Metastable States of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Re</mml:mi></mml:mrow><mml:mrow><mml:mn>180</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Ir</mml:mi></mml:mrow><mml:mrow><mml:mn>191</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www

Fischer, V. K.

doi:10.1103/physrev.99.764

Cited by 54 publications

(1 citation statement)

References 21 publications

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“…This half-life is consistent with the currently accepted value of 19.5(1) min. Kistiakowsky announced the discovery of 180 Re in the paper "Metastable states of Re 180 , Ir 191 , Au 192 , Pb 201 , and Pb 203 "[66]. The Berkeley linear accelerator was used to bombard metallic tungsten targets with 31.5 MeV protons.In 1950, the observation of183 Re was reported in the paper "Os 182 and Os 183 , new radioactive osmium isotopes" by Stover[69].…”

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Discovery of tantalum, rhenium, osmium, and iridium isotopes

Robinson

Thoennessen

2012

Atomic Data and Nuclear Data Tables

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Currently, thirty-eight tantalum, thirty-eight rhenium, thirty-nine osmium, and thirty-eight iridium, isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.The discovery of tantalum, rhenium, osmium, and iridium isotopes is discussed as part of the series summarizing the discovery of isotopes, beginning with the cerium isotopes in 2009 [1]. Guidelines for assigning credit for discovery are (1) clear identification, either through decay-curves and relationships to other known isotopes, particle or γ-ray spectra, or unique mass and Z-identification, and (2) publication of the discovery in a refereed journal. The authors and year of the first publication, the laboratory where the isotopes were produced as well as the production and identification methods are discussed. When appropriate, references to conference proceedings, internal reports, and theses are included. When a discovery includes a half-life measurement the measured value is compared to the currently adopted value taken from the NUBASE evaluation [2] which is based on the ENSDF database [3]. In cases where the reported half-life differed significantly from the adopted half-life (up to approximately a factor of two), we searched the subsequent literature for indications that the measurement was erroneous. If that was not the case we credited the authors with the discovery in spite of the inaccurate half-life. All reported half-lives inconsistent with the presently adopted half-life for the ground state were compared to isomers half-lives and accepted as discoveries if appropriate following the criterium described above.Good examples why publications in conference proceedings should not be considered are 118 Tc and 120 Ru which had been reported as being discovered in a conference proceeding [4] but not in the subsequent refereed publication [5]. The initial literature search was performed using the databases ENSDF [3] and NSR [6] of the National Nuclear Data Center at Brookhaven National Laboratory. These databases are complete and reliable back to the early 1960's. For earlier references, several editions of the Table of Isotopes were used [7-12]. A good reference for the discovery of the stable isotopes was the second edition of Aston's book "Mass Spectra and Isotopes" [13].

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confidence: 99%