Results 31 to 40 of about 210,580 (265)

Recent shell-model investigation and its possible role in nuclear structure data study [PDF]

open access: yesEPJ Web of Conferences, 2020
Up to now, the nuclear shell model is rarely used in the nuclear data study because of several reasons. First, medium and heavy mass nuclei far from the shell-model cores, normally doubly magic nuclei, require a huge amount of calculation resource even ...
Yuan Cenxi   +4 more
doaj   +1 more source

Microscopic Shell Model Calculations for sd-Shell Nuclei [PDF]

open access: yesProceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017
Several techniques now exist for performing detailed and accurate calculations of the structure of light nuclei, i.e., A ≤ 16. Going to heavier nuclei requires new techniques or extensions of old ones. One of these is the so-called No Core Shell Model (NCSM) with a Core approach, which involves an Okubo-Lee-Suzuki (OLS) transformation of a converged ...
Barrett, Bruce R.   +5 more
openaire   +2 more sources

Jacobi no-core shell model for p-shell hypernuclei [PDF]

open access: yesThe European Physical Journal A, 2020
AbstractWe extend the recently developed Jacobi no-core shell model to hypernuclei. Based on the coefficients of fractional parentage for ordinary nuclei, we define a basis where the hyperon is the spectator particle. We then formulate transition coefficients to states that single out a hyperon–nucleon pair which allow us to implement a hypernuclear ...
Le, Hoai   +3 more
openaire   +3 more sources

Shell-model and first-principles calculations of vibrational, structural and ferroelectric properties of KH_2PO_4

open access: yesCondensed Matter Physics, 2022
We develop a shell model (SM) for potassium dihydrogen phosphate (KDP) which is fitted to ab initio (AI) results that include nonlocal van der Waals corrections.
R. E. Menchón   +3 more
doaj   +1 more source

On the modeling of shells in multibody dynamics [PDF]

open access: yesVolume 6A: 18th Biennial Conference on Mechanical Vibration and Noise, 2001
Abstract Energy preserving/decaying schemes are presented for the simulation of the nonlinear multibody systems involving shell components. The proposed schemes are designed to meet four specific requirements: unconditional nonlinear stability of the scheme, a rigorous treatment of both geometric and material non-linearities, exact ...
BAUCHAU, OLIVIER, BOTTASSO, CARLO LUIGI
openaire   +5 more sources

Energy levels of nuclei 40Sc and 40K as a function of semi-classical coupling angle θ1,2 within the modified surface delta-interaction

open access: yesЯдерна фізика та енергетика, 2019
In this work, nuclear shell model was applied using modified surface delta-interaction to calculate, in particle-hole state, the energy levels of isobar nuclei 40Sc and 40K.
Dalal Naji Hameed, Ali Khalaf Hasan
doaj   +1 more source

Hypernuclear no-core shell model [PDF]

open access: yesPhysical Review C, 2018
We extend the No-Core Shell Model (NCSM) methodology to incorporate strangeness degrees of freedom and apply it to single-$Λ$ hypernuclei. After discussing the transformation of the hyperon-nucleon (YN) interaction into Harmonic-Oscillator (HO) basis and the Similarity Renormalization Group transformation applied to it to improve model-space ...
Wirth, Roland   +3 more
openaire   +2 more sources

Calculating Energy Levels of 48Cr using Skyrme (SLY5) Interactions [PDF]

open access: yesمجلة التربية والعلم
In this paper, we obtained the nuclear energy levels for 48Cr isotope that resided in the pf -shell of shell model calculations. For nucleons that were outside closed and no core, they were calculated using skyrme interactions. The Skyrme (SLY5) was used
Sarah Darweesh, Firas Mageed
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Theoretical WIMP–Nucleus Scattering Rates for Isomeric Nuclei

open access: yesParticles
The direct detection of dark matter constituents, particularly weakly interacting massive particles (WIMPs), is central to particle physics and cosmology.
John D. Vergados, Dennis Bonatsos
doaj   +1 more source

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