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1. Halo structure of 8B determined from intermediate energy proton elastic scattering in inverse kinematics

Author

G.A. Korolev, A.V. Dobrovolsky, A.G. Inglessi, G.D. Alkhazov, P. Egelhof, A. Estradé, I. Dillmann, F. Farinon, H. Geissel, S. Ilieva, Y. Ke, A.V. Khanzadeev, O.A. Kiselev, J. Kurcewicz, X.C. Le, Yu.A. Litvinov, G.E. Petrov, A. Prochazka, C. Scheidenberger, L.O. Sergeev, H. Simon, M. Takechi, S. Tang, V. Volkov, A.A. Vorobyov, H. Weick, and V.I. Yatsoura

Subjects
Physics, QC1-999
Abstract

The absolute differential cross section for small-angle proton elastic scattering on the proton-rich 8B nucleus has been measured in inverse kinematics for the first time. The experiment was performed using a secondary radioactive beam with an energy of 0.7 GeV/u at GSI, Darmstadt. The active target, namely hydrogen-filled time projection ionization chamber IKAR, was used to measure the energy, angle and vertex point of the recoil protons. The scattering angle of the projectiles was simultaneously determined by the tracking detectors. The measured differential cross section is analyzed on the basis of the Glauber multiple scattering theory using phenomenological nuclear-density distributions with two free parameters. The radial density distribution deduced for 8B exhibits a halo structure with the root-mean-square (rms) matter radius Rm=2.58(6) fm and the rms halo radius Rh=4.24(25) fm. The results on 8B are compared to those on the mirror nucleus 8Li investigated earlier by the same method. A comparison is also made with previous experimental results and theoretical predictions for both nuclei. Keywords: 8B, Proton halo, Proton elastic scattering, Inverse kinematics

Published
2018
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2. Nuclear-matter distribution in the proton-rich nuclei 7Be and 8B from intermediate energy proton elastic scattering in inverse kinematics

Author

Alexei Khanzadeev, A. V. Dobrovolsky, G.A. Korolev, Yu. A. Litvinov, V. Volkov, Alfredo Estrade, P. Egelhof, J. Kurcewicz, G. E. Petrov, G. D. Alkhazov, Y. Ke, Herbert A. Simon, L.O. Sergeev, I. Dillmann, Hans Geissel, A. Prochazka, S. Tang, An.A. Vorobyov, S. Ilieva, F. Farinon, V. I. Yatsoura, O.A. Kiselev, Helmut Weick, X.C. Le, A.G. Inglessi, Gianluca Colò, C. Scheidenberger, and M. Takechi

Subjects
Elastic scattering, Physics, Nuclear and High Energy Physics, Nuclear Theory, Proton, 010308 nuclear & particles physics, Scattering, FOS: Physical sciences, Radius, Nuclear matter, 01 natural sciences, Nuclear Theory (nucl-th), Nuclear physics, Recoil, 0103 physical sciences, Halo, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Glauber
Abstract

Absolute differential cross sections for elastic $p^7$Be and $p^8$B small-angle scattering were measured in inverse kinematics at an energy of 0.7 GeV/u at GSI Darmstadt. The hydrogen-filled ionization chamber IKAR was used as an active target to detect the recoil protons. The projectile tracking and isotope identification were performed with multi-wire proportional chambers and scintillation detectors. The measured cross sections were analysed using the Glauber multiple-scattering theory. The root-mean-square (rms) nuclear matter radii $R_{\rm m} = 2.42 (4)$ fm for $^7$Be and $R_{\rm m} = 2.58 (6)$ fm for $^8$B were obtained. The radial density distribution deduced for $^8$B exhibits a proton halo structure with the rms halo radius $R_{\rm h} = 4.24 (25)$ fm. A comparison of the deduced experimental radii is displayed with existing experimental and theoretical data., 18 pages, 6 figures. arXiv admin note: text overlap with arXiv:1803.02044

Published
2019
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3. Halo structure of $^8$B determined from intermediate energy proton elastic scattering in inverse kinematics

Author

F. Farinon, S. Ilieva, Peter Egelhof, Alexei Khanzadeev, V. I. Yatsoura, J. Kurcewicz, An.A. Vorobyov, A. V. Dobrovolsky, I. Dillmann, C. Scheidenberger, Yu. A. Litvinov, M. Takechi, Alfredo Estrade, S. Tang, Y. Ke, G.A. Korolev, O.A. Kiselev, G. D. Alkhazov, G. E. Petrov, Herbert A. Simon, A. Prochazka, V. Volkov, Hans Geissel, L.O. Sergeev, Helmut Weick, X.C. Le, and A.G. Inglessi

Subjects
Nuclear and High Energy Physics, Proton, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, Nuclear physics, Nuclear Theory (nucl-th), Recoil, 0103 physical sciences, ddc:530, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Elastic scattering, Physics, 010308 nuclear & particles physics, Scattering, Radius, lcsh:QC1-999, Ionization chamber, Halo, Glauber, lcsh:Physics
Abstract

Physics letters / B 780, 200 - 204 (2018). doi:10.1016/j.physletb.2018.03.013, Published by North-Holland Publ., Amsterdam

Published
2018
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4. Nuclear-matter density distribution in the neutron-rich nuclei 12,14Be from proton elastic scattering in inverse kinematics

Author

D. M. Seliverstov, A. V. Dobrovolsky, Yu. A. Litvinov, V. I. Yatsoura, R. Kanungo, G. D. Alkhazov, Herbert A. Simon, S. Ilieva, An.A. Vorobyov, M. Górska, Hans Geissel, A.G. Inglessi, O.A. Kiselev, G.A. Korolev, A. V. Khanzadeev, X.C. Le, V.A. Volkov, C. Nociforo, F. Aksouh, A. A. Zhdanov, Helmut Weick, P. Egelhof, L.O. Sergeev, and L. V. Chulkov

Subjects
Nuclear reaction, Physics, Elastic scattering, Nuclear and High Energy Physics, Isotope, Proton, Nuclear Theory, Nuclear matter, Nuclear physics, Recoil, Neutron, Atomic physics, Nuclear Experiment, Glauber
Abstract

In the present work, the differential cross sections for small-angle proton elastic scattering on the 12,14 Be nuclei were measured in inverse kinematics, using secondary radioactive beams with energies near 700 MeV/u produced with the fragment separator FRS at GSI. The main part of the experimental setup was the active target IKAR, which was used simultaneously as a target and a detector for the recoil protons. Auxiliary detectors for projectile tracking and isotope identification completed the setup. The measured differential cross sections were analyzed using the Glauber multiple-scattering theory. For the evaluation of the data several phenomenological nuclear-matter density parametrizations and a sum of Gaussian parametrization were used. The nuclear-matter radii and radial density distributions of the isotopes 12,14 Be were deduced. Extended nuclear-matter density distributions were observed in both isotopes, and the halo structure of 14 Be was confirmed. The results were also compared with microscopic few-body and fermionic molecular dynamics model calculations concerning the structure of these neutron-rich nuclei.

Published
2012
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5. First feasibility study for EXL prototype detectors at the ESR and detector simulations

Author

S. Ilieva, T. Le Bleis, Yu. A. Litvinov, J. P. Meier, K. Beckert, F. Nolden, A. Chatillon, P. Beller, H. Emling, Helmut Weick, F. Aksouh, X.C. Le Xuang, K. Boretzky, U. Popp, M. Steck, O.A. Kiselev, A. Corsi, C. Kozhuharov, Herbert A. Simon, Stefanos Paschalis, K. Mahata, H. Moeini, A. Zalite, G. Ickert, Th. Stöhlker, Nasser Kalantar-Nayestanaki, D. Werthmüller, P. Egelhof, M. Shafiei, and KVI - Center for Advanced Radiation Technology

Subjects
Physics, Nuclear and High Energy Physics, medicine.medical_specialty, Nuclear engineering, Detector, medicine, General Physics and Astronomy, Medical physics, Beam (structure)
Abstract

This contribution presents some results from the first feasibility measurement performed at GSI using a 350 MeV/nucleon 136 Xe beam and a Hydrogen gas-jet target. In this feasibility study, one element of every possible detection part of the future EXL detection system was investigated. In addition, simulation results for EXL setup will be presented.

Published
2009

6. Contributors

Author

E. Abad, M. Ábalos, K. Alhooshani, I. Allan, J.R. Almirall, J.L. Anderson, M. Asensio-Ramos, Y. Assadi, T.G. Aw, F. Bamforth, B.B. Barnes, D.B. Barr, R. Barro, G. Bartolucci, C. Basheer, J.M. Bayona, R.J. Bell, C. Bellevicine, K. Bentayeb, R. Berendt, V. Besada, W.R. Betz, C. Bicchi, A. Bidari, W. Blaser, F. Bono-Blay, C. Branham, M. Brokł, J.L. Brown, B. Buckley, P.L. Buldini, B. Buszewski, M.J. Cabrita, Y. Cai, L. Calamai, K. Calder, E. Carrasco, C.E. Cass, R.N. Cavalcanti, Y. Chai, F. Chapuis-Hugon, F. Chemat, L. Chen, B. Chiofalo, K. Choi, R. Chrisman, I.K. Chu, D.S. Chung, A. Cifuentes, A. Cincinelli, H. Cingi, R.E. Clement, L. Comin, C. Condurso, L.S. Conte, L. Cook, C. Cordero, M. Cortina-Puig, R. Costa, A.M. Costa Freitas, D.B. Craig, M.D.R. Gomes da Silva, K. Dabbs, C. Dall'Asta, S. Damaraju, F. David, M. de la Guardia, J.R. Dean, N Degli Innocenti, B. Dever, G. Di Bella, S. Díez, C. Domeño, A. Driga, M.W. Ducey, P. Dugo, G. Dugo, M. Dziadas, E. Eljarrat, F.A. Esteve-Turrillas, A.S. Fabiano-Tixier, M.A. Farajzadeh, C. Fernández-Gómez, M. Filella, L. Fitzhenry, B.R. Fonslow, K.G. Furton, R. Gadzała-Kopciuch, G. Galaverna, R.M. García-Gimeno, C. Garcia-Jares, J. Geisel, M. Ghambarian, K. Y.-H. Gin, A. Gjelstad, S.G. Goh, K. Graham, C. Guitart, J.W. Guthrie, C. Hao, C. Harman, Y. He, M. He, M.-C. Hennion, J. Hernández-Borges, A.V. Herrera-Herrera, M. Herrero, H. Hintelmann, H. Holness, S. Hu, B. Hu, H. Huang, C.M. Hussain, E. Ibáñez, R. Ito, P. Jandera, H.H. Jeleń, J.-F. Jen, G. Jiang, K. Jinno, J.Å. Jönsson, H. Ju, A. Kabir, C. Kadilar, S.K. Kailasa, S. Kanimozhi, A. Kärrman, H. Kataoka, M. Kawaguchi, R.A. Ketola, J. Kim, J. Knulst, I. Koch, J.M. Kokosa, P. Konieczka, W. Konz, P.V. Kumar, S. Lacorte, M. Lai, S.P.D. Lalljie, M.P.Y. Lam, E. Lau, X.C. Le, M.M. Lean, H.K. Lee, K. Lew, L. Li, J. Li, Y. Li, G. Liang, E. Liberto, E. Lipiec, X. Liu, M. Llompart, H.L. Lord, M. Lu, B. Lü, P. Luna, C.E. Lunte, S.M. Lunte, M.D. Luque de Castro, J.R. Mackey, M. Majcher, A. Malik, P. Manesiotis, M. Marega, S. Marín, B.J. Marquardt, P.J. Marriott, A. Martín-Esteban, J.R. Martínez, I. Martínez-Castro, P. Martos, V. Matamoros, C.F. McGuigan, M.A.A. Meireles, Y. Meng, A. Mevoli, F. Michopoulos, K. Misuno, S. Mitra, L. Mondello, G. Moneti, S. Moret, F.M. Musteata, H. Nakazawa, J. Namieśnik, P. Nandi, C. Nerin, C. Nerín, T.E. Newsome, E.R. Nichols, A.A. Nuhu, M. Ogawa, S.V. Olesik, J. Parera, D.R. Parkinson, A. Pastor, K. Pawlak, J. Pawliszyn, S. Pedersen-Bjergaard, F. Pérez-Rodríguez, E.A. Pfannkoch, V. Pichon, Y. Picó, G. Pieraccini, D. Pingret, M. Plaza, C.F. Poole, S.K. Poole, P.A. Prada, V. Lo Presti, F. Priego-Capote, A.S. Ptolemy, G. Purcaro, S. Rafati, R.V. Rajotte, L. Ramos, R. Rando, K.E. Rasmussen, G.R. Rayat, D. Raynie, J.W. Readman, A.R. Regel, K. Reimer, B.E. Richter, K. Ridgway, S. Risticevic, M.Á. Rodríguez-Delgado, A. Rodriguez-Lafuente, M.P. Romero, C.F. Ross, P. Rubiolo, Y. Saito, M. Saitta, J. Salafranca, M.D.A. Saldaña, M.L. Sanz, B. Sellergren, F.J. Señoráns, J.L. Sericano, B. Sgorbini, S. Shen, Y. Shi, T.S. Shih, R.T. Short, B. Shurmer, L.M. Sidisky, M. Słomińska, R.M. Smith, N.H. Snow, C. Song, A.C. Soria, E.E. Stashenko, H. Steed, E.G. Stephanou, A.M. Stortini, J. Szpunar, M. Szultka, A. Takatsu, S.H. Te, F. Temelli, G. Theodoridis, K.V. Thomas, A. Tovar-Sánchez, G. Troncone, P.J. Tsai, S.N. Uang, I. Ueta, A. Valero, B. van Bavel, V. Varone, A. Verzera, F. Villanelli, L. Viñas, D. Vuckovic, G.S. Walker, S.M. Wang, W. Wang, H. Wang, N. Wang, Q. Wang, D.A. Wells, C.-W. Whang, I.D. Wilson, J.W. Wong, T.N. Wu, J. Wu, P. Wu, Hui-Fen Wu, Li Xu, L. Xu, Y. Yamini, X.P. Yan, L. Yang, J.R. Yates, M. Ye, X.B. Yin, H. Yuan, J.W. Zewe, W. Zhan, L. Zhang, Y. Zhang, Q. Zhang, M. Zhang, K. Zhang, Q. Zhao, J.L. Zhou, J.J. Zhu, H. Zou, and A. Zygler

Published
2012
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7. First feasibility experiment for the EXL project with prototype detectors at the ESR storage ring

Author

X.C. Le, G. Ickert, A. Chatillon, H. Moeini, H. Weick, N. Kalantar Nayestanaki, D. Werthmüller, P. Egelhof, J. Jourdan, J. P. Meier, D. Kiselev, K. Boretzky, Thomas Stöhlker, A. Zalite, F. Aksouh, Yuri A. Litvinov, C. Kozhuharov, O.A. Kiselev, M. Steck, Stefanos Paschalis, K. Mahata, U. Popp, A. Corsi, S. Ilieva, F. Nolden, T. Le Bleis, H. Simon, H. Emling, and KVI - Center for Advanced Radiation Technology

Subjects
Nuclear and High Energy Physics, Interaction profile, Elastic scattering cross-section, Luminosity, CROSS-SECTIONS, Nuclear physics, GSI, Intermediate energy, Glauber multiple scattering theory, SCATTERING, Instrumentation, Physics, Luminosity (scattering theory), Inverse kinematics, Detector, INTERMEDIATE-ENERGY, RESONANCE, Geometrical acceptance, NUCLEAR-MATTER DISTRIBUTIONS, Nucleon, Storage ring, Beam (structure), Low-momentum transfer, Radioactive beams
Abstract

The investigation of light-ion reactions with exotic beams in inverse kinematics gives access to a comprehensive range of nuclear structure information in the region far off stability. The future FAIR facility at CSI will provide new opportunities to extend and advance these investigations. The present paper will focus on the results of the first feasibility experiment for the EXL project in which we used a stored (136)Xe beam with E = 350 MeV/nucleon interacting with an internal hydrogen gas-jet target at the ESR storage ring of GSI. In this experiment we made use of at least one element of every detector part of the future experimental setup. Selected results from this measurement will be presented. (C) 2011 Elsevier B.V. All rights reserved.

Published
2011

8. RESULTS FOR THE FIRST FEASIBILITY STUDY FOR THE EXL PROJECT AT THE EXPERIMENTAL STORAGE RING AT GSI

Author

J. P. Meier, Herbert A. Simon, P. Beller, H. Moeini, S. Ilieva, D. Rohe, J. Jourdan, K. Beckert, F. Nolden, C. Kozhuharov, T. Le Bleis, F. Aksouh, M. Steck, A. Zalite, A. Chatillon, Nasser Kalantar-Nayestanaki, Stefanos Paschalis, G. Ickert, U. Popp, H. Emling, O. Kiselev, P. Egelhof, Thomas Stöhlker, K. Boretzky, K. Mahata, Helmut Weick, D. Werthmüller, A. Corsi, Y. Litvinov, and X.C. Le Xuang

Subjects
Physics, Nuclear engineering, Storage ring
Published
2008
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9. Feasibility studies of the EXL setup for FAIR using the GSI storage ring ESR

Author

J. P. Meier, P. Beller, X.C. Le, K. Beckert, T. Le Bleis, G. Ickert, C. Kozhuharov, Yu. A. Litvinov, P. Egelhof, Helmut Weick, A. Zalite, S. Ilieva, H. Simon, D. Werthmüller, K. Boretzky, Stefanos Paschalis, D. Rohe, J. Jourdan, A. Chatillon, K. Mahata, U. Popp, F. Nolden, F. Aksouh, H. Emling, M. Steck, Thomas Stöhlker, H. Moeini, O.A. Kiselev, and KVI - Center for Advanced Radiation Technology

Subjects
Nuclear physics, Physics, General Physics and Astronomy, General Materials Science, Physical and Theoretical Chemistry, Nuclear Experiment, Storage ring
Abstract

The investigation of light-ion induced direct reactions in inverse kinematics, using stored and cooled radioactive beams, interacting with internal H, He, etc. gas-jet targets, bears a large potential for nuclear structure and astrophysics studies on exotic nuclei. An extended research project EXL has been accepted for the future facility FAIR in Darmstadt, Germany. In order to explore the experimental conditions for measurements planned at FAIR, a first test experiment for proving the feasibility of the EXL concept was performed.

Published
2007
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