FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1992502502> ?p ?o ?g. }

• W1992502502 endingPage "96" @default.
• W1992502502 startingPage "79" @default.
• W1992502502 abstract "We describe in detail methods and techniques we have developed to measure 41Ca40Ca ratios to a sensitivity of 6 × 10−16 us our FN tandem accelerator. The major steps involved were (1) adoption of 41CaH3− negative ions to reduce 41K (41K/40Ca ~ 5 10−13); (2) production of typically 5 μA of 40CaH3−ions from calcium hydride in a high-intensity source; (3) refinement of a technique to efficiently convert CaO samples, as small as 15 mg, into CaH2; (4) implementation of a high resolution velocity selector to remove interferring 40Ca and 42Ca ions and (5) use of a multi-anode gas ionization detector to provide excellent discrimination of 41Ca from the remaining background ions. The system performs admirably, enabling measurements with ± 5% reproducibility on extraterrestrial samples, such as meteorites and lunar rocks. In addition, we have also carried out the first measurements, without pre-enrichment, of 41Ca in terrestrial rocks and bones. From these measurements, we conclude that radiocalcium dating of bones will most likely not develop into a viable dating technique. The 41Ca concentrations in modern bones are not only disappointingly low and quite close to our sensitivity limit, but show a marked variability. On the other hand, the study of 41Ca in extraterrestrial samples offers much promise as a means of determining terrestrial ages and pre-atmospheric sizes of meteorites, and of investigating the average solar cosmic ray flux during the past 300 000 years." @default.
• W1992502502 created "2016-06-24" @default.
• W1992502502 creator A5014110342 @default.
• W1992502502 creator A5029654958 @default.
• W1992502502 creator A5048092060 @default.
• W1992502502 creator A5085192855 @default.
• W1992502502 date "1990-03-01" @default.
• W1992502502 modified "2023-10-06" @default.
• W1992502502 title "41Ca: Measurement by accelerator mass spectrometry and applications" @default.
• W1992502502 cites W193962596 @default.
• W1992502502 cites W1968637400 @default.
• W1992502502 cites W1971661481 @default.
• W1992502502 cites W1975383334 @default.
• W1992502502 cites W1980591576 @default.
• W1992502502 cites W1986180068 @default.
• W1992502502 cites W1989300206 @default.
• W1992502502 cites W1991299935 @default.
• W1992502502 cites W2003513471 @default.
• W1992502502 cites W2018462883 @default.
• W1992502502 cites W2027901177 @default.
• W1992502502 cites W2029921929 @default.
• W1992502502 cites W2040301402 @default.
• W1992502502 cites W2045026175 @default.
• W1992502502 cites W2046154127 @default.
• W1992502502 cites W2049793733 @default.
• W1992502502 cites W2050909026 @default.
• W1992502502 cites W2059284009 @default.
• W1992502502 cites W2063568848 @default.
• W1992502502 cites W2072774536 @default.
• W1992502502 cites W2075173498 @default.
• W1992502502 cites W2111360569 @default.
• W1992502502 cites W2404760991 @default.
• W1992502502 doi "https://doi.org/10.1016/0168-583x(90)90049-z" @default.
• W1992502502 hasPublicationYear "1990" @default.
• W1992502502 type Work @default.
• W1992502502 sameAs 1992502502 @default.
• W1992502502 citedByCount "75" @default.
• W1992502502 countsByYear W19925025022012 @default.
• W1992502502 countsByYear W19925025022013 @default.
• W1992502502 countsByYear W19925025022017 @default.
• W1992502502 countsByYear W19925025022018 @default.
• W1992502502 countsByYear W19925025022019 @default.
• W1992502502 countsByYear W19925025022023 @default.
• W1992502502 crossrefType "journal-article" @default.
• W1992502502 hasAuthorship W1992502502A5014110342 @default.
• W1992502502 hasAuthorship W1992502502A5029654958 @default.
• W1992502502 hasAuthorship W1992502502A5048092060 @default.
• W1992502502 hasAuthorship W1992502502A5085192855 @default.
• W1992502502 hasBestOaLocation W19925025021 @default.
• W1992502502 hasConcept C107872376 @default.
• W1992502502 hasConcept C111309251 @default.
• W1992502502 hasConcept C113196181 @default.
• W1992502502 hasConcept C121073033 @default.
• W1992502502 hasConcept C121332964 @default.
• W1992502502 hasConcept C130635790 @default.
• W1992502502 hasConcept C145148216 @default.
• W1992502502 hasConcept C162356407 @default.
• W1992502502 hasConcept C177322064 @default.
• W1992502502 hasConcept C178790620 @default.
• W1992502502 hasConcept C185544564 @default.
• W1992502502 hasConcept C185592680 @default.
• W1992502502 hasConcept C191897082 @default.
• W1992502502 hasConcept C192562407 @default.
• W1992502502 hasConcept C198291218 @default.
• W1992502502 hasConcept C2993203755 @default.
• W1992502502 hasConcept C43617362 @default.
• W1992502502 hasConcept C68709404 @default.
• W1992502502 hasConcept C87355193 @default.
• W1992502502 hasConcept C98536072 @default.
• W1992502502 hasConceptScore W1992502502C107872376 @default.
• W1992502502 hasConceptScore W1992502502C111309251 @default.
• W1992502502 hasConceptScore W1992502502C113196181 @default.
• W1992502502 hasConceptScore W1992502502C121073033 @default.
• W1992502502 hasConceptScore W1992502502C121332964 @default.
• W1992502502 hasConceptScore W1992502502C130635790 @default.
• W1992502502 hasConceptScore W1992502502C145148216 @default.
• W1992502502 hasConceptScore W1992502502C162356407 @default.
• W1992502502 hasConceptScore W1992502502C177322064 @default.
• W1992502502 hasConceptScore W1992502502C178790620 @default.
• W1992502502 hasConceptScore W1992502502C185544564 @default.
• W1992502502 hasConceptScore W1992502502C185592680 @default.
• W1992502502 hasConceptScore W1992502502C191897082 @default.
• W1992502502 hasConceptScore W1992502502C192562407 @default.
• W1992502502 hasConceptScore W1992502502C198291218 @default.
• W1992502502 hasConceptScore W1992502502C2993203755 @default.
• W1992502502 hasConceptScore W1992502502C43617362 @default.
• W1992502502 hasConceptScore W1992502502C68709404 @default.
• W1992502502 hasConceptScore W1992502502C87355193 @default.
• W1992502502 hasConceptScore W1992502502C98536072 @default.
• W1992502502 hasIssue "1" @default.
• W1992502502 hasLocation W19925025021 @default.
• W1992502502 hasOpenAccess W1992502502 @default.
• W1992502502 hasPrimaryLocation W19925025021 @default.
• W1992502502 hasRelatedWork W1987688288 @default.
• W1992502502 hasRelatedWork W2019735427 @default.
• W1992502502 hasRelatedWork W2029630292 @default.
• W1992502502 hasRelatedWork W2053026919 @default.
• W1992502502 hasRelatedWork W2143952493 @default.

• next