--- title: "Partial alpha-decay half-lives for alpha-emitting Osmium isotopes: accurate determinations by a semi-empirical model • 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/6ad2a767639f62b11adbd2cc" 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_~UGFydGlhbCBhbHBoYS1kZWNheSBoYWxmLWxpdmVzIGZvciBhbHBoYS1lbWl0dGluZyBPc21pdW0gaXNvdG9wZXM6IGFjY3VyYXRlIGRldGVybWluYXRpb25zIGJ5IGEgc2VtaS1lbXBpcmljYWwgbW9kZWw%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_~Ty4gQS4gUC4gVGF2YXJlczsgTS4gTC4gVGVycmFub3Zh%2Cdetalhe_~MTYvMDEvMjAyMA%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmQyY2Mi%2Cs_4cJceVSgtQQflwJZ.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Partial alpha-decay half-lives for alpha-emitting Osmium isotopes: accurate determinations by a semi-empirical model • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~UGFydGlhbCBhbHBoYS1kZWNheSBoYWxmLWxpdmVzIGZvciBhbHBoYS1lbWl0dGluZyBPc21pdW0gaXNvdG9wZXM6IGFjY3VyYXRlIGRldGVybWluYXRpb25zIGJ5IGEgc2VtaS1lbXBpcmljYWwgbW9kZWw%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_~Ty4gQS4gUC4gVGF2YXJlczsgTS4gTC4gVGVycmFub3Zh%2Cdetalhe_~MTYvMDEvMjAyMA%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmQyY2Mi%2Cs_4cJceVSgtQQflwJZ.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Physics Note****Published** # **Partial alpha-decay half-lives for alpha-emitting Osmium isotopes: accurate determinations by a semi-empirical model** **O. A. P. Tavares; M. L. Terranova** 01/16/2020 [**Download PDF **1.7 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbd2cc/pdf) [**Contact owner**](mailto:apub@cbpf.br?subject=Partial%20alpha-decay%20half-lives%20for%20alpha-emitting%20Osmium%20isotopes%3A%20accurate%20determinations%20by%20a%20semi-empirical%20model) ## **Publication details**
Authors
O. A. P. Tavares; M. L. Terranova
Type
Physics Note
Status
Published
Publication date
16/01/2020
Description
Partial alpha-decay half-life-values for twenty-four cases of alpha-decaying Osmium isotopes (161−174, 184, 186−188Os) have been obtained in the framework of a semi-empirical, one-parameter model based on the quantum mechanical tunneling mechanism through a potential barrier. Here the Coulomb, centrifugal and overlapping contributions to the barrier have been considered within the spherical nucleus approximation. The calculation method enabled to reproduce, within a factor 2, the measured half-lives for ground-state to ground-state (gs-gs) α-transitions of twelve artificially produced Osmium isotopes (162−172, 174Os) and of two naturally occurring isotopes (184, 186Os). In addition, a half-life prediction of T½ = (2.0 ± 0.1) × 1016 a has been found for the gs-gs α-transition of naturally occurring 187Os isotope. Two cases of gamma quanta accompanying α-decay possible of being accessed experimentally have been predicted: 184Os decaying to the first level of 180W, with T½ = (0.73 ± 0.04) × 1015 a, and 186Os decaying to the first level of 182W, with T½ = (3.9 ± 0.2) × 1016 a. New α-decay schemes for 184Os, 186Os, 187Os isotopes have been anticipated, and estimated T½-values for rarer cases of α-transitions of Osmium isotopes have been reported.
Year
2020
Number
CBPF-NF-004/2020
Linked to a thesis
No
Linked to a grant
No
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