Zobrazeno 1 - 10 of 36 pro vyhledávání: '"H J, Wörtche"'
1
The pygmy quadrupole resonance and neutron-skin modes in 124 Sn
Autor: Mohsen Harakeh, Lucia Popescu, M. Spieker, Andreas Zilges, J. Endres, R-D Herzberg, Kerstin Sonnabend, Marcus Scheck, V. Stoica, Sotirios Harissopulos, N. Tsoneva, Deniz Savran, Norbert Pietralla, H. Lenske, F. Schlüter, H. J. Wörtche, V. Derya, A. Lagoyannis
Publikováno v: Physics Letters B: Nuclear Physics and Particle Physics
Physics Letters B
Physics Letters B, Vol 752, Iss C, Pp 102-107 (2016)
Physics Letters B, 752, 102-107. ELSEVIER SCIENCE BV
We present an extensive experimental study of the recently predicted pygmy quadrupole resonance (PQR) in Sn isotopes, where complementary probes were used. In this study, (alpha,alpha 'gamma) and (gamma,gamma ') experiments were performed on Sn-124.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d17b52dba0e96db65acacc674e25a4ed
https://doi.org/10.1016/j.physletb.2015.11.004
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2
Constant-gap spectrometer design for the electron/ion collider ELISe
Autor: Herbert A. Simon, Manoel Couder, M. Fujiwara, Mohsen Harakeh, Nasser Kalantar-Nayestanaki, I.A. Koop, T. Adachi, H. J. Wörtche, G. P. A. Berg
Publikováno v: Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment, 659(1), 198-206. ELSEVIER SCIENCE BV
For the study of electron-scattering off radioactive nuclei, the ELISe spectrometer will be constructed as a part of the Facility of Antiprotons and Ion Research (FAIR) in Darmstadt. A conceptional design of a spectrometer with a "clam-shell" gap was
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0415144e0e4e9d182f8ed0377de050c7
https://hdl.handle.net/11370/81f6f922-e243-4ae8-bda3-843f21e41fcc
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3
Study of the isospin character of 1-states using hadronic probes at intermediate energies
Autor: Andreas Zilges, V. Derya, M. Spieker, Mohsen Harakeh, Deniz Savran, H. J. Wörtche, J. Endres
Publikováno v: EPJ Web of Conferences, 93:01041. EDP Sciences
EPJ Web of Confernces
Fifteenth International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics
Fifteenth International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Aug 2014, Dresden, France. pp.01041, ⟨10.1051/epjconf/20159301041⟩
EPJ Web of Conferences, Vol 93, p 01041 (2015)
This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence 4.0; International audience; The complementary (γ, γ′) and (α, α′γ) reactions were used to study the isospin properties of low-lying E1 ex
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6759340df505bf84570810b0eb57918d
https://research.rug.nl/en/publications/92a0bce5-7110-47df-bae5-bdf3083a34dc
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4
Angle-averaged effective proton-carbon analyzing powers at intermediate energies
Autor: H. R. Amir-Ahmadi, M. Kis, M. Mahjour-Shafiei, J. G. Messchendorp, M. Hunyadi, Nasser Kalantar-Nayestanaki, A.M. van den Berg, H. J. Wörtche
Publikováno v: Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment, 562(1), 338-344. ELSEVIER SCIENCE BV
The angle-averaged effective analyzing powers, (A) over barc, for proton-carbon inclusive scattering were measured as a function of the kinetic energy of protons in a double scattering experiment. The measurements were performed in the kinetic energy
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::839da7b05c7d4067f54008c317fad450
https://research.rug.nl/en/publications/3da50c55-e176-4903-8ffa-6f2100cb3f37
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5
High resolution study of the Gamow-Teller strength distribution starting from the ground state of 14N in the beta- and beta+ directions
Autor: M. Yosoi, A. Korff, Y. Fujita, D. Frekers, Kunihiro Fujita, Atsushi Tamii, A. Negret, P. Haefner, T. Adachi, Kichiji Hatanaka, Yuji Shimizu, S. Rakers, H. J. Wörtche, E. Jacobs, P. von Brentano, C. Bäumer, M. Uchida, Yasuhiro Sakemi, Yuji Tameshige, M. Hunyadi, K. Nakanishi, E.-W. Grewe, A.M. van den Berg, L. Popescu, G. P. A. Berg, D. De Frenne, Y. Shimbara
Publikováno v: Journal of Physics. G: Nuclear and Particle Physics, 31(10):S1931, S1931-S1934. IOP PUBLISHING LTD
The two charge exchange reactions 14N(d, 2He)14C and 14N(3He, t)14O were studied with high resolution in order to identify the Gamow–Teller (GT) strength distribution starting from the ground state (g.s.) of 14N in the β− and β+ directions. The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b180be86fb42de24740936f64ea82c4b
https://hdl.handle.net/11370/6f7bc60b-009c-479a-b998-d0e505677be2
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6
Polarized proton scattering on 58Ni at small momentum transfer: A test of the microscopic optical model and effective interactions
Autor: S. Rakers, C. Bäumer, B. Reitz, Achim Richter, M.A. de Huu, M.N. Harakeh, D. Frekers, H. J. Wörtche, V. Yu. Ponomarev, A. Shevchenko, Jochen Wambach, Y. Kalmykov, P. von Neumann-Cosel, K. Schweda, F. Hofmann, Volker Hannen, A.M. van den Berg
Publikováno v: Physics Letters B, 612(3-4), 165-172. ELSEVIER SCIENCE BV
The reaction Ni-58((p) over right arrow, (p) over right arrow (/)) has been studied at small scattering angles and an incident beam energy of 172 MeV. We extract cross sections and analyzing powers for elastic scattering and transitions to vibrationa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4f80291070595c4da6eff9cdbd5d676
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7
Direct evidence for an orbital magnetic quadrupole twist mode in nuclei
Autor: H. J. Wörtche, Achim Richter, M. de Huu, A.M. van den Berg, D. Frekers, B. Reitz, P. von Neumann-Cosel, V. Yu. Ponomarev, Jochen Wambach, H. Lenske, Y. Kalmykov, G. Schrieder, S. Rakers, K. Schweda, F. Hofmann
Publikováno v: Physics Letters B, 532(3-4):PII S0370-2693(02)01485-5, 179-184. ELSEVIER SCIENCE BV
The reactions Ni-58(e, e') and M-58(p, p) have been studied at kinematics favorable for the excitation of J(pi) = 2(-) states by isovector spin-flip transitions with DeltaL = 1. There are states at an excitation energy E-X approximate to 10 MeV which
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cd176049202d56249b1d997ddc7027f
https://doi.org/10.1016/S0370-2693(02)01485-5
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8
Isospin properties of electric dipole excitations in 48 Ca
Autor: V. Yu. Ponomarev, Andreas Zilges, J. H. Kelley, Panagiota Papakonstantinou, H. J. Wörtche, Anton Tonchev, J. Endres, Mohsen Harakeh, Deniz Savran, V. Derya, Heiko Hergert, Norbert Pietralla, Gencho Rusev, Robert Roth, Werner Tornow
Publikováno v: Physics letters / B 730, 288-292 (2014). doi:10.1016/j.physletb.2014.01.050
Physics Letters B
Physics Letters B, 730, 288-292. ELSEVIER SCIENCE BV
Physics Letters B, 2014, 730, pp.288-292. ⟨10.1016/j.physletb.2014.01.050⟩
Two different experimental approaches were combined to study the electric dipole strength in the doubly-magic nucleus 48Ca below the neutron threshold. Real-photon scattering experiments using bremsstrahlung up to 9.9 MeV and nearly mono-energetic li
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c41bc7924f979298255a4a0217e91e68
http://www.openaccessrepository.it/record/5912
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9
Structure of the pygmy dipole resonance in124Sn
Autor: H. J. Wörtche, R. Krücken, Andreas Zilges, Norbert Pietralla, V. Yu. Ponomarev, R-D Herzberg, Mohsen Harakeh, Peter Ring, Lucia Popescu, P. A. Butler, Sotirios Harissopulos, V. Stoica, Kerstin Sonnabend, F. Schlüter, Elena Litvinova, J. Endres, A. Lagoyannis, Deniz Savran, Marcus Scheck
Publikováno v: Physical Review C. 85
Background: In atomic nuclei, a concentration of electric dipole strength around the particle threshold, commonly denoted as pygmy dipole resonance, may have a significant impact on nuclear structure properties and astrophysical scenarios. A clear id
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3475bd9ede254e7a000156051a12473
https://doi.org/10.1103/physrevc.85.064331
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10
High-precision28Si(p,t)26Si reaction to determine22Mg(α,p)25Al reaction rates
Autor: A.M. van den Berg, H. J. Wörtche, Katsumasa Fujita, P. J. LeBlanc, G. P. A. Berg, Y. Fujita, Michael Wiescher, Kichiji Hatanaka, Joachim Görres, Yuji Shimizu, T. Adachi, A. Matic, Mary Beard, R. Crowter, Tomotsugu Wakasa, Y. Shimbara, Yuji Tameshige, H. Fujita, Atsushi Tamii, Yasuhiro Sakemi, Hendrik Schatz, John P. Greene, S. O'Brien, M. Yosoi, M.N. Harakeh
Publikováno v: Physical Review C. 84
The rise time of stellar x-ray bursts is a signature of thermonuclear runaway processes in the atmosphere of neutron stars and is highly sensitive to a series of ($\ensuremath{\alpha}$,$p$) reactions via high-lying resonances in $sd$-shell nuclei. La
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::220730cc11c989f529ef0efcde8221af
https://doi.org/10.1103/physrevc.84.025801
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