Ranges of radon and mercury isotopes with energies of 0.12-0.25 MeV/amu in aluminum

Oct 16, 2020, 5:10 PM
25m
Online

Online

Oral report Section 2. Experimental and theoretical studies of nuclear reactions. Section 2. Experimental and theoretical studies of nuclear reactions

Speaker

Elena Chernysheva (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research)

Description

The ranges in aluminum of radon and mercury isotopes, produced in xn-evaporation channels of the complete fusion reactions $^{40}$Ar+$^{144}$Sm, $^{36}$Ar+$^{148}$Sm, $^{40}$Ca+$^{144}$Nd, $^{48}$Ca+$^{142}$Nd and $^{40}$Ar+$^{166}$Er, have been measured in energy range of $0.12-0.25$ MeV/amu. The energies of the primary beams, delivered by the cyclotron U-400M, were measured by the time-of-flight method with an accuracy of 0.5% (FWHM). The evaporation residua energies and their energy spreads were calculated proposing consecutive neutron evaporation cascades from the compound nuclei produced at some depths in the target. The beam interruption method was applied for the isotope identification. Five thin aluminum absorbers were installed on a linear pneumatic actuator. In the accumulation mode, the foils were placed one under another, so that the reaction products were stopped at different depths in the proper foils. In the measurement mode, the foil array was extended to its full width so that each foil was placed opposite to the corresponding silicon detectors registered $\alpha$-decays of short-lived radon and mercury isotopes. The measured ranges have been compared with the predictions of SRIM code.

Primary authors

Elena Chernysheva (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Alexander Rodin (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Lubos Krupa (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research)

Co-authors

Alexander Gulyaev (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Anna Gulyaeva (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Michael Holik (Institute of Experimental and Applied Physics, Czech Technical University in Prague) Dusan Kamas (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Jan Kliman (Institute of Physics SASc, Bratislava,Slovak Republic) Alexander Komarov (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Alexey Novoselov (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Mr Antonin Opíchal (Palacký University in Olomouc, Czech Republic) Alexander Podshibyakin (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Jiri Pechousek (Palacký University in Olomouc, Czech Republic) Vladimir Salamatin (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Sergey Stepantsov (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Vyacheslav Vedeneev (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research) Sergey Yukhimchuk (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research)

Presentation materials