Press/Media items

Scientist has found the properties for Lawrencium

Press/Media: ResearchPopular

12/04/2015

Publication in the Empire State Tribune concerning our article in Nature on the measurement of the first ionization potential of lawrencium (Nature 520, 209 (2015), cover page feature).

 

n the cover story of the newest copy of Nature exposes one of the basic atomic properties of an element that lives for only 27 seconds and can only be created through a particle accelerator. It is the outcome of a global collaboration and a scientist from Massey University.

Dr Anastasia Borschevsky, a subordinate member at the Centre for Theoretical Chemistry and Physics, and who is also employed at the Helmholtz Institut Mainz, located in Germany, is a fraction of the international team that contains scientist from Japan, Germany, Switzerland, and Israel.

The group examined element 103, Lawrencium, which is a heavyweight element with electrons more than 100. Lawrencium is unsteady and does not exist in nature, which means investigations about the element are numbered. Scientists made atoms that existed for around 27 seconds through a particle accelerator.

 

A new novel technique developed at the Japan Atomic Energy Agency tandem accelerator located in Tokai, Japan is used by scientists to calculate the ionization capacity – the amount of energy needed to eliminate outermost electron of an element. They also did a hypothetical calculation of the ionization capacity, organized by Massey University together with coworkers from Tel Aviv University in Israel.

They discovered that very small energy – only 4.96 electron volts – was needed ionize Lawrencium and this was nearly the same to the designed value. For the majority of the elements in the Periodic Table, the voltage is very low. Energies are usually very little. For example, the quantity of energy a mosquito consumes when it flies is around one trillion electron volts.

The research is methodically important due to the fact the this is the heaviest element for which the ionization energy has been calculated. It also helps verify the placement of lawrencium in the Periodic Table of Elements and gives more opportunities to knowing the chemical and physical properties of heavyweight elements.

References

Related Publications
  1. Measurement of the first ionization potential of lawrencium, element 103

    Sato, T. K., Asai, M., Borschevsky, A., Stora, T., Sato, N., Kaneya, Y., Tsukada, K., Duellmann, C. E., Eberhardt, K., Eliav, E., Ichikawa, S., Kaldor, U., Kratz, J. V., Miyashita, S., Nagame, Y., Ooe, K., Osa, A., Renisch, D., Runke, J., Schaedel, M., Thoerle-Pospiech, P., Toyoshima, A. & Trautmann, N., 9-Apr-2015, In : Nature. 520, 7546, p. 209-U153 4 p.

    Research output: Contribution to journalArticleAcademicpeer-review

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