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Rogachev, G. V.; Goldberg, V. Z.; Lönnroth, T.; Trzaska, W. H.; Fayans, S.A.; Källman, K.-M.; Kolata, J. J.; Mutterer, M.; Rozhkov, Mikhail; Skorodumov, B. B.

doi:10.1103/physrevc.64.051302

Cited by 51 publications

(67 citation statements)

References 21 publications

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“…The radioactive beam loses energy traversing the target: the initial beam energy and target thickness are chosen in order to cover the centre-of-mass energies of interest. The method, widely applied in Louvain-la-Neuve and other RIB facilities [2,25,26,27,28], has been extended to study the ground and excited states of unbound nuclei, either directly or through their isobaric analogue states: for example 11 N [29] and 19 Na [30,31] in Louvain-la-Neuve, 7 He [32] at the TwinSol Facility of the Notre Dame University. In addition, using α particles as a target, the same method was applied to the investigation of the cluster structure of resonances in selected nuclei (section 4.2).…”

Section: Methodsmentioning

confidence: 99%

Radioactive ion beam physics at the cyclotron research centre Louvain-la-Neuve

Huyse¹,

Raabe²

2011

J. Phys. G: Nucl. Part. Phys.

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Abstract.The first beam of post-accelerated radioactive ions was realized in 1989 at the Louvainla-Neuve research facility. The method employed two coupled cyclotrons to produce, separate and re-accelerate the species of interest. Several technological challenges were solved in the process, to obtain pure and intense beams for use in nuclear physics research. Similarly, new techniques were developed and refined for the measurement of the nuclear reactions induced by the radioactive beams. The available energy range made the facility particularly suited for nuclear astrophysics studies, and important results were obtained in the determination of stellar reaction rates using beams of 7 Be, 13 N, 18 F, 18,19 Ne. A beam of 6 He ions was extensively used in studies of the nuclear structure (halos, molecular states) and dynamics (the reaction process at energies around the potential barrier).

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Section: Methodsmentioning

confidence: 99%

Radioactive ion beam physics at the cyclotron research centre Louvain-la-Neuve

Huyse¹,

Raabe²

2011

J. Phys. G: Nucl. Part. Phys.

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“…energy is also projected to a laboratory-energy interval that is wider, and largest at 0 • where it is four times wider. In addition, since the stopping power of protons is much smaller than that of the heavy incident ions, the elastic scattering excitation function may be measured over a wide range of energies with the use of a single fixed incident beam energy [20][21][22][23][24][25][26][27].…”

Section: Methodsmentioning

confidence: 99%

“…In the case of J π = 1/2 − , p and tot change to 58.0(160) and 58.0(180) keV, respectively. The S increases accordingly to 0.33 (23), which is also close to the S = 0.49 of the 1/2 − state in 37 S. Since the systematic trend is not reliable for the second l = 1 state, we just assign an l value for the parent state.…”

Section: Resonances Around E R = 5 Mevmentioning

confidence: 99%

Isobaric analog resonances of theN=21nucleus35Si

et al. 2012

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Neutron single-particle states in the neutron-rich nucleus 35 Si, which is located beside the N = 20 shell breaking nucleus 32 Mg, were investigated through their isobaric analog resonances. The excitation function for 34 Si+p elastic scattering was measured around 0 • in the laboratory frame by the thick target inverse kinematics method with a 34 Si beam around 5 MeV/nucleon and a thick polyethylene target. Eight resonances were successfully observed. Angular momenta and proton and total widths of the resonances were assigned using R-matrix analysis. With the help of information of the β decay study, six isobaric analog resonances were identified. Spectroscopic factors and spin-parities of the corresponding parent states in 35 Si are presented.

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“…To date, proton resonance elastic scattering using the TTIK method has been extensively used to study proton unbound states within a few MeV above the proton separation energies S p in light proton-rich nuclei [11][12][13][14][15][16]. This is in contrast to the study of the neutron singleparticle structure of neutron-rich nuclei, for which the TTIK method has been only applied to the unbound nucleus 9 He using the p( 8 He, p) reaction.…”

mentioning

confidence: 99%

Proton resonance elastic scattering in inverse kinematics on the medium heavy nucleus 68Zn

et al. 2010

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Abstract. An isobaric analog resonance of 69 Zn was studied by the resonance elastic scattering of p( 68 Zn, p) with a 5.5 MeV/nucleon 68 Zn beam and a thick polyethylene target. The excitation function of the differential cross-section of proton elastic scattering was measured around 0 degrees in the laboratory frame by the thick target inverse kinematics method. The angular momentum, and proton and total widths of the resonance assigned using an R-matrix calculation are in good agreement with earlier measurements performed using normal kinematics, demonstrating that the thick target inverse kinematics method is a useful tool for studying the single-particle structures of neutron-rich nuclei.Systematic studies of the neutron single-particle states in neutron-rich nuclei give direct evidence of shell evolution with increasing neutron richness, thereby providing a test of current nuclear-structure models. These states are also important for determining the cross-sections of neutron radiative capture reactions in r-process nucleosynthesis. The recent advent of radioactive ion beam (RIB) facilities provides opportunities for investigating the states of neutron-rich nuclei located far from the stability line by direct reactions.A straightforward way to study neutron single-particle states in neutron-rich nuclei is the one-nucleon transfer reaction, e.g., (d, p) reaction, in inverse kinematics [1][2][3]. The final states in these reactions are identified by measuring the proton energy. The spin-parities (J π ) and spectroscopic factors are extracted from the angular distributions of differential cross-sections around 0 degrees in the center-of-mass (c.m.) frame. 0 degrees in the c.m. frame corresponds to 180 degrees in the laboratory (lab.) frame, where the energies of protons are often too low to separate the neighboring states, particularly for heavy nuclei which have highly crowded level densities [3]. In order to measure the low-energy protons in wide angular range and to improve the reconstructed energy resolution in the c.m. frame, a large solid-angle silicon semiconductor detectors a e-mail: nobuaki.imai@kek.jp (SSDs) array with a high segmentation [4][5][6][7] is often employed.The same spectroscopic information can be obtained by investigating the isobaric analog resonances of the final states through measuring proton resonance elastic scattering at a few points of scattering angles. Under the assumption of isospin symmetry, the neutron single-particle configuration of states in a nucleus A+1 Z would be the same as the proton single-particle configuration of states at the high excitation energies in the neighboring nucleus A+1 (Z + 1), called isobaric analog states. When the analog state is above the proton separation energy, the state will be observed in the proton elastic scattering excitation function of a target nucleus A Z as a resonance, called the isobaric analog resonance (IAR). The resonance energy, width, and J π can be obtained from the excitation function by R-matrix analysis [8,9].For unstable n...

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Doubling of α-cluster statesin22Ne

Cited by 51 publications

References 21 publications

Radioactive ion beam physics at the cyclotron research centre Louvain-la-Neuve

Radioactive ion beam physics at the cyclotron research centre Louvain-la-Neuve

Isobaric analog resonances of theN=21nucleus35Si

Proton resonance elastic scattering in inverse kinematics on the medium heavy nucleus 68Zn

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