Search

Your search keyword '"Grigorenko, Leonid"' showing total 17 results
Start Over Author "Grigorenko, Leonid"
17 results on '"Grigorenko, Leonid"'

1. Proton-proton correlations observed in two-proton radioactivity of 94Ag

Author

Mukha, Ivan, Roeckl, Ernst, Batist, Leonid, Blazhev, Andrey, Doring, Joachim, Grawe, Hubert, Grigorenko, Leonid, Huyse, Mark, Janas, Zenon, Kirchner, Reinhard, La Commara, Marco, Mazzocchi, Chiara, Tabor, Sam L., and Van Duppen, Piet

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): Ivan Mukha (corresponding author) [1, 2, 3, 10]; Ernst Roeckl [1]; Leonid Batist [4]; Andrey Blazhev [1, 5]; Joachim Doring [1]; Hubert Grawe [1]; Leonid Grigorenko [6]; Mark Huyse [...]

Published
2006
Full Text
View/download PDF

2. Design of Linac-100 and Linac-30 for New Rare Isotope Facility Project DERICA at JINR

Author

Polozov, Sergey, Dyubkov, Vyacheslav, Fomichev, Andrey, Grigorenko, Leonid, Kulevoy, Timur, Lozeev, Yury, Lozeeva, Tatyana, and Samoshin, Alexandr

Subjects
Beam Dynamics in Linacs, Physics::Accelerator Physics, Nuclear Experiment, Accelerator Physics
Abstract

DERICA (Dubna Electron-Radioactive Ion Collider fAcility) is the new ambitious project under development at JINR, Dubna *. DERICA is proposed as the next step in RIB facilities development. It is planned that in the DERICA project the RIBs produced by the Fragment Separator, are stopped in a gas cell, are accumulated in the ion trap and then are transferred to the ion trap/charge breeder, creating the highest possible charge state for the further effective acceleration (system {gas cell - ion trap - ion trap/charge breeder}). From the accelerator point of view DERICA will include the driver LINAC-100 of heavy ions with Z=5-92 (energy up to 100 MeV/u) with operating mode close to CW, the fragment separator, the re-accelerator LINAC-30 of secondary beams with energies in the range 5-30 MeV/u), the fast ramping ring (energy, Proceedings of the 61\textsuperscript{st} ICFA ABDW on High-Intensity and High-Brightness Hadron Beams, HB2018, Daejeon, Korea

Published
2018
Full Text
View/download PDF

3. Scientific program of DERICA — prospective accelerator and storage ring facility for radioactive ion beam research

Author

Grigorenko, Leonid V., primary, Sharkov, Boris Yu., additional, Fomichev, Andrei S., additional, Barabanov, Aleksei L., additional, Bart, V., additional, Bezbakh, A.A., additional, Bogomolov, S.L., additional, Golovkov, Mikhail S., additional, Gorshkov, A.V., additional, Dmitriev, Sergei N., additional, Eremin, V.K., additional, Ershov, Sergei N., additional, Zhukov, M.V., additional, Kalagin, I.V., additional, Karpov, A.V., additional, Katayama, T., additional, Kiselev, O.A., additional, Korsheninnikov, Aleksei A., additional, Krupko, Sergei A., additional, Kulevoi, T.V., additional, Litvinov, Yu.A., additional, Lychagin, E.V., additional, Maksimkin, I.P., additional, Meshkov, Igor' N., additional, Mukha, I.G., additional, Nikol'skii, E.Yu., additional, Parfenova, Yu.L., additional, Parkhomchuk, Vasilii V., additional, Polozov, Sergei M., additional, Pfutzner, M., additional, Sidorchuk, Sergei I., additional, Simon, H., additional, Slepnev, R.S., additional, Ter-Akopian, Gurgen M., additional, Trubnikov, Grigorii V., additional, Chudoba, V., additional, Scheidenberger, K., additional, Sharov, P.G., additional, Shatunov, P.Yu., additional, Shatunov, Yurii M., additional, Shvetsov, Valery N., additional, Shulgina, N.B., additional, Yukhimchuk, A.A., additional, and Jaramyshev, S., additional

Published
2018
Full Text
View/download PDF

4. Status of the Acculinna-2 RIB Fragment Separator

Author

Beeckman, William, Antoine, Sylvain, Bocher, Patrice, Cavellier, Matthieu, Cosson, Olivier, Fomichev, Andrey, Forest, Frederick, Grigorenko, Leonid, Huttin, Nicolas, Jehanno, Patrice, Jivkov, Petko, Kazacha, Vladimir, Kreiss, Alfred, Krupko, Sergey, Lancelot, Jean-Luc, Leray, Marie-Julie, Milpied, Xavier, Stepantsov, Sergey, Tasset, Olivier, and Ter-Akopian, Gurgen

Subjects
Radioactive Ion Beam Facilities, Accelerator Physics
Abstract

Operated since 1996, the ACCULINNA RIB fragment separator has provided scientific results recognized by the nuclear physics community. In 2008 it was decided to build a new separator, ACCULINNA-2 which should deliver RIBs produced with 35-60 A MeV primary heavy-ion beams with 3 ≤ Z ≤ 36. It is optimized for large RIB intensities and high precision studies of direct reactions populating nuclear systems near and beyond the drip lines through sophisticated correlation experiments*. Late 2011, SIGMAPHI got a global contract for optics check, design, fabrication, installation and alignment of the complete ACCULINNA-2. It includes magnets, vacuum and PS for about 40 magnets, from small correctors to 1-6 tons quads, 14 tons dipoles and 6- and 8-poles. We describe the evolution of the project, from functional needs to working system. Thanks to the early involvement of the industrial partner, the collaborative spirit and the freedom of tradeoff between magnet, PS and vacuum chamber, the final product meets all and even exceeds most requirements while meeting industrial needs for standardization. The next step of the upgrade, a zero-angle spectrometer is also reported., Proceedings of the 13th Heavy Ion Accelerator Technology Conference, HIAT2015, Yokohama, Japan

Published
2016
Full Text
View/download PDF

6. Exclusive measurements of nuclear breakup reactions of 17Ne

Author

INPC 2013 – International Nuclear Physics Conference, Wamers, Felix, Marganiec, Justyna, Aksouh, Farouk, Aksyutina, Yuliya, Álvarez-Pol, Héctor, Aumann, Thomas, Beceiro-Novo, Saul, Bertulani, Carlos A., Boretzky, Konstanze, Garcia Borge, Maria José, Chartier, Marielle, Chatillon, Audrey, Chulkov, Leonid V., Cortina Gil, Dolores, Egorova, Irina A., Emling, Hans, Ershova, Olga, Forssén, Christian, Fraile Prieto, Luis Mario, Fynbo, Hans Otto Uldall, Galaviz Redondo, Daniel, Geissel, Hans, Grigorenko, Leonid V., Heil, Michael, Hoffmann, Dieter H. H., Hoffmann, Jan, Johansson, Håkan T., Jonson, Björn, Karagiannis, Christos, Karakoç, Mesut, Kiselev, Oleg A., Kratz, Jens-Volker, Kulessa, Reinhard, Kurz, Nikolaus, Langer, Christoph, Lantz, Mattias, Larsson, Kristian, Le Bleis, Tudi, Lemmon, Roy Crawford, Litvinov, Yuri A., Mahata, Kripamay, Müntz, Christian, Nilsson, Thomas, Nociforo, Chiara, Nyman, Göran Hugo, Ott, Wolfgang, Panin, Valerii, Parfenova, Yulia L., Paschalis, Stefanos, Perea Martinez, Angel, Plag, Ralf, Reifarth, René, Richter, Achim, Rodriguez-Tajes, Carme, Rossi, Dominic M., Riisager, Karsten, Savran, Deniz, Schrieder, Gerhard, Shulgina, Natalia B., Simon, Haik, Stroth, Joachim, Sümmerer, Klaus, Taylor, Jonathan Thomas, Tengblad, Olof, Tengborn, Elisabeth, Weick, Helmut, Wimmer, Christine, Zhukov, Mikhail V., INPC 2013 – International Nuclear Physics Conference, Wamers, Felix, Marganiec, Justyna, Aksouh, Farouk, Aksyutina, Yuliya, Álvarez-Pol, Héctor, Aumann, Thomas, Beceiro-Novo, Saul, Bertulani, Carlos A., Boretzky, Konstanze, Garcia Borge, Maria José, Chartier, Marielle, Chatillon, Audrey, Chulkov, Leonid V., Cortina Gil, Dolores, Egorova, Irina A., Emling, Hans, Ershova, Olga, Forssén, Christian, Fraile Prieto, Luis Mario, Fynbo, Hans Otto Uldall, Galaviz Redondo, Daniel, Geissel, Hans, Grigorenko, Leonid V., Heil, Michael, Hoffmann, Dieter H. H., Hoffmann, Jan, Johansson, Håkan T., Jonson, Björn, Karagiannis, Christos, Karakoç, Mesut, Kiselev, Oleg A., Kratz, Jens-Volker, Kulessa, Reinhard, Kurz, Nikolaus, Langer, Christoph, Lantz, Mattias, Larsson, Kristian, Le Bleis, Tudi, Lemmon, Roy Crawford, Litvinov, Yuri A., Mahata, Kripamay, Müntz, Christian, Nilsson, Thomas, Nociforo, Chiara, Nyman, Göran Hugo, Ott, Wolfgang, Panin, Valerii, Parfenova, Yulia L., Paschalis, Stefanos, Perea Martinez, Angel, Plag, Ralf, Reifarth, René, Richter, Achim, Rodriguez-Tajes, Carme, Rossi, Dominic M., Riisager, Karsten, Savran, Deniz, Schrieder, Gerhard, Shulgina, Natalia B., Simon, Haik, Stroth, Joachim, Sümmerer, Klaus, Taylor, Jonathan Thomas, Tengblad, Olof, Tengborn, Elisabeth, Weick, Helmut, Wimmer, Christine, and Zhukov, Mikhail V.

Abstract

We have studied one-proton-removal reactions of about 500MeV/u 17Ne beams on a carbon target at the R3B/LAND setup at GSI by detecting beam-like 15O-p and determining their relative-energy distribution. We exclusively selected the removal of a 17Ne halo proton, and the Glauber-model analysis of the 16F momentum distribution resulted in an s2 contribution in the 17Ne ground state of about 40%.

Published
2014

7. The $^{8}$He and $^{10}$He spectra studied in the $(t$,$p)$ reaction

Author

Golovkov, M.S., Grigorenko, Leonid, Ter-Akopian, Gurgen, Fomichev, Andrey, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Pang, Danyang, Chudoba, V., Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Flerov Laboratory of Nuclear Reactions [Dubna] (FLNR), Joint Institute for Nuclear Research (JINR), RIKEN Nishina Center for Accelerator-Based Science [Wako] (RIKEN RNC), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Lion, Michel, Flerov Laboratory of Nuclear reaction (FLNR), JINR, and RIKEN Nishina Center (for Accelerator-Based Science)

Subjects
Resonance states, Physique, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], FOS: Physical sciences, Neutron halo, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 6He, Tritium gas target, 25.10.+s, 24.50.+g, 25.55.Hp, 25.60.Je, 21.60.Gx, 8He beams, Soft dipole mode, Hyperspherical harmonic method, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The low-lying spectra of 8He and 10He nuclei were studied in the 3H(6He, p)8He and 3H(8He, p)10He transfer reactions. The 0+ ground state (g.s.) of 8He and excited states, 2+ at 3.6 - 3.9 MeV and (1+) at 5.3 - 5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr, respectively. Some evidence for a 8He state at about 7.5 MeV was obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in 8He and relate it to the population of a 1- continuum (soft dipole excitation) with a peak value at about 3 MeV. The lowest energy group of events in the 10He spectrum was observed at ∼3 MeV with a cross section of ∼ 140 μb / sr. We argue that this result is consistent with the previously reported observation of 10He providing the new 10He g.s. position at about 3 MeV. © 2008 Elsevier B.V. All rights reserved., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2008

9. Properties of very n-rich He isotopes

Author

Fomichev, Andrey, Grigorenko, Leonid, Golovkov, M.S., Ter-Akopian, Gurgen, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Chudoba, V., Pang, Danyang, Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Fomichev, Andrey, Grigorenko, Leonid, Golovkov, M.S., Ter-Akopian, Gurgen, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Chudoba, V., Pang, Danyang, Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., and Zlatoustovskiy, S.V.

Abstract

Low-energy spectra of the 8,10He nuclei were investigated in the (t, p) -type reactions at small centre-of-mass angles using ̃ 25 AMeV beams of 6He and 8He nuclei. The 0+ ground state (g. s.) of 8He and excited states, 2+ at 3. 6-3. 9MeV and (1+) at 5. 3-5. 5MeV, were populated with cross-sections of 200, 100-250, and 90-125μb/sr, respectively. To account for a near-threshold anomaly observed in the 8He spectrum the population of a 1- continuum (soft dipole excitation) was considered. The lowest-energy group of events in the 10He spectrum was observed at ̃ 3 MeV with a cross-section of ̃ 140 μb/sr. This result is consistent with the previously reported observation of 10He providing a new g. s. position for 10He at about 3MeV. © Societá Italiana di Fisica / Springer-Verlag 2009., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2009

10. The 8He and 10He spectra studied in the (t, p) reaction

Author

Golovkov, M.S., Grigorenko, Leonid, Ter-Akopian, Gurgen, Fomichev, Andrey, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Pang, Danyang, Chudoba, V., Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Golovkov, M.S., Grigorenko, Leonid, Ter-Akopian, Gurgen, Fomichev, Andrey, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Pang, Danyang, Chudoba, V., Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., and Zlatoustovskiy, S.V.

Abstract

The low-lying spectra of 8He and 10He nuclei were studied in the 3H(6He, p)8He and 3H(8He, p)10He transfer reactions. The 0+ ground state (g.s.) of 8He and excited states, 2+ at 3.6 - 3.9 MeV and (1+) at 5.3 - 5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr, respectively. Some evidence for a 8He state at about 7.5 MeV was obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in 8He and relate it to the population of a 1- continuum (soft dipole excitation) with a peak value at about 3 MeV. The lowest energy group of events in the 10He spectrum was observed at ∼3 MeV with a cross section of ∼ 140 μb / sr. We argue that this result is consistent with the previously reported observation of 10He providing the new 10He g.s. position at about 3 MeV. © 2008 Elsevier B.V. All rights reserved., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2009

11. Soft dipole mode in 8He

Author

Grigorenko, Leonid, Golovkov, M.S., Ter-Akopian, Gurgen, Fomichev, Andrey, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Pang, Danyang, Chudoba, V., Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Grigorenko, Leonid, Golovkov, M.S., Ter-Akopian, Gurgen, Fomichev, Andrey, Oganessian, Yu.Ts., Gorshkov, V.A., Krupko, S.A., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Pang, Danyang, Chudoba, V., Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., and Zlatoustovskiy, S.V.

Abstract

The low-lying spectrum of 8He was studied in the 3H(6He, p)8He transfer reaction for small center of mass angles. The 0+ ground state (g.s.) of 8He and excited states, 2+ at 3.6-3.9 MeV and (1+) at 5.3-5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr. Some evidence for the excited state at about 7.5 MeV can be found in the data. The possible nature of the near-threshold anomaly above 2.14 MeV in 8He is related to the population of a 1- continuum (soft dipole excitation) with a peak energy value at about 3 MeV. This assumption can probably resolve the problem of a large uncertainty existing in the experimental data on the 8He 2+ state energy. © Pleiades Publishing, Ltd. 2009., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2009

12. Low-energy spectra of 8He and 10He studied in (t,p) type reactions in inverse kinematics

Author

Chudoba, V., Fomichev, Andrey, Grigorenko, Leonid, Golovkov, M.S., Gorshkov, V.A., Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Pang, Danyang, Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Vinogradov, Yu, Perevozchikov, V.V., Grishechkin, S.K., Chudoba, V., Fomichev, Andrey, Grigorenko, Leonid, Golovkov, M.S., Gorshkov, V.A., Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Pang, Danyang, Korsheninnikov, A.A., Kuzmin, E.A., Nikolskii, Yu, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Ninane, A., Hanappe, Francis, Stuttge, Louise, Yukhimchuk, Arkadiy, Vinogradov, Yu, Perevozchikov, V.V., and Grishechkin, S.K.

Abstract

Missing mass spectra for 8He and 10He obtained in the reactions 3H( 6He, p) 8He and 3H( 8He, p) 10He, respectively, are presented., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2009

13. Quest for the 10He nucleus

Author

Chudoba, V., Fomichev, Andrey, Golovkov, M.S., Gorshkov, Alexander A.V., Gorshkov, V.A., Grigorenko, Leonid, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Korsheninnikov, A.A., Nikolskii, Yu, Kuzmin, Vadim, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Chudoba, V., Fomichev, Andrey, Golovkov, M.S., Gorshkov, Alexander A.V., Gorshkov, V.A., Grigorenko, Leonid, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Korsheninnikov, A.A., Nikolskii, Yu, Kuzmin, Vadim, Novatskii, B.G., Stepanov, D.N., Roussel-Chomaz, Patricia, Mittig, Wolfgang, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., and Stuttge, Louise

Abstract

The spectrum of 10He was studied by means of the 3H(8He, p)10He reaction at a laboratory energy of 25 MeV/A and small center-of-mass angles. Missing mass spectrum of 10He was derived from the obtained p-8He coincidence. A resolution of 0.7 MeV was achieved in this spectrum for the measured 10He energy. Most likely, a well isolated group of 10 events detected between 2 and 5 MeV and showing a maximum at about 3 MeV in the spectrum of the present work exhibits the 10He g.s. resonance. © EDP Sciences and Springer 2008., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2008

14. Correlation studies of the H5 spectrum

Author

Golovkov, M.S., Grigorenko, Leonid, Fomichev, Andrey, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Itkis, Mikhail, Denikin, A. S., Bogatchev, A.A., Kondratiev, N.A., Kozulin, E.M., Korsheninnikov, A.A., Nikolskii, Yu, Roussel-Chomaz, Patricia, Mittig, Wolfgang, Palit, Rudrajyoti, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Angulo Perez, Carmen, Lapoux, Valerie, Raabe, Riccardo, Nalpas, L., Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Golovkov, M.S., Grigorenko, Leonid, Fomichev, Andrey, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Itkis, Mikhail, Denikin, A. S., Bogatchev, A.A., Kondratiev, N.A., Kozulin, E.M., Korsheninnikov, A.A., Nikolskii, Yu, Roussel-Chomaz, Patricia, Mittig, Wolfgang, Palit, Rudrajyoti, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Angulo Perez, Carmen, Lapoux, Valerie, Raabe, Riccardo, Nalpas, L., Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., and Zlatoustovskiy, S.V.

Abstract

The nuclear system H5 was studied using the H3(t,p)H5 transfer reaction at a laboratory energy of 57.7 MeV and small center of mass angles. The energy and angular correlations among the H5 decay fragments were obtained by complete kinematical reconstruction. A broad structure in the H5 missing mass spectrum above 2.5 MeV with a typical width of several MeV was identified as a mixture of 3/2+ and 5/2+ states. Analysis of interference patterns observed in the measured angular correlations disclosed the 1/2+ ground state of H5 concealed in the smooth missing mass spectrum. The deduced values for the resonance energy and width are Eg.s. 1.8 MeV and Γg.s. 1.3 MeV. The estimated cross sections for population of the ground state and the doublet of excited states at θc.m.=5°-10° are 150±50 μb/sr and 4.6±2 mb/sr, respectively. © 2005 The American Physical Society., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2005

15. New insights into the resonance states of 5H and 5He

Author

Ter-Akopian, Gurgen, Fomichev, Andrey, Golovkov, M.S., Grigorenko, Leonid, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Korsheninnikov, A.A., Nikolskii, Yu, Roussel-Chomaz, Patricia, Mittig, Wolfgang, Palit, Rudrajyoti, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Angulo Perez, Carmen, Lapoux, Valerie, Raabe, Riccardo, Nalpas, L., Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Ter-Akopian, Gurgen, Fomichev, Andrey, Golovkov, M.S., Grigorenko, Leonid, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Wolski, Roman, Korsheninnikov, A.A., Nikolskii, Yu, Roussel-Chomaz, Patricia, Mittig, Wolfgang, Palit, Rudrajyoti, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Angulo Perez, Carmen, Lapoux, Valerie, Raabe, Riccardo, Nalpas, L., Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., and Zlatoustovskiy, S.V.

Abstract

The 5H system was produced in the 3H(t, p) 5H reaction studied at small CM angles with a 58MeV tritium ion beam. High statistics data were used to reconstruct the energy and angular correlations between the 5H decay fragments. A broad structure in the 5H missing-mass spectrum showing up above 2.5MeV was identified as a mixture of the 3/2+ and 5/2+ states. The data also present an evidence that the 1/2+ ground state of 5H is located at about 2MeV. Then, the 5H and 5He systems were explored by means of transfer reactions occurring in the interactions of 132MeV 6He beam nuclei with deuterium. In the 2H( 6He, 3H) reaction a T = 3/2 isobaric analog state of 5H in 5He was observed at an excitation energy of 22.0±0.3MeV with a width of 2.5±0.3MeV. © Società Italiana di Fisica / Springer-Verlag 2005., SCOPUS: cp.j, info:eu-repo/semantics/published

Published
2005

16. Observation of excited states in5H

Author

Golovkov, M.S., Grigorenko, Leonid, Fomichev, Andrey, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Itkis, Mikhail, Bogatchev, A.A., Kondratiev, N.A., Kozulin, E.M., Korsheninnikov, A.A., Nikolskii, Yu, Roussel-Chomaz, Patricia, Mittig, Wolfgang, Palit, Rudrajyoti, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Angulo Perez, Carmen, Lapoux, Valerie, Raabe, Riccardo, Nalpas, L., Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., Zlatoustovskiy, S.V., Golovkov, M.S., Grigorenko, Leonid, Fomichev, Andrey, Krupko, S.A., Oganessian, Yu.Ts., Rodin, AM, Sidorchuk, S.I., Slepnev, R.S., Stepantsov, S.V., Ter-Akopian, Gurgen, Wolski, Roman, Itkis, Mikhail, Bogatchev, A.A., Kondratiev, N.A., Kozulin, E.M., Korsheninnikov, A.A., Nikolskii, Yu, Roussel-Chomaz, Patricia, Mittig, Wolfgang, Palit, Rudrajyoti, Bouchat, Virginie, Kinnard, V., Materna, Thomas, Hanappe, Francis, Dorvaux, O., Stuttge, Louise, Angulo Perez, Carmen, Lapoux, Valerie, Raabe, Riccardo, Nalpas, L., Yukhimchuk, Arkadiy, Perevozchikov, V.V., Vinogradov, Yu, Grishechkin, S.K., and Zlatoustovskiy, S.V.

Abstract

The excited states in the 5H system, which was produced in the 3H(t, p)5H reaction with a 58 MeV tritium beam at c.m. angles were investigated. The reconstruction of the energy and angular correlations between the 5H decay fragments was performed by using high statistics data. It was observed that a broad structure in the 5H missing mass spectrum above 2.5 MeV was identified as a mixture of the 3/2+ and 5/2+ states. The results show that the 3/2+ and 5/2+ states are either almost degenerate or the reaction mechanism causes a very specific interference of these states., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2004

17. Proton–proton correlations observed in two-proton radioactivity of 94Ag.

Author

Mukha, Ivan, Roeckl, Ernst, Batist, Leonid, Blazhev, Andrey, Döring, Joachim, Grawe, Hubert, Grigorenko, Leonid, Huyse, Mark, Janas, Zenon, Kirchner, Reinhard, La Commara, Marco, Mazzocchi, Chiara, Tabor, Sam L., and Van Duppen, Piet

Subjects
PROTON-proton interactions, NUCLEAR reactions, COLLISIONS (Nuclear physics), NUCLEAR energy, NUCLEAR physics, RADIOACTIVITY, RADIATION
Abstract

The stability and spontaneous decay of naturally occurring atomic nuclei have been much studied ever since Becquerel discovered natural radioactivity in 1896. In 1960, proton-rich nuclei with an odd or an even atomic number Z were predicted to decay through one- and two-proton radioactivity, respectively. The experimental observation of one-proton radioactivity was first reported in 1982, and two-proton radioactivity has now also been detected by experimentally studying the decay properties of 45Fe (refs 3, 4) and 54Zn (ref. 5). Here we report proton–proton correlations observed during the radioactive decay of a spinning long-lived state of the lightest known isotope of silver, 94Ag, which is known to undergo one-proton decay. We infer from these correlations that the long-lived state must also decay through simultaneous two-proton emission, making 94Ag the first nucleus to exhibit one- as well as two-proton radioactivity. We attribute the two-proton emission behaviour and the unexpectedly large probability for this decay mechanism to a very large deformation of the parent nucleus into a prolate (cigar-like) shape, which facilitates emission of protons either from the same or from opposite ends of the ‘cigar’. [ABSTRACT FROM AUTHOR]

Published
2006
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results