--- title: "Radioactive Decay of Radium and Randon Isotopes by 14C Emission • CBPF Index" description: "CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community." canonical_url: "https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb7d7" locale: en meta: "og:description": "CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community." "og:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~UmFkaW9hY3RpdmUgRGVjYXkgb2YgUmFkaXVtIGFuZCBSYW5kb24gSXNvdG9wZXMgYnkgPG1hdGg-MTRDPC9tYXRoPiBFbWlzc2lvbg%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_~SC4gRy4gZGUgQ2FydmFsaG87IEouIEIuIE1hcnRpbnM7IE8uIEEuIFAuIFRhdmFyZXM%2Cdetalhe_1986%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmI3ZDci%2Cs_WErqv8J3Uf7bJmW4.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Radioactive Decay of Radium and Randon Isotopes by 14C Emission • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~UmFkaW9hY3RpdmUgRGVjYXkgb2YgUmFkaXVtIGFuZCBSYW5kb24gSXNvdG9wZXMgYnkgPG1hdGg-MTRDPC9tYXRoPiBFbWlzc2lvbg%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_~SC4gRy4gZGUgQ2FydmFsaG87IEouIEIuIE1hcnRpbnM7IE8uIEEuIFAuIFRhdmFyZXM%2Cdetalhe_1986%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmI3ZDci%2Cs_WErqv8J3Uf7bJmW4.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Physics Note****Published** # **Radioactive Decay of Radium and Randon Isotopes by **14C\^{14}C\14C** Emission** **H. G. de Carvalho; J. B. Martins; O. A. P. Tavares** 1986 [**Download PDF **0.7 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb7d7/pdf) [**Contact owner**](mailto:apub@cbpf.br?subject=Radioactive%20Decay%20of%20Radium%20and%20Randon%20Isotopes%20by%20%3Cmath%3E14C%3C%2Fmath%3E%20Emission) ## **Publication details**
Authors
H. G. de Carvalho; J. B. Martins; O. A. P. Tavares
Type
Physics Note
Status
Published
Publication date
1986
Description
Estimates are given for the half-lives of the radioactive decay of radium and radon isotopes by emission of <math>^{14}C\,\!</math> nuclei. The classical one-dimensional WKB approximation for penetration through a pure Coulomb barrier is used in the calculations. Results indicate that the naturally occurring radon isotopes are <math>^{14}C\,\!</math> emitters like their parents radium isotopes whose activities by emission of <math>^{14}C\,\!</math> nuclei have been recently measured. The predicted half-lives for decay of <math>^{219}Rn\,\!</math> , <math>^{220}Rn\,\!</math> and <math>^{222}Rn\,\!</math> by emission of <math>^{14}C\,\!</math> nuclei are in the range <math>10^{11}-10^{13}\,\!</math> yr. For radium and radon isotopes the minimum half life is obtained when the double-magic <math>^{208}Pb\,\!</math> and the semi-magic <math>^{206}Hg\,\!</math> are the daughter products, respectively, of these new radioactive decay modes.
Year
1986
Number
CBPF-NF-015/86
Linked to a thesis
No
Linked to a grant
No
```json {"@context":"https://schema.org","@graph":[{"@id":"https://index.cbpf.br/en#website","@type":"WebSite","description":"O CBPF INDEX é o sistema de acompanhamento da produção científica e tecnológica do CBPF. Nele é possível obter a lista de publicações de artigos, livros, relatórios técnicos, etc de toda a comunidade do CBPF.","inLanguage":"en-US","name":"CBPF Index","url":"https://index.cbpf.br/en","publisher":{"@id":"https://index.cbpf.br/#identity"},"translationOfWork":{"@id":"https://index.cbpf.br/#website"}},{"@id":"https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb7d7#webpage","@type":"WebPage","description":"CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community.","name":"Radioactive Decay of Radium and Randon Isotopes by \u003Cmath>14C\u003C/math> Emission","url":"https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb7d7","isPartOf":{"@id":"https://index.cbpf.br/en#website"},"potentialAction":[{"@type":"ReadAction","target":["https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb7d7"]}],"primaryImageOfPage":{"@id":"https://index.cbpf.br/#logo"}},{"@id":"https://index.cbpf.br/#identity","@type":"Organization","alternateName":"CBPF","description":"Unidade de pesquisa do Ministério da Ciência, Tecnologia e Inovação dedicada à pesquisa básica em Física, suas aplicações e à formação científica.","email":"web@cbpf.br","legalName":"Centro Brasileiro de Pesquisas Físicas/CBPF","name":"Centro Brasileiro de Pesquisas Físicas","taxID":"04.044.443/0001-35","telephone":"+55-21-2141-7100","url":"https://cbpf.br","address":{"@type":"PostalAddress","streetAddress":"Rua Dr. Xavier Sigaud, 150","addressLocality":"Rio de Janeiro","addressRegion":"RJ","postalCode":"22290-180","addressCountry":"BR"},"logo":{"@id":"https://index.cbpf.br/#logo"},"sameAs":["https://twitter.com/cbpf_mcti"]},{"@id":"https://index.cbpf.br/#logo","@type":"ImageObject","caption":"Centro Brasileiro de Pesquisas Físicas","contentUrl":"https://index.cbpf.br/icon-512x512-light.png","inLanguage":"en-US","url":"https://index.cbpf.br/icon-512x512-light.png"}]} ``` ## Sitemap See the full [sitemap](https://index.cbpf.br/sitemap.md) for all pages.