<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>8</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>proton halo via reaction and breakup cross section measurements

Negoiţă, F.; Borcea, C.; Cârstoiu, F.; Lewitowicz, M.; Saint‐Laurent, M. G.; Anne, R.; Bazin, D.; Corre, J.M.; Roussel‐Chomaz, P.; Borrel, V.; Guillemaud‐Mueller, D.; Keller, H.; Mueller, A. C.; Pougheon, F.; Sorlin, O.; Lukyanov, S. M.; Penionzhkevich, Yu. É.; Фомичев, А. С.; Скобелев, Н. К.; Tarasov, O.; Dlouhý, Z.; Kordyasz, A.

doi:10.1103/physrevc.54.1787

Cited by 83 publications

(82 citation statements)

References 28 publications

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“…In the present paper, first we use the well studied case of 8 B breakup as a benchmark to demonstrate the usefulness of the method and show the possibilia e-mail: livius trache@tamu.edu ties of the Glauber reaction model used. We show that existing experimental data at energies between 30 and 1000 MeV/nucleon [6,7,8,9, 10] on a range of light and heavy targets translate into consistent values of the ANC, which is then used to determine the astrophysical factor S 17 (which gives the reaction rate for the 7 Be(p, γ) 8 B reaction of crucial importance for the solar neutrino question). We show that the precision of the method is limited to about 10% by our ability to compute absolute cross sections.…”

Section: Introductionmentioning

confidence: 87%

Breakup of loosely bound nuclei as indirect method in nuclear astrophysics: 8B, 9C, 23Al

et al. 2006

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Abstract. We discuss the use of one-nucleon breakup reactions of loosely bound nuclei at intermediate energies as an indirect method in nuclear astrophysics. These are peripheral processes, therefore we can extract asymptotic normalization coefficients (ANC) from which reaction rates of astrophysical interest can be inferred. To show the usefulness of the method, three different cases are discussed. In the first, existing experimental data for the breakup of 8 B at energies from 30 to 1000 MeV/u and of 9 C at 285 MeV/u on light through heavy targets are analyzed. Glauber model calculations in the eikonal approximation and in the optical limit using different effective interactions give consistent, though slightly different results, showing the limits of the precision of the method. The results lead to the astrophysical factor S17(0) = 18.7 ± 1.9 eV · b for the key reaction for solar neutrino production 7 Be(p, γ) 8 B. It is consistent with the values from other indirect methods and most direct measurements, but one. Breakup reactions can be measured with radioactive beams as weak as a few particles per second, and therefore can be used for cases where no direct measurements or other indirect methods for nuclear astrophysics can be applied. We discuss a proposed use of the breakup of the proton drip line nucleus 23 Al to obtain spectroscopic information and the stellar reaction rate for

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Section: Introductionmentioning

confidence: 87%

Breakup of loosely bound nuclei as indirect method in nuclear astrophysics: 8B, 9C, 23Al

et al. 2006

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“…Proton halos have been reliably identified for only two nuclei, 8 B [11,12] and 17 F [13][14][15]. In both cases, the state with a halo lies in a discrete spectrum.…”

Section: Introductionmentioning

confidence: 99%

The first identification of the proton halo in the excited state of 13N

Demyanova

Ogloblin

Danilov

et al. 2017

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We demonstrate that the radii of excited nuclear states can be estimated using the ( 3 He, t) charge-exchange reaction and relying on the modified diffraction model.The radius of the 13 N excited state with an excitation energy of E*=2.37 MeV,which lies in a continuous spectrum, is determined. The radius of this state proves to be close to that of the mirror 3.09-MeV state of the 13 C nucleus, which possesses a neutron halo but lies in a discrete spectrum. Thereby, we demonstrate that the 2.37-MeV state of the 13 N nucleus has a proton halo. The analysis is based on published measurements of differential cross sections for relevant reactions.

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“…Many neutron-halo nuclei are discovered, such as 6 He, 11 Li, 11 Be, 14 Be 17 B, 19 C and only three proton-halo nuclei are experimentally observed, namely 8 B, 12 N and 17 Ne [1,2]. A typical characteristic of halo structure is one or more valence nucleons surrounding a tightly bound core nucleus very extensively due to the loosely bound of the valence nucleons [3].…”

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confidence: 99%

“…It has attracted intense experimental and theoretical attentions because of the exotic structure and its astrophysical significance [4][5][6][7][8][9][10][11][12]. The enhanced total reaction cross sections have been measured and the theoretical analysis based on them indicates a quite significant extension of the last proton beyond that of the core, at least a weakly developed proton halo or skin due to the Coulomb and centrifugal potential [13][14][15][16][17]. A quite large quadruple moment was measured for 8 B in Ref.…”

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Direct Breakup Rections Of 8B At Fermi Energy

Wang¹,

Jin²,

Yang³

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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The longitudinal momentum distributions of the core-like fragment 7 Be from the breakup of 8 B on 12 C target have measured at the energy of 36MeV/u at the Radioactive Ion Beam Line in Lanzhou (RIBLL). In order to distinguish the stripping and diffraction mechanisms involving in breakup reaction of 8 B, both fragments of 7 Be and proton are measured coincidently. With this coincident measurement, the widths of longitudinal momentum distribution are deduced with the values of 124±17MeV and 92±7 MeV for stripping and diffraction mechanism respectively. It is found that the longitudinal momentum width of stripping component is larger than that of diffraction component, which is different from the breakup reaction at high energy as around GeV/u. The theoretical calculations are compared with these experimental results.

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B8proton halo via reaction and breakup cross section measurements

Cited by 83 publications

References 28 publications

Breakup of loosely bound nuclei as indirect method in nuclear astrophysics: 8B, 9C, 23Al

Breakup of loosely bound nuclei as indirect method in nuclear astrophysics: 8B, 9C, 23Al

The first identification of the proton halo in the excited state of 13N

Direct Breakup Rections Of 8B At Fermi Energy

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