Astrophysical<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>factors for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>9</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Be</mml:mi><mml:mo>(</mml:mo><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mo>,</m

Wulf, E.; Godwin, M. A.; Guillemette, J. F.; Laymon, C. M.; Prior, R. M.; Rice, Bryan J.; Spraker, M.; Weller, H. R.

doi:10.1103/physrevc.58.517

Cited by 14 publications

(13 citation statements)

References 7 publications

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“…Having made certain assumptions of common character about interactions in the p 9 Be channel of 10 B it is possible to describe well the existing experimental data of the astrophysical S-factor at the energy range down to 600 keV and to receive its value for zero (50 keV) energy which is in complete agreement with the latest experimental data. 28,104,105 The S(0)-factor at zero energy for the transition to the GS of 10 B is obtained generally good.…”

Section: B Reactionmentioning

confidence: 99%

“…Both of these values do not correspond to the well-known data. 78,103 That is why an additional analysis of the experimental results was carried out in later 104,105 and the values of 328-329 keV (l.s.) with the width of 155-161 keV were obtained for the energy of this level, which slightly differs from data of Refs.…”

Section: Potential Description Of Scattering Phase Shiftsmentioning

confidence: 99%

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Study of the nucleon radiative captures 8Li(n,γ)9Li, 9Be(p,γ)10B, 10Be(n,γ)11Be, 10B(p,γ)11C, and 16O(p,γ)17F at thermal and astrophysical energies

Dubovichenko

Dzhazairov-Kakhramanov

2017

Int. J. Mod. Phys. E

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Abstract:We have studied the neutron-capture reactions 8 Li(n,) 9 Li and its role in the primordial nucleosynthesis. The n+ 8 Li 9 Li+ reaction has a significant astrophysical interest, because it includes into one of the variants of chain of primordial nucleosynthesis processes of the Universe and thermonuclear reactions in type II supernovae. Furthermore, we consider the 9 Be(p,) 10 B reaction in the astrophysical energy range in the modified potential cluster model with splitting of orbital states according to Young tableaux and, in some cases, with forbidden states. The reaction 9 Be(p,) 10 B plays an important role in primordial and stellar nucleosynthesis of light elements in the p shell. Hydrogen burning in secondgeneration stars occurs via the proton-proton (pp) chain and CNO cycle, with the 9 Be(p,) 10 B reaction serving as an intermediate link between these cycles. Furthermore, the possibility of describing available experimental data for the total reaction cross sections of neutron radiative capture on 10 Be at thermal and astrophysical energies has been shown. This reaction is a part of one of the variants of the chain of primordial nucleosynthesis of the Universe due to which the elements with a mass of A > 11-12 may be formed. The results in the field of study of thermonuclear proton capture reaction on 10 B at ultralow, i.e., astrophysical energies will be presented further. The possibility of description of the experimental data for the astrophysical S-factor of the proton radiative capture on 16 O to the ground state of Keywords: Nuclear astrophysics; primordial nucleosynthesis; light atomic nuclei; low and astrophysical energies; radiative capture; total cross section; thermonuclear processes; potential cluster model; forbidden states. 21.60.Gx, 25.20.Lj, 25.40.Lw, 26.20.Np, 26.35.+c, 26.50.+x, 26.90.+n PACS Number(s): IntroductionThis review is the logical continuation of our works devoted to the radiative proton and neutron capture on light nuclei that were published in Int. J. Mod. Phys. E 21, 1250039 (2012); 22, 1350028 (2013); 22, 1350075 (2013); 23, 1430012 (2014). Astrophysical aspects of the reviewAs we know, light radioactive nuclei play an important role in many astrophysical environments. In addition, such parameter as cross section of the capture reactions as 2 a function of energy and reaction rates are very important for investigation of many astrophysical problems such as primordial nucleosynthesis of the Universe, main trends of stellar evolution, novae and super-novae explosions, X-ray bursts etc. The continued interest in the study of processes of radiative neutron capture on light nuclei at thermal (> 10 meV) and astrophysical (> 1 keV) energies is caused by several reasons. Firstly, this process plays a significant part in the study of many fundamental properties of nuclear reactions, and secondly, the data on the capture cross sections are widely used in a various applications of nuclear physics and nuclear astrophysics, for example, in the process of studying of...

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Section: B Reactionmentioning

confidence: 99%

Section: Potential Description Of Scattering Phase Shiftsmentioning

confidence: 99%

Study of the nucleon radiative captures 8Li(n,γ)9Li, 9Be(p,γ)10B, 10Be(n,γ)11Be, 10B(p,γ)11C, and 16O(p,γ)17F at thermal and astrophysical energies

Dubovichenko

Dzhazairov-Kakhramanov

2017

Int. J. Mod. Phys. E

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“…A prototype example for a nonequilibrium phenomenon in driven lattices is the celebrated 'ratchet effect' which is the appearance of directed particle motion in the absence of biased forces due to a breaking of certain spatiotemporal symmetries [11,12]. While the aforementioned setups focus on globally acting time periodic forces, it has been demonstrated recently how spatially varying ac-forces introduce a plethora of effects [13][14][15][16][17] such as the formation of density waves [16], the patterned deposition of particles [15] or the possibility for conversion processes between diffusive and ballistic motion [16,17]. Moreover, long-range interactions have been shown to lead to dynamical current reversals in the absence of any paramter change [18].…”

mentioning

confidence: 99%

“…(1) and (2) contains the uniformly driven lattice with V (n b ) ≡ V 0 for all n b by setting D = 0. As described in detail in [14,17] such a setup features a mixed phase space containing a 'chaotic sea' at low kinetic energies which is bounded by invariant curves and shows regular islands embedded in the chaotic sea. The stroboscopic Poincaré surfaces of section (PSS), where at times t = 2π ·n with n ∈ N velocity and position x modulus the barrier distance L are recorded, is shown in Fig.…”

mentioning

confidence: 99%

Disorder Induced Regular Dynamics in Oscillating Lattices

2014

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We explore the impact of weak disorder on the dynamics of classical particles in a periodically oscillating lattice. It is demonstrated that the disorder induces a hopping process from diffusive to regular motion i.e. we observe the counterintuitive phenomenon that disorder leads to regular behaviour. If the disorder is localized in a finite-sized part of the lattice, the described hopping causes initially diffusive particles to even accumulate in regular structures of the corresponding phase space. A hallmark of this accumulation is the emergence of pronounced peaks in the velocity distribution of particles which should be detectable in state of the art experiments e.g. with cold atoms in optical lattices. Introduction. -Time-driven nonequilibrium dynamics is a subject of major interest [1][2][3][4][5], covering many different physical systems such as colloidal particles exposed to periodically modulated ion chains [6], particles moving along a filament with a hydrodynamic coupling to the surrounding solvent [7] or cold polar atoms loaded into optical lattices that are driven by periodic phase modulations of the applied laser beam [8][9][10]. A prototype example for a nonequilibrium phenomenon in driven lattices is the celebrated 'ratchet effect' which is the appearance of directed particle motion in the absence of biased forces due to a breaking of certain spatiotemporal symmetries [11,12]. While the aforementioned setups focus on globally acting time periodic forces, it has been demonstrated recently how spatially varying ac-forces introduce a plethora of effects [13][14][15][16][17] such as the formation of density waves [16], the patterned deposition of particles [15] or the possibility for conversion processes between diffusive and ballistic motion [16,17]. Moreover, long-range interactions have been shown to lead to dynamical current reversals in the absence of any paramter change [18]. In this work we demonstrate how the combination of disorder and driving in a lattice can lead to the emergence of regular motion from an originally chaotic and diffusive ensemble of particles. Disorder-induced autocorrelations and pronounced changes of the velocity distributions are found with major differences occuring for the cases of global versus local disorder.

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“…Due to such a widespread applicability of ratchet based transport, unsurprisingly a vast body of literature has been devoted to control the strength and direction of the ratchet current. While the ratchet setups in one spatial dimensional (1D) address only forward or backward transport of particles [3,4,[26][27][28][29][30][31][32], two dimensional (2D) setups allow for transport at arbitrary angles. It has been shown that particles driven via external time periodic forces on a spatially periodic 2D lattice not only allows directed transport parallel to the drive but also at an angle relative to the driving law [33,34] or even completely orthogonal to it [35].…”

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confidence: 99%

Controlling transport of underdamped particles in two-dimensional driven Bravais lattices

Mukhopadhyay

Schmelcher

2020

Phys. Rev. Research

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We demonstrate the directed transport of underdamped particles in two dimensional lattices of arbitrary geometry driven by an unbiased ac-driving force. The direction of transport can be controlled via the lattice geometry as well as the strength and orientation of the oscillating drive. The breaking of the spatial inversion symmetry, which is necessary for the emergence of directed transport, is achieved solely due to the structure and geometry of the lattice. The most important criterion determining the transport direction is shown to be the ballistic attractors underlying the phase space of our weakly dissipative non-linear dynamical system. This allows the prediction of transport direction even for setups like driven oblique lattices where the standard symmetry arguments of transport control fail. Our results can be experimentally realized using holographic optical lattice based setups with colloids or cold atoms.

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AstrophysicalSfactors for the9Be(p→,

Cited by 14 publications

References 7 publications

Study of the nucleon radiative captures 8Li(n,γ)9Li, 9Be(p,γ)10B, 10Be(n,γ)11Be, 10B(p,γ)11C, and 16O(p,γ)17F at thermal and astrophysical energies

Study of the nucleon radiative captures 8Li(n,γ)9Li, 9Be(p,γ)10B, 10Be(n,γ)11Be, 10B(p,γ)11C, and 16O(p,γ)17F at thermal and astrophysical energies

Disorder Induced Regular Dynamics in Oscillating Lattices

Controlling transport of underdamped particles in two-dimensional driven Bravais lattices

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