.;
- Kajino, T.;
- Chiba, S.;
- Iwamoto, N.;
- ... Cheoun, M. K.;
- 외 1명
Citations
WEB OF SCIENCE
36Citations
SCOPUS
42초록
The isotope Nb-92 decays to Zr-92 with a half-life of 3.47 x 10(7) yr. Although this isotope does not exist in the current solar system, initial abundance ratios for Nb-92/Nb-93 at the time of solar system formation have been measured in primitive meteorites. The astrophysical origin of this material, however, has remained unknown. In this Letter, we present new calculations which demonstrate a novel origin for Nb-92 via neutrino-induced reactions in core-collapse supernovae (nu-process). Our calculated result shows that the observed ratio of Nb-92/Nb-93 similar to 10(-5) can be explained by the nu-process.
키워드
meteorites, meteors, meteoroids; neutrinos; supernovae: general; EARLY SOLAR-SYSTEM; EXTINCT NB-92; RADIONUCLIDES; NB-92-ZR-92; DISK; SUN
- 제목
- SUPERNOVA NEUTRINO NUCLEOSYNTHESIS OF THE RADIOACTIVE Nb-92 OBSERVED IN PRIMITIVE METEORITES
- 저자
- Hayakawa, T.; Nakamura, K.; Kajino, T.; Chiba, S.; Iwamoto, N.; Cheoun, M. K.; Mathews, G. J.
- 발행일
- 2013-12-10
- 유형
- Article
- 권
- 779
- 호
- 1
- 출판사
- IOP PUBLISHING LTD
- 발행국가
- 영국
- ISSN
- E 2041-8213
P 2041-8205