Near-Barrier Fusion of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="bold">B</mml:mi><mml:mprescripts /><mml:none /><mml:mn>8</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Ni</mml:mi><mml:mprescripts /><mml:none /><mml:mn>58</mml:mn></mml:mmultiscripts></mml:math>Proton-Halo System

Aguilera, E. F.; Amador-Valenzuela, P.; Martinez‐Quiroz, E.; Lizcano, David; Rosales, Pedro; García-Martínez, H.; Gómez-Camacho, A.; Kolata, J. J.; Roberts, A.; Lamm, L. O.; Rogachev, G. V.; Guimarães, V.; Becchetti, F. D.; Villano, A. N.; Ojaruega, M.; Febbraro, M.; Chen, Y.; Jiang, Hao; DeYoung, Paul; Peaslee, Graham F.; Guess, C. J.; Khadka, Utsab; Brown, J.; Hinnefeld, J.; Acosta, L.; Rossi, E. S.; Huiza, J. F. P.; Belyaeva, T. L.

doi:10.1103/physrevlett.107.092701

Cited by 88 publications

(100 citation statements)

References 17 publications

(19 reference statements)

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“…The present experiment, using the same technique to get the respective fusion cross sections for the 3 He + 58 Ni system, served the additional purpose of determining the contribution of the 3 He contaminant beam to the proton yield in the above measurements (see Ref. [1]). It was for this purpose that the 3 He beam was generated as a secondary beam at the T winSol facility [12] at the University of Notre Dame (UND).…”

Section: Methodsmentioning

confidence: 99%

“…[1], the fusion excitation function for the 8 B + 58 Ni system was obtained by detecting the evaporation protons and using the proton multiplicity calculated with the code PACE [11] to deduce the fusion events. The beam was contaminated with 3 He and 7 Li, which could not be separated from 8 B by time-of-flight.…”

Section: Methodsmentioning

confidence: 99%

“…The respective behaviour for the 8 B + 58 Ni system possibly results from a static effect due to the extended size of the proton halo [1]. This would enhance the total reaction probability throughout the entire energy region, which in turn could favor fusion.…”

Section: Proton and Fusion Cross Sectionsmentioning

confidence: 99%

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Near-barrier fusion and total reaction of a proton-rich projectile:3He+58Ni

et al. 2013

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Evaporation protons from the fusion of the 3 He + 58 Ni system were measured at three energies near but above the Coulomb barrier. The respective elastic scattering angular distribution was also determined for one of these energies. The fusion data, after being properly reduced to eliminate size and charge effects, are compared to the recently-measured fusion excitation function for the proton-halo system 8 B + 58 Ni. As a reference, fusion data for the 16 O + 58 Ni system are also presented. With respect to this reference, the fusion cross sections for the proton-rich systems show an enhancement likely related to static effects. An excitation function for the respective total reaction cross section was extracted from the measured elastic data along with additional data from the literature. Surprisingly, this excitation function follows the trend expected for weakly-bound systems. 25.60.Dz, 25.60.Pj

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Near-barrier fusion and total reaction of a proton-rich projectile:3He+58Ni

et al. 2013

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“…The first measurements of this type were for the 8 B + 58 Ni system [1], for which fusion cross sections (σ f us ) were reported at ten energies in the near-and sub-barrier region. Later, similar data were published for 8 B + 28 Si [2] at four energies well above the respective Coulomb barrier.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [1], evaporation protons were measured and fusion cross sections were deduced using the evaporation code PACE2 [3]. The main advantage of this technique results from the fact that the compound nucleus, 66 As, is right at the proton-drip line so the corresponding proton multiplicity is high (M p ∼ 2.3).…”

Section: Introductionmentioning

confidence: 99%

Above-barrier fusion enhancement of proton-halo systems

et al. 2016

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Previously reported data for fusion of the 8 B + ( 58 Ni, 28 Si) systems are critically reviewed. New α particle data from the fusion of 8 B + 58 Ni also are reported, but the paper is mostly based on using realistic calculations of well established codes to reanalyze the previous data. The influence of breakup protons on the evaporation proton measurements for the heavier system is found to be small at all energies except for the lowest one measured, and corrections are made for this process. Possible model dependencies in the deduced fusion cross sections are investigated using three different evaporation codes. The data sets for the 58 Ni and 28 Si targets are shown to be consistent with each other and with fusion enhancement up to energies that are greater than the Coulomb barrier V b (E c.m. < ∼ V b + 1.5×hω). This limit corresponds to 6.2 MeV above the barrier for the 58 Ni target. An important difference with the behaviour of neutron-halo systems is thus confirmed.PACS numbers: 25.60. Pj ,

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