Elastic Scattering in the N-N, C-N, and C-C Systems

Smith, Andrew M.; Steigert, F. E.

doi:10.1103/physrev.125.988

Cited by 16 publications

(15 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…43 The angular distribution of the 9.63-MeV (/ r =3-) level, expected to be in phase with the elastic scattering is quite structureless, in agreement with previous measurements. 41 The shape of the angular distributions for the elastic scattering is in reasonable agreement with an earlier measurement, 38 although the ranges of angles studied do not overlap appreciably.…”

Section: Elastic and Inelastic Scattering In The N 14 -C 12 Systemsupporting

confidence: 77%

“…[38][39][40] The second point is especially important in the context of this paper: since all data were obtained simultaneously, the presence of oscillations in the elastic and inelastic scattering distributions lends credence to the smooth angular distributions observed for the transfer reactions.…”

Section: Elastic and Inelastic Scattering In The N 14 -C 12 Systemmentioning

confidence: 99%

See 1 more Smart Citation

Mechanism of Nucleon Transfer Reactions Induced by 148-MeVN14Ions

1967

View full text Add to dashboard Cite

Neutron and proton transfer reactions have been studied in the C 12 +N 14 system using a 148-MeV N 14 beam and an isotopic identification system capable of resolving isolated residual states. Highly selective population of states having a simple one-nucleon configuration based on the N 14 ground state has been observed in the C 12 (N 14 ,0 1B )B n and C 12 (N 14 ,N 15 )C n analog reactions. The ratio of cross sections for these reactions is well reproduced on the assumption of charge symmetry. Calculations based on the Boyarkina and on the Kurath wave functions are in agreement with the observed relative population of the ground and first excited states of the A = 11 mirror pair. None of the transfer angular distributions show diffraction oscillations, contrary to the predictions of the Frahn and Venter model. Both the Dar and the Dodd and Greider models can reproduce experimental results; however, the evidence now available on heavy-ion transfer reactions favors the finite range potential and recoil mechanism of the latter model.

show abstract

Section: Elastic and Inelastic Scattering In The N 14 -C 12 Systemsupporting

confidence: 77%

Section: Elastic and Inelastic Scattering In The N 14 -C 12 Systemmentioning

confidence: 99%

Mechanism of Nucleon Transfer Reactions Induced by 148-MeVN14Ions

1967

View full text Add to dashboard Cite

show abstract

“…A recent step in this direction is a study of two-step crystal nucleation in a phase separating liquid that has been addressed within a combination of a binary version of XPFC model with diffusive dynamics [229]. Precipitation from the solution happens here via crystal nucleation in the solute-rich droplets, which formed during liquid phase separation (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…and can address nucleation on the molecular scale, their application to real materials remains limited. Recent activities aimed at making the PFC models quantitative for single-and multicomponent systems [187,190,[226][227][228][229]236] open up the road to addressing nucleation under close to realistic conditions. An attractive feature of these models is that being molecular scale approaches they connect structure and the physical properties.…”

Section: Summary and Future Directionsmentioning

confidence: 99%

Phase-field modeling of crystal nucleation in undercooled liquids – A review

Gránásy

Tóth

Warren

et al. 2019

Progress in Materials Science

View full text Add to dashboard Cite

We review how phase-field models contributed to the understanding of various aspects of crystal nucleation including homogeneous and heterogeneous processes, and their role in microstructure evolution. We recall results obtained both by the conventional phase-field approaches that rely on spatially averaged (coarse grained) order parameters in capturing freezing, and by the recently developed phase-field crystal models that work on the molecular scale, while employing time averaged particle densities, and are regarded as simple dynamical density functional theories of classical particles. Besides simpler cases of homogeneous and heterogeneous nucleation, phenomena addressed by these techniques include precursor assisted nucleation, nucleation in eutectic and phase separating systems, phase selection via competing nucleation processes, growth front nucleation (a process, in which grains of new orientations form at the solidification front) yielding crystal sheaves and spherulites, and transition between the growth controlled cellular and the nucleation dominated equiaxial solidification morphologies. * granasy.laszlo@wigner.mta.hu arXiv:1907.05732v1 [cond-mat.mtrl-sci] 12 Jul 2019 D. Discussion: Nucleation in coarse grained PF models 32 IV. Molecular scale phase-field models of crystallization 34 A. The Phase-Field Crystal approach 34 1. The single-mode PFC model 34 2. The two-mode PFC model 35 3. The multi-mode PFC model 36 4. Other advanced PFC models 36 B. Application of the PFC models to crystal nucleation 37 1. Euler-Lagrange equation and other methods to find free energy extrema 37 2. PFC with diffusive dynamics (DPFC) 39 3. Hydrodynamic PFC model of freezing (HPFC) 46 4. Numerical methods 49 C.

show abstract

“…The main feature which is visible during the evolution are Kelvin waves. Kelvin waves consist of helical displacements of the vortex core axis, and play an important role in quantum turbulence [12]; they have been recently experimentally identified in superfluid helium [46] and their presence has been recognized in atomic condensates [47,48]. Considering Fig.…”

Section: Decay Of Single Quadruply-charged Vortexmentioning

confidence: 99%

Vinen turbulence via the decay of multicharged vortices in trapped atomic Bose-Einstein condensates

et al. 2017

View full text Add to dashboard Cite

We investigate a procedure to generate turbulence in a trapped Bose-Einstein condensate which takes advantage of the decay of multicharged vortices. We show that the resulting singly-charged vortices twist around each other, intertwined in the shape of helical Kelvin waves, which collide and undergo vortex reconnections, creating a disordered vortex state. By examining the velocity statistics, the energy spectrum, the correlation functions and the temporal decay, and comparing these properties with the properties of ordinary turbulence and observations in superfluid helium, we conclude that this disordered vortex state can be identified with the 'Vinen' regime of turbulence which has been discovered in the context of superfluid helium. arXiv:1704.06759v1 [cond-mat.quant-gas]

show abstract

Elastic Scattering in the N-N, C-N, and C-C Systems

Cited by 16 publications

References 10 publications

Mechanism of Nucleon Transfer Reactions Induced by 148-MeVN14Ions

Mechanism of Nucleon Transfer Reactions Induced by 148-MeVN14Ions

Phase-field modeling of crystal nucleation in undercooled liquids – A review

Vinen turbulence via the decay of multicharged vortices in trapped atomic Bose-Einstein condensates

Contact Info

Product

Resources

About