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Journal Articles

Online chemical adsorption studies of Hg, Tl, and Pb on SiO $_{2}$ and Au surfaces in preparation for chemical investigations on Cn, Nh, and Fl at TASCA

Lens, L.*; Yakushev, A.*; Dllmann, Ch. E.*; Asai, Masato; Ballof, J.*; Block, M.*; David, H. M.*; Despotopulos, J.*; Di Nitto, A.*; Eberhardt, K.*; et al.

Radiochimica Acta, 106(12), p.949 - 962, 2018/12

AA2018-0417.pdf:0.99MB

https://doi.org/10.1515/ract-2017-2914

Times Cited Count：8 Percentile：62.99(Chemistry, Inorganic & Nuclear)

Online gas-solid adsorption studies with single atom quantities of Hg, Tl, and Pb on SiO $_{2}$ and Au surfaces were carried out using short-lived radioisotopes with half-lives in the range of 4-49 s. This is a model study to measure adsorption enthalpies of superheavy elements Cn, Nh, and Fl. The short-lived isotopes were produced and separated by the gas-filled recoil separator TASCA at GSI. The products were stopped in He gas, and flushed into gas chromatography columns made of Si detectors whose surfaces were covered by SiO $_{2}$ or Au. The short-lived Tl and Pb were successfully measured by the Si detectors with the SiO $_{2}$ surface at room temperature. On the other hand, the Hg did not adsorb on the SiO $_{2}$ surface, but adsorbed on the Au surface. The results demonstrated that the adsorption properties of short-lived Hg, Tl, and Pb could be studied with this setup, and that this method is applicable to the experiment for Cn, Nh, and Fl.

Journal Articles

Nuclear structure of elements with from alpha spectroscopy

Asai, Masato; Heberger, F. P.*; Lopez-Martens, A.*

Nuclear Physics A, 944, p.308 - 332, 2015/12

https://doi.org/10.1016/j.nuclphysa.2015.06.011

Times Cited Count：54 Percentile：95.68(Physics, Nuclear)

Nuclear structure of Z = 100-109 nuclei studied through -decay spectroscopy have been reviewed. Experimental techniques and methods concerning separation techniques, summing effects in spectra, and the use of digital electronics for -decay spectroscopy have been described in detail. The presentation of the experimental results and the physics discussion were focused on nuclear structure systematics in even-Z nuclei along the N = 151, 153, and 155 isotonic lines, where most progress has been achieved in the last 10 years.

JAEA Reports

Achievement in research on ion beam application under the scientific cooperation program with the Gesellschaft fr Schwerionenforschung mbH

Yoshida, Masaru; Maekawa, Yasunari

JAERI-Review 2003-002, 30 Pages, 2003/03

JAERI-Review-2003-002.pdf:1.68MB

The Japan Atomic Energy Research Institute (JAERI) and the Gesellschaft fur Schwerionenforschung mbH (GSI) signed a memorandum of "Research and Development in the Field of Ion Beam Application" in January, 1991 and started the cooperative research program. The cooperation has been implemented by means of joint research between JAERI and GSI, exchange of scientific and technical experts, and providing mutual exchange of research materials as well as technical information. This report summarizes the cooperative research activities under the cooperative research program in the last 12 years.

Journal Articles