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MASHA separator on the heavy ion beam for determining masses and nuclear physical properties of isotopes of heavy and superheavy elements |
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| Authors: | A M Rodin A V Belozerov D V Vanin V Yu Vedeneyev A V Gulyaev A V Gulyaeva S N Dmitriev M G Itkis J Kliman N A Kondratiev L Krupa Yu Ts Oganessian V S Salamatin I Sivá?ek S V Stepantsov E V Chernysheva S A Yuchimchuk |
| Affiliation: | 1. Joint Institute for Nuclear Research, Flerov Laboratory of Nuclear Reactions, ul. Joliot-Curie 6, Dubna, Moscow oblast, 141980, Russia 2. Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, 84228, Slovakia 3. Institute of Experimental and Applied Physics, Czech Technical University in Prague, Horská 3a/22, Prague 2, 12800, Czech Republic |
| Abstract: | The MASHA mass spectrometer designed for identifying superheavy elements by their masses is described. The separation efficiency has been measured in the autonomous mode using four calibrated leakages of noble gases. The total separation efficiency of the mass spectrometer with a hot catcher and an ion source based on the electron cyclotron resonance has been determined using the 40Ar beam. Test experiments have been carried out, in which α-active Hg isotopes produced in complete fusion reaction 40Ar + 144Sm → 184 ? xn Hg + xn, have been detected in the focal plane of the mass spectrometer. The separation time and efficiency have been determined for short-lived Hg isotopes. |
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