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Your search keyword '"Gladnishki, K. A."' showing total 10 results
Start Over Author "Gladnishki, K. A." Topic nuclear experiment
10 results on '"Gladnishki, K. A."'

1. A revised $B(E2; 2^+_1 \to 0^+_1)$ value in the semi-magic nucleus $^{210}$Po

Author

Kocheva, D., Rainovski, G., Jolie, J., Pietralla, N., Blazhev, A., Astier, A., Braunroth, Th., Cortés, M. L., Dewald, A., Djongolov, M., Fransen, C., Gladnishki, K., Hennig, A., Karayonchev, V., Keatings, J. M., Litzinger, J., Müller-Gatermann, C., Petkov, P., Scheck, M., Spagnoletti, P., Scholz, Ph., Stahl, C., Stegmann, R., Stoyanova, M., Thöle, P., Warr, N., Werner, V., Witt, W., Wölk, D., Zell, K. O., Van Isacker, P., and Ponomarev, V. Yu.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The lifetimes of the $2^+_1$, the $2^+_2$ and the $3^-_1$ states of $^{210}$Po have been measured in the $^{208}$Pb($^{12}$C,$^{10}$Be)$^{210}$Po transfer reaction by the Doppler-shift attenuation method. The results for the lifetime of the $2^+_1$ state is about three times shorter than the adopted value. However, the new value still does not allow for consistent description of the properties of the yrast $2^+_1$, $4^+_1$, $6^+_1$, and $8^+_1$ states of $^{210}$Po in the framework of nuclear shell models. The Quasi-particle Phonon Model (QPM) calculations also cannot overcome this problem thus indicating the existence of a peculiarity which is neglected in both theoretical approaches.

Published
2017
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2. Coulomb excitation of 73Ga

Author

Diriken, J., Stefanescu, I., Balabanski, D., Blasi, N., Blazhev, A., Bree, N., Cederkäll, J., Cocolios, T. E., Davinson, T., Eberth, J., Ekström, A., Fedorov, D. V., Fedosseev, V. N., Fraile, L. M., Franchoo, S., Georgiev, G., Gladnishki, K., Huyse, M., Ivanov, O. V., Ivanov, V. S., Iwanicki, J., Jolie, J., Konstantinopoulos, T., Kröll, Th., Krücken, R., Köster, U., Lagoyannis, A., Bianco, G. Lo, Maierbeck, P., Marsh, B. A., Napiorkowski, P., Patronis, N., Pauwels, D., Reiter, P., Seliverstov, M., Sletten, G., Van de Walle, J., Van Duppen, P., Voulot, D., Walters, W. B., Warr, N., Wenander, F., and Wrzosek, K.

Subjects
Nuclear Experiment
Abstract

The B(E2; Ii -> If) values for transitions in 71Ga and 73Ga were deduced from a Coulomb excitation experiment at the safe energy of 2.95 MeV/nucleon using post-accelerated beams of 71,73Ga at the REX-ISOLDE on-line isotope mass separator facility. The emitted gamma rays were detected by the MINIBALL-detector array and B(E2; Ii->If) values were obtained from the yields normalized to the known strength of the 2+ -> 0+ transition in the 120Sn target. The comparison of these new results with the data of less neutron-rich gallium isotopes shows a shift of the E2 collectivity towards lower excitation energy when adding neutrons beyond N = 40. This supports conclusions from previous studies of the gallium isotopes which indicated a structural change in this isotopical chain between N = 40 and N = 42. Combined with recent measurements from collinear laser spectroscopy showing a 1/2- spin and parity for the ground state, the extracted results revealed evidence for a 1/2-; 3/2- doublet near the ground state in 73 31Ga42 differing by at most 0.8 keV in energy.

Published
2010
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3. Coulomb excitation of $^{68}$Ni at safe energies

Author

Bree, N., Stefanescu, I., Butler, P. A., Cederkäll, J., Davinson, T., Delahaye, P., Eberth, J., Fedorov, D., Fedosseev, V. N., Fraile, L. M., Franchoo, S., Georgiev, G., Gladnishki, K., Huyse, M., Ivanov, O., Iwanicki, J., Jolie, J., Köster, U., Kröll, Th., Krücken, R., Marsh, B. A., Niedermaier, O., Reiter, P., Scheit, H., Schwalm, D., Sieber, T., Van de Walle, J., Van Duppen, P., Warr, N., Weisshaar, D., Wenander, F., and Zemlyanoy, S.

Subjects
Nuclear Experiment
Abstract

The $B(E2;0^+\to2^+)$ value in $^{68}$Ni has been measured using Coulomb excitation at safe energies. The $^{68}$Ni radioactive beam was post-accelerated at the ISOLDE facility (CERN) to 2.9 MeV/u. The emitted $\gamma$ rays were detected by the MINIBALL detector array. A kinematic particle reconstruction was performed in order to increase the measured c.m. angular range of the excitation cross section. The obtained value of 2.8$^{+1.2}_{-1.0}$ 10$^2$ e$^2$fm$^4$ is in good agreement with the value measured at intermediate energy Coulomb excitation, confirming the low $0^+\to2^+$ transition probability., Comment: 4 pages, 5 figures

Published
2008
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4. A revised B(E2; 2$^{+}_{1} \to 0^{+}_{1}$) value in the semi-magic nucleus $^{210}$Po

Author

Kocheva , D., Rainovski , G., Jolie , J., Pietralla , N., Blazhev , A., Astier , A., Altenkirch , R., Ansari , S., Braunroth , Th., Cortés , M.L., Dewald , A., Diel , F., Djongolov , M., Fransen , C., Gladnishki , K., Hennig , A., Karayonchev , V., Keatings , J.M., Kluge , E., Litzinger , J., Müller-Gatermann , C., Petkov , P., Rudigier , M., Scheck , M., Scholz , Ph., Spagnoletti , P., Spieker , M., Stahl , C., Stegmann , R., Stoyanova , M., Thöle , P., Warr , N., Werner , V., Zell , K.O., Van Isacker , P., Ponomarev , V.Yu., Wölk , D., Witt , W., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), 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), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Centre de Sciences Nucléaires et de Sciences de la Matière ( CSNSM ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Grand Accélérateur National d'Ions Lourds ( GANIL ), and 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 )

Subjects
Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 25.45.Hi, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 190 ≤ A ≤ 219, Random-phase approximations, 27.80.+w, Nuclear Theory (nucl-th), Electromagnetic transitions, Transfer reactions, 21.60.Jz, 21.10.Tg, 23.20.-g, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment, [ PHYS.NUCL ] Physics [physics]/Nuclear Theory [nucl-th]
Abstract

International audience; The lifetimes of the $ 2^+_1$ , the $ 2^+_2$ and the $ 3^-_1$ states of$^{210}$Po have been measured in the$^{208}$Pb($^{12}$C,$^{10}$Be)$^{210}$Po transfer reaction by the Doppler-shift attenuation method. The result for the lifetime of the $ 2^+_1$ state is about three times shorter than the adopted value. However, the new value still does not allow for a consistent description of the properties of the yrast $ 2^+_1$ , $ 4^+_1$ , $ 6^+_1$ , and $ 8^+_1$ states of$^{210}$Po in the framework of nuclear shell models. Quasi-particle Phonon Model (QPM) calculations also cannot overcome this problem thus indicating the existence of a peculiarity which is neglected in both theoretical approaches.

Published
2017
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5. Search for mixed-symmetry states of nuclei in the vicinity of the double-magic nucleus

Author

Kocheva, D., Stegmann, R., Rainovski, G., Jolie, J., Pietralla, N., Stahl, Clement, Petkov, P., Blazhev, A., Hennig, A., Bauer, C., Braunroth, Th., Cortes, L., Dewald, A., Djongolov, M., Fransen, C., Gladnishki, K., Karayonchev, V., Lettmann, M., Litzinger, J., Möller, Th., Müller-Gatermann, C., Scheck, M., Scholz, Ph., Schramm, C., Thöle, P., Werner, V., Wölk, D., Zhu, S., Van Isacker, P., Grand Accélérateur National d'Ions Lourds (GANIL), and 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)

Subjects
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

This is an Open Access article distributed under the terms of Creative Commons Attribution Licence 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.; International audience; In this work we present the results from two experiments dedicated to search for quadrupole-collective isovector valence-shell excitation, the states with so-called mixed proton-neutron symmetry (MSS), in nuclei around the doubly magic nucleus $^{208}$Pb. $^{212}$Po was studied in an α-transfer reaction. $^{204}$Hg was studied in an inverse kinematics Coulomb excitation reaction on a carbon target. Both experiments provide indications for existence of one-phonon MSSs. Those are the first experimentally identified MSSs in the mass A ≈ 208 region.

Published
2015
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6. Coulomb excitation of 68/28Ni40 at 'safe' energies

Author

Bree, Nick, Stefanescu, Irina, Butler, Peter A, Cederkall, Joakim, Davinson, T, Delahaye, Pierre, Eberth, J, Fedorov, Dima, Fedosseev, Valentin N, Fraile, Luis Mario, Franchoo, Serge, Georgiev, Georgi, Gladnishki, K, Huyse, Marc, Ivanov, Oleg, Koster, Ulli, Kroll, Thorsten, Krucken, Reiner, Marsh, Bruce A, Niedermaier, Oliver, Reiter, Pieter, Scheit, Heiko, Schwalm, D, Sieber, T, Van de Walle, Jarno, Van Duppen, Piet, Warr, N, Weisshaar, D, Wenander, Frederik, and Zemlyanoy, Sergei

Subjects
Nuclear Experiment
Abstract

The B(E2; 0+ → 2+) value in 68Ni has been measured using Coulomb excitation at safe energies. The 68Ni radioactive beam was post-accelerated at the CERN on-line isotope mass separator (ISOLDE) facility to 2.9 MeV/u and directed to a 108Pd target. The emitted γ rays were detected by the MINIBALL detector array. Not only directly registered but also indirectly deduced information on the nucleus emitting the γ ray was used to perform the Doppler correction, leading to a larger center-of-mass angular range to infer the excitation cross section. The obtained value of 2.8(+1.2/−1.0) 10^2 e^2 fm^4 is in good agreement with the value measured at intermediate energy Coulomb excitation, confirming the low 0+ → 2+ transition probability. 4 pages, 5 figures ispartof: Physical Review C, Nuclear physics vol:78 issue:4 pages:1-4 status: published

Published
2008

7. Coulomb excitation of $^{68}_{28}Ni_{40}$ at safe energies

Author

Bree, N, Stefanescu, I, Butler, P A, Cederkäll, J, Davinson, T, Delahaye, P, Eberth, J, Fedorov, D, Fedosseev, V, Fraile, L M, Franchoo, S, Georgiev, G, Gladnishki, K, Huyse, M, Ivanov, O, Iwanicki, J, Jolie, J, Köster, U, Kröll, T, Krücken, R, Marsh, B A, Niedermaier, O, Reiter, P, Scheit, H, Schwalm, D, Sieber, T, Vande Walle, J, Van Duppen, P, Warr, N, Weisshaar, D, Wenander, F, Zemlyanoy, S, Instituutvoor Kern-en Stralingsfysica, and Leuven, K U

Subjects
Physics::Accelerator Physics, Nuclear Physics - Experiment, Nuclear Experiment
Abstract

The $B(E2;0^+\to2^+)$ value in $^{68}$Ni has been measured using Coulomb excitation at safe energies. The $^{68}$Ni radioactive beam was post-accelerated at the ISOLDE facility (CERN) to 2.9 MeV/u. The emitted $\gamma$ rays were detected by the MINIBALL detector array. A kinematic particle reconstruction was performed in order to increase the measured c.m. angular range of the excitation cross section. The obtained value of 2.8$\pm$1.0 10$^2$ e$^2$fm$^4$ is in good agreement with the value measured at intermediate energy Coulomb excitation, confirming the low transition probability.

Published
2008

8. Coulomb excitation of 2868Ni40 at 'safe' energies

Author

Bree, N., Stefanescu, I., A. Butler, P., Cederkäll, J., Davinson, T., Delahaye, P., Eberth, J., Fedorov, D., N. Fedosseev, V., M. Fraile, L., Franchoo, S., Georgiev, G., Gladnishki, K., Huyse, M., Ivanov, O., Iwanicki, J., Jolie, J., Köster, U., Kröll, Th., Krücken, R., A. Marsh, B., Niedermaier, O., Reiter, P., Scheit, H., Schwalm, D., Sieber, T., Van De Walle, J., Van Duppen, P., Warr, N., Weisshaar, D., Wenander, F., Zemlyanoy, S., Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut Laue-Langevin (ILL), and ILL

Subjects
Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Nuclear Experiment
Abstract

The B(E2;0+-->2+) value in 68Ni has been measured using Coulomb excitation at safe energies. The 68Ni radioactive beam was postaccelerated at the CERN on-line isotope mass separator (ISOLDE) facility to 2.9 MeV/u and directed to a 108Pd target. The emitted gamma rays were detected by the MINIBALL detector array. Not only directly registered but also indirectly deduced information on the nucleus emitting the gamma ray was used to perform the Doppler correction, leading to a larger center-of-mass angular range to infer the excitation cross section. The obtained value of 2.8-1.0+1.2×102e2 fm4 is in good agreement with the value measured at intermediate energy Coulomb excitation, confirming the low 0+-->2+ transition probability.

Published
2008
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9. Angular Momentum Population in the Projectile Fragmentation of U-238 at 750 MeV/nucleon

Author

Gladnishki, K A, Podolyak, Z, Regan, P H, Gerl, J, Hellstrom, M, Kopatch, Y, Mandal, S, Gorska, M, Page, R D, Wollersheim, H J, Banu, A, Benzoni, G, Boardman, H, La Commara, M, Ekman, J, Fahlander, C, Geissel, H, Grawe, H, Kaza, E, Korgul, A, Matos, M, Mineva, M N, Pearson, C J, Plettner, C, Rudolph, D, Scheidenberger, C, Schmidt, K H, Shishkin, V, Sohler, D, Summerer, K, Valiente-Dobon, J J, Walker, P M, Weick, H, Winkler, M, and Yordanov, O

Subjects
Nuclear Theory, Physics::Atomic and Molecular Clusters, Nuclear Experiment
Abstract

A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.

Published
2004

10. g-Factor Measurements on Relativistic Isomeric Beams Produced by Fragmentation and U-fission: The g-RISING Project at GSI

Author

Neyens, G., Atanasova, L., Balabanski, D. L., Becker, F., Bednarczyk, P., Caceres, L., Doornenbal, P., Gerl, J., Gorska, M., Grebosz, J., Hass, M., Ilie, G., Kurz, N., Kojouharov, I., Lozeva, R., Maj, A., Pfutzner, M., Pietri, S., Zs. Podolyak, Prokopowicz, W., Saitoh, T. R., Schaffner, H., Simpson, G., Vermeulen, N., Werner-Malento, E., Walker, J., Wollersheim, H. J., Bazzacco, D., Benzoni, G., Blazhev, A., Blasi, N., Bracco, A., Brandau, C., Camera, F., Chamoli, S. K., Chmel, S., Crespi, F. C. L., Daugas, J. M., Rydt, M., Detistov, P., Claes Fahlander, Farnea, E., Georgiev, G., Gladnishki, K., Robert Hoischen, Ionescu-Bujor, M., Iordachescu, A., Jolie, J., Jungclaus, A., Kmiecik, M., Krasznahorkay, A., Kulessa, R., Lakshmi, S., Lo Bianco, G., Mallion, S., Mazurek, K., Meczynski, W., Montanari, D., Myalsky, S., Perru, O., Dirk Rudolph, Rusev, G., Saltarelli, A., Schwengner, R., Styczen, J., Turzo, K., Valiente-Dobon, J. J., Wieland, O., and Zieblinski, M.

Subjects
radioactive beams, Nuclear Theory, Nuclear structure, Nuclear Experiment, g-factor measurements
Abstract

Within the RISING (Rare ISotope INvestigations @ GSI) Collabora-tion at GSI, g factor measurements have been performed on isomeric states in neutron-rich isotopes approaching 132 Sn and in the neutron deficient Pb-region (the g-RISING campaign). We present the experimental technique and some typical aspects related to such studies on relativistic beams selected with the FRS fragment separator. First results are presented for the (19/2+ ) 4.5 µs isomeric state in 127 Sn, which has been produced by means of fission of a relativistic 238 U beam on the one hand, and by the fragmentation of a relativistic 136 Xe beam on the other hand. Spin-alignment has been observed in both reactions. It was the first time that spin-alignment has been established in a relativistic fission reaction.

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