Martín Sánchez A, Mora Rodríguez R. Measurement of the intensities of the long-range alpha particles from
212Po.
Appl Radiat Isot 2023;
200:110953. [PMID:
37481923 DOI:
10.1016/j.apradiso.2023.110953]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/21/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
212Bi partially decays by β- populating excited levels of 212Po. Some of these excited states of 212Po decay with very low probability by direct alpha-particle emissions instead of a gamma-alpha cascade. This effect was known since the earliest times after the discovery of radioactivity. Emission energies of these long-range alpha particles were measured in the past, but the activity ratios were not accurately determined. Relative intensities for these decays have now been experimentally determined. Results agree with data previously reported. It is the first time that an uncertainty estimate is provided for such experiment.
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