CONTRIBUTION OF NEUTRON-CAPTURE REACTIONS TO OBSERVED TUNGSTEN ISOTOPIC RATIOS
| dc.contributor.author | Masarik J. | |
| dc.date.accessioned | 2020-12-15T04:58:26Z | |
| dc.date.available | 2020-12-15T04:58:26Z | |
| dc.date.issued | 1997 | |
| dc.description.abstract | To study whether tungsten isotopic ratios observed in terrestrial samples relative to W ratios in an iron meteorite could be made by neutron-capture reactions in the iron meteorite, the fluxes of thermal and epithermal neutrons in a large iron meteoroid, Toluca, were calculated using Monte Carlo particle production and transport codes. Peak neutron-capture rates on W isotopes were calculated to occur at depths of 30-34 cm. The calculated changes in the 182W/183W due to neutrons are much less than those observed in terrestrial samples relative to iron meteorites, indicating a non-cosmogenic origin of the observed W isotopic ratios. | |
| dc.identifier | https://elibrary.ru/item.asp?id=268935 | |
| dc.identifier.citation | Earth and Planetary Science Letters, 1997, , 1, 181-185 | |
| dc.identifier.issn | 0012-821X | |
| dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/20813 | |
| dc.subject | TUNGSTEN | |
| dc.subject | IRON METEORITES | |
| dc.subject | ISOTOPE RATIOS | |
| dc.subject | NEUTRONS | |
| dc.title | CONTRIBUTION OF NEUTRON-CAPTURE REACTIONS TO OBSERVED TUNGSTEN ISOTOPIC RATIOS | |
| dc.type | Статья |