Abstract
We report the present status of the mass-spectrometer MASHA (Mass-Analyzer of Supper Heavy Atoms) designed for determination of the masses of superheavy elements. The mass-spectrometer is connected to the U-400M cyclotron of the Flerov Laboratory for Nuclear Reactions (FLNR) JINR, Dubna. The first experiments on mass-measurements for 112 and 114 elements will be performed in the upcoming 2010. For this purpose a hot catcher, based on a graphite stopper, is constructed. The α-decay of the superheavy nuclides or spontaneous fission products will be detected with a silicon 192 strips detector. The experimental program of future investigations using the technique of a gas catcher is discussed. It should be regarded as an alternative of the classical ISOL technique. The possibilities are considered for using this mass-spectrometer for laser spectroscopy of nuclei far off-stability.
Similar content being viewed by others
References
Eichler, R., Aksenov, N.V., Belozerov, A.V., Bozhikov, G.A., Chepigin, V.I., Dmitriev, S.N., Dressler, R., Gäggeler, H.W., Gorshkov, V.A., Haenssler, F., Itkis, M.G., Laube, A., Lebedev, V.Ya., Malyshev, O.N., Oganessian, Yu.Ts., Petrushkin, O.V., Piguet, D., Rasmussen, P., Shishkin, S.V., Shutov, A.V., Svirikhin, A.I., Tereshatov, E.E., Vostokin, G.K., Wegrzecki, M., Yeremin, A.V.: Chemical characterization of element 112. Nature 447, 72 (2007)
Oganessian, Yu.Ts., Shchepunov, V.A., Dmitriev, S.N., Itkis, M.G., Gulbekyan, G.G., Khabarov, M.V., Bekhterev, V.V., Bogomolov, A.A., Efremov, S.L., Pashenko, S.V., Stepantsov, S.V., Yeremin, A.V., Yavor, M.I., Kalimov, A.G.: The project of the mass separator of atomic nuclei produced in heavy ion induced reactions. Nucl. Instrum. Methods Phys. Res. B 204, 606 (2003)
Efremov, A., Bekhterev, V., Bogomolov, S., Gulbekyan, G., Lebedev, A.N., Loginov, V.N., Smirnov, Yu.I., Leporis, M.: The 2.45 GHz ECR ion source for the first stage of the DRIBs project. Nucl. Instrum. Methods Phys. Res. B204, 368 (2003)
Gulbekian, G.G., Oganessian, Yu.Ts.: The Dubna project for radioactive ion beams. In: Proceedings of the International Conference on Nuclear Physics SHELLS-50, Dubna, Russia, 21–24 April 1999 (World Scientific Singapure), p. 61 (2000)
Savard, G., Clark, J., Boudreau, C., Buchinger, F., Crawford, J.E., Geissel, H., Greene, J.P., Gulick, S., Heinz, A., Lee, J.K.P., Levand, A., Maier, M., Muenzenberg, G., Scheidenberger, C., Seweryniak, D., Sharma, K.S., Sprouse, G., Vaz, J., Wang, J.C., Zabransky, B.J., Zhou, Z., the S258 Collaboration: Development and operation of gas catchers to thermalize fusion–evaporation and fragmentation products. Nucl. Instrum. Methods Phys. Res. B 204, 582 (2003)
Neumayr, J.B., Beck, L., Habs, D., Heinz, S., Szerypo, J., Thirolf, P.G., Varentsov, V., Voit, F., Ackermann, D., Beck, D., Block, M., Di, Z., Eliseev, S.A., Geissel, H., Herfurth, F., Hessberger, F.P., Hofmann, S., Kluge, H.-J., Mukherjee, M., Muenzenberg, G., Petrick, M., Quint, W., Rahaman, S., Rauth, C., Rodrıguez, D., Scheidenberger, C., Sikler, G., Wang, Z., Weber, C., Plass, W.R., Breitenfeldt, M., Chaudhuri, A., Marx, G., Schweikhard, L., Dodonov, A.F., Novikov, Y., Suhonen, M.: The ion-catcher device for SHIPCATCHER. Nucl. Instrum. Methods Phys. Res. B 244, 489 (2006)
Isotope Science Facility at Michigan State University: Upgrade of the NSCL Rare Isotope Research Capabilities. MSUCL-1345 November (2006)
Szilner, S., Corradi, L., Pollarolo, G., Beghini, S., Behera, B.R., Fioretto, E., Gadea, A., Haas, F., Latina, A., Montagnoli, G., Scarlassara, F., Stefanini, A.M., Trotta, M., Vinodkumar, A.M., Wu., Y.: Multinucleon transfer processes in 40Ca + 208Pb. Phys. Rev. C 71, 044610 (2005)
Otten, E.W.: Nuclear radii and moments of unstable isotopes. Treatise Heavy-Ion Sci. 8, 517 (1989)
Marginean, N., Corradi, L., Beghini, S., Behera, B.R., Fioretto, E., Farnea, E., Gadea, A., Montagnoli, G., Pollarolo, G., Pokrovsky, I.V., Scarlassara, F., Stefanini, A.M., Szilner, S., Trotta, M., Ur, C.A., Rusu, C., Vinodkumar, A.M., de Angelis, G., della Vedova, F., Duchene, G., Lenzi, S.M., Lunardi, S., Marginean, R., Menegazzo, R., Napoli, D.R., Nespolo, M.: PRISMA+CLARA collaboration: Production of neutron-rich isotopes in 82Se + 238U grazing reaction. Int. Symp. Exotic Nuclei AIP Conf. Proc. 912, 13 (2007)
Yeremin, A.V.: Regularities of formation and survival probability of compound nuclei in the region of Z ≥ 82: study of complete-fusion reactions with heavy ions using the kinematic separator VASSILISSA. Physics Part. Nucl. 38, 492 (2007)
Savard, G., Pardo, R.: Proposal for the 252Cf Source Upgrade to the ATLAS Facility. Argonne, Argonne National Laboratory, Physics Division (2005)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Rodin, A.M., Belozerov, A.V., Dmitriev, S.N. et al. Application of the mass-spectrometer MASHA for mass-spectrometry and laser-spectroscopy. Hyperfine Interact 196, 279–285 (2010). https://doi.org/10.1007/s10751-009-0145-z
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10751-009-0145-z