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Johnson Matthey Technol. Rev., 2016, 60, (1), 29

doi:10.1595/205651316x689954

铂族元素同位素的发现:2016年更新

删除了同位素209 Pt 并收录了发现的Rh 和Pd的新同位素

基于Kurcewiz等人在预印件(2)中报道的对其发现的权利要求,2012年回顾(1)中收录了同位素209Pt。然而,实际论文发表时(3)认为209Pt的证据不尽人意,故不再收录。因此表一中修改了已知铂同位素的数量。此外,表二和表三中分别确定并收录了铑和钯各自的一个其它同位素。

The Discoverers of the Isotopes of the Platinum Group of Elements: Update 2016

A deletion of the isotope 209Pt and the inclusion of new isotopes found for Rh and Pd

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In the 2012 review (1) the isotope 209Pt was included based on a claim to its discovery by Kurcewiz et al. which was reported in a preprint (2). However when the actual paper was published (3) it was considered that the evidence for 209Pt was unsatisfactory and it was no longer included. Therefore the number of known isotopes for platinum has been amended in Table I. In addition one further isotope each for rhodium and palladium have been identified and are included in Table II and Table III respectively.

Table I

Total Number of Isotopes and Mass Ranges Known for Each Platinum Group Element to 2016

ElementNumber of known isotopesKnown mass number ranges
Ru 40 85–124
Rh 39 89–127
Pd 39 91–129
Os 43 161–203
Ir 42 164–205
Pt 43 166–208
Table II

New Isotope for Rhodium

Mass NumberHalf-lifeDecay modeYear of discoveryDiscoverersReference
127 20 ms β 2015 Lorusso et al. 4
Table III

New Isotope for Palladium

Mass NumberHalf-lifeDecay modeYear of discoveryDiscoverersReference
129 31 ms β 2015 Lorusso et al. 4

β: beta or neutron decay for neutron rich nuclides is the emission of an electron and an anti-electron neutrino caused by a neutron in the nucleus decaying to a proton so the mass number of the daughter nuclide remains the same but the atomic number increases by one

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References

  1. 1
    J. W. Arblaster, Platinum Metals Rev., 2012, 56, (4), 271 LINK https://www.technology.matthey.com/article/56/4/271-271/
  2. 2
    J. Kurcewicz, F. Farinon, H. Geissel, S. Pietri, C. Nociforo, A. Prochazka, H. Weick, J. S. Winfield, A. Estradé, P. R. P. Allegro, A. Bail, G. Bélier, J. Benlliure, G. Benzoni, M. Bunce, M. Bowry, R. Caballero-Folch, I. Dillmann, A. Evdokimov, J. Gerl, A. Gottardo, E. Gregor, R. Janik, A. Kelić-Heil, R. Knöbel, T. Kubo, Yu. A. Litvinov, E. Merchan, I. Mukha, F. Naqvi, M. Pfützner, M. Pomorski, Zs. Podolyák, P. H. Regan, B. Riese, M. V. Ricciardi, C. Scheidenberger, B. Sitar, P. Spiller, J. Stadlmann, P. Strmen, B. Sun, I. Szarka, J. Taïeb, S. Terashima, J. J. Valiente-Dobón, M. Winkler and Ph. Woods, eprint arXiv:1112.0521v1 [nucl-ex], 2nd December, 2011 LINK http://arxiv.org/abs/1112.0521v1
  3. 3
    J. Kurcewicz, F. Farinon, H. Geissel, S. Pietri, C. Nociforo, A. Prochazka, H. Weick, J. S. Winfield, A. Estradé, P. R. P. Allegro, A. Bail, G. Bélier, J. Benlliure, G. Benzoni, M. Bunce, M. Bowry, R. Caballero-Folch, I. Dillmann, A. Evdokimov, J. Gerl, A. Gottardo, E. Gregor, R. Janik, A. Kelić-Heil, R. Knöbel, T. Kubo, Yu. A. Litvinov, E. Merchan, I. Mukha, F. Naqvi, M. Pfützner, M. Pomorski, Zs. Podolyák, P. H. Regan, B. Riese, M. V. Ricciardi, C. Scheidenberger, B. Sitar, P. Spiller, J. Stadlmann, P. Strmen, B. Sun, I. Szarka, J. Taïeb, S. Terashima, J. J. Valiente-Dobón, M. Winkler and Ph. Woods, Phys. Lett. B, 2012, 717, (4–5), 371 LINK http://dx.doi.org/10.1016/j.physletb.2012.09.021
  4. 4
    G. Lorusso, S. Nishimura, Z. Y. Xu, A. Jungclaus, Y. Shimizu, G. S. Simpson, P.-A. Söderström, H. Watanabe, F. Browne, P. Doornenbal, G. Gey, H. S. Jung, B. Meyer, T. Sumikama, J. Taprogge, Zs. Vajta, J. Wu, H. Baba, G. Benzoni, K. Y. Chae, F. C. L. Crespi, N. Fukuda, R. Gernhäuser, N. Inabe, T. Isobe, T. Kajino, D. Kameda, G. D. Kim, Y.-K. Kim, I. Kojouharov, F. G. Kondev, T. Kubo, N. Kurz, Y. K. Kwon, G. J. Lane, Z. Li, A. Montaner-Pizá, K. Moschner, F. Naqvi, M. Niikura, H. Nishibata, A. Odahara, R. Orlandi, Z. Patel, Zs. Podolyák, H. Sakurai, H. Schaffner, P. Schury, S. Shibagaki, K. Steiger, H. Suzuki, H. Takeda, A. Wendt, A. Yagi and K. Yoshinaga, Phys. Rev. Lett., 2015, 114, (19), 192501 LINK http://dx.doi.org/10.1103/PhysRevLett.114.192501
 

The Author

John W. Arblaster is interested in the history of science and the evaluation of the thermodynamic and crystallographic properties of the elements. Now retired, he previously worked as a metallurgical chemist in a number of commercial laboratories and was involved in the analysis of a wide range of ferrous and non-ferrous alloys.

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