Article
Physics, Nuclear
L. D. Blokhintsev, A. S. Kadyrov, A. M. Mukhamedzhanov, D. A. Savin
Summary: In this paper, two methods are used to study the asymptotic normalization coefficients (ANC) of the O-16(0(+); 6.05 MeV) -> alpha +C-12(g.s.) reaction. The first method involves analytic continuation, where the α12C s-wave scattering amplitude obtained from the phase shift analysis of experimental data is analytically continued to the pole corresponding to the 16O bound state to determine the ANC C. The second method involves solving the Schrodinger equation using the two-body alpha C-12 potential, with parameters chosen to best describe the phase-shift analysis data at a specific experimental binding energy of 16O(0+; 6.05 MeV) in the alpha +C-12 channel, to determine the ANC C.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Nuclear
N. Michel, J. G. Li, L. H. Ru, W. Zuo
Summary: The F-16 nucleus, located at the proton drip line, exhibits prominent continuum coupling and narrow proton resonances in its low-lying spectrum. This makes it an excellent candidate for studying nuclear structure and reactions at the proton drip line. Using an effective Hamiltonian and the coupled-channels Gamow shell model framework, we successfully calculated the low-lying spectrum and scattering proton-proton cross section of F-16, accurately reproducing experimental data. Our calculations explicitly show isospin-symmetry breaking generated by the Coulomb interaction and continuum coupling, which explains the different ordering of low-lying states in F-16 and its mirror nucleus N-16.
Article
Physics, Nuclear
N. K. Timofeyuk
Summary: One-nucleon overlap functions, crucial for nucleon-removal reaction calculations, are efficiently modeled using the source term approach (STA) with minimal model spaces. Proper selection of the removed nucleon interaction can reproduce experimental spectroscopic factors (SFs) and predict isospin asymmetry reduction. Additionally, the role of higher-order induced forces, particularly the three-nucleon force, on source term calculations is studied to improve the description of overlap functions and reduce isospin asymmetry in SFs.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2021)
Article
Physics, Nuclear
Houda Naidja
Summary: This study reports an investigation of even-even nuclei near the Pb-208 closed core within the large-scale shell-model framework. Calculations of low-lying state energies and electromagnetic transitions of Pb, Po, Rn, Ra, and Th nuclei were performed using a new effective interaction H208 derived from CD-Bonn nucleon-nucleon potential. A particular focus was given to the degree of collectivity, revealing a transitional region from spherical nuclear shape to weakly collective behavior.
Article
Physics, Nuclear
L. D. Blokhintsev, A. S. Kadyrov, A. M. Mukhamedzhanov, D. A. Savin
Summary: This paper investigates the asymptotic normalization coefficients (ANC) for peripheral radiative capture reactions and considers the ANC for different bound excited states of O-16. The ANC is determined by analytically continuing alpha C-12 l-wave partial scattering amplitudes to the pole corresponding to the O-16 bound state. The scattering data is approximated by polynomials and extrapolated to the pole for a more reliable determination of the ANC.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Review
Oncology
Eugenia M. Yazlovitskaya, Todd R. Graham
Summary: Lipids are crucial for cellular functions and play a significant role in cancer development and progression. Type IV P-type ATPases, known as flippases, regulate membrane lipid asymmetry and are closely associated with cancer-related lipid changes. Recent studies have focused on the role of flippases, particularly P4-ATPases, in cancer and their potential as therapeutic targets.
Article
Chemistry, Multidisciplinary
Jiahuan Zheng, Yangdong Hu, Lianying Wu, Weitao Zhang
Summary: Accurate prediction of infinite dilution activity coefficient (gamma infinity) is crucial in molecular thermodynamics for phase equilibria, solubility, and related properties calculation. A new model based on the relationship between ( partial differential p/ partial differential x)T,x -> 0 and gamma infinity and temperature at low pressure was proposed. By introducing the idea of using the group contribution method, ( partial differential p/ partial differential x)T,x -> 0 was estimated and the activity coefficient of a solute at infinite dilution in water was obtained. Experimental data from 46 systems and over 450 data points confirmed the accuracy of this model, with a total average relative deviation of the predicted values from the experimental values for training data being 4.73%. The model showed satisfactory performance in predicting testing data and outperformed other models for aqueous systems.
Article
Physics, Nuclear
Nicholas D. Heller, Grigor H. Sargsyan, Kristina D. Launey, Calvin W. Johnson, Tomas Dytrych, Jerry P. Draayer
Summary: We provide insights into the backbending phenomenon within the symmetry-adapted framework for atomic nuclei, showing that the intrinsic deformation and intrinsic spin of the nucleus do not change around the backbend. We confirm the effectively near-spherical shape of 48Cr nucleus, but find that this shape is a result of a mixing of deformed prolate and deformed oblate shapes. Surprisingly, no anomalous increase in moment of inertia is observed.
Article
Physics, Nuclear
Cenxi Yuan, Menglan Liu, Noritaka Shimizu, Zs. Podolyak, Toshio Suzuki, Takaharu Otsuka, Zhong Liu
Summary: This study predicts the properties of nuclei in the region south of 208Pb using shell-model calculations, providing important information for future experimental and theoretical investigations.
Article
Physics, Multidisciplinary
Feng Pan, Yingwen He, Aoxue Li, Yingxin Wu, Dan Zhou, Jerry P. Draayer
Summary: An algebraic framework is introduced for detailed shell model calculations in a SU(3) basis, applied to various sets of ds-shell valence nucleons. The results show good fit of binding energies and correlation with experimental data, indicating a certain level of accuracy and relevance.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Mathematics
Hasan Sankari, Ahmad Abdo
Summary: This study focuses on the number of polynomial solutions of the Pell equation and Diophantine equation, along with their corresponding recurrence relations to derive formulas for the solutions.
JOURNAL OF MATHEMATICS
(2021)
Article
Mathematics
Hovik A. Matevossian, Maria V. Korovina, Vladimir A. Vestyak
Summary: The main goal of this article is to study the behavior of solutions of non-stationary problems at large timescales. The article focuses on obtaining an asymptotic expansion characterizing the behavior of the solution of a one-dimensional second-order hyperbolic equation with periodic coefficients at large values of the time parameter t. The methods used include the spectral theory of differential operators and the properties of the spectrum of the Hill operator with periodic coefficients in the positive operator case (H-0>0).
Article
Chemistry, Physical
Sahana Nagappa Moger, M. G. Mahesha
Summary: CdSxSe1-x (0 <= x <= 1) films were deposited on p-Si using thermal co-evaporation method with CdS and CdSe as source materials. The structural, spectroscopic and electrical behaviors of the heterostructures were studied, showing composition modulation and mixed phase in CdSSe, temperature-dependent Raman shifts, and high response in heterostructure with x = 0.2, demonstrating its suitability for devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Nuclear
Mark A. Caprio, Patrick J. Fasano, Pieter Maris, Anna E. McCoy
Summary: Electric quadrupole moments provide a measure of nuclear deformation and collective structure, with the need for both proton and neutron quadrupole moments to probe asymmetry. Ab initio calculations for quadrupole moments are challenging due to their sensitivity to wave function behavior, leading to a study of more robustly converged ratios. Comparing predicted ratios with experimental data confirms the predictive power of the ab initio description in understanding proton-neutron structure.
Article
Mathematics, Applied
Ahmed Abbassi, Mohamed Belhout
Summary: We study the asymptotic behavior of Lp extremal polynomials with respect to the measure alpha = Y + gamma for all p > 0. The measure alpha is a positive measure supported on the unit circle Gamma, with an additional denumerable set of mass points that accumulate at Gamma and satisfy Blaschke's condition. The measure Y = Ya + Ys, where Ys is the absolutely continuous part of the measure that satisfies Szego condition. Our main result is the explicit strong asymptotic formulas for the Lp extremal polynomials.
Article
Optics
N. K. Timofeyuk
Article
Physics, Multidisciplinary
G. W. Bailey, N. K. Timofeyuk, J. A. Tostevin
PHYSICAL REVIEW LETTERS
(2016)
Article
Physics, Multidisciplinary
N. K. Timofeyuk, D. Baye
Correction
Physics, Multidisciplinary
G. W. Bailey, N. K. Timofeyuk, J. A. Tostevin
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Nuclear
N. K. Timofeyuk
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2019)
Article
Physics, Nuclear
M. Gomez-Ramos, K. Timofeyuk
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2019)
Article
Astronomy & Astrophysics
T. A. Berry, Zs Podolyak, R. J. Carroll, R. Lica, H. Grawe, N. K. Timofeyuk, T. Alexander, A. N. Andreyev, S. Ansari, M. J. G. Borge, J. Creswell, C. Fahlander, L. M. Fraile, H. O. U. Fynbo, W. Gelletly, R-b Gerst, M. Gorska, A. Gredley, R. Greenlees, L. J. Harkness-Brennan, M. Huyse, S. M. Judge, D. S. Judson, J. Konki, J. Kurcewicz, I Kuti, S. Lalkovski, I Lazarus, M. Lund, M. Madurga, N. Marginean, R. Marginean, I Marroquin, C. Mihai, R. E. Mihai, E. Nacher, S. Nae, A. Negret, C. Nita, R. D. Page, S. Pascu, Z. Patel, A. Perea, V Pucknell, R. Rahkila, E. Rapisarda, P. H. Regan, F. Rotaru, C. M. Shand, E. C. Simpson, Ch Sotty, S. Stegemann, T. Stora, O. Tengblad, A. Turturicag, R. Van Duppen, V. Vedia, R. Wadsworth, P. M. Walker, N. Warr, F. Wearing, H. De Witte
Review
Physics, Nuclear
N. K. Timofeyuk, R. C. Johnson
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2020)
Proceedings Paper
Quantum Science & Technology
A. Kievsky, A. Polls, B. Julia-Diaz, N. Timofeyuk, M. Gattobigio
RECENT PROGRESS IN FEW-BODY PHYSICS
(2020)
Article
Physics, Nuclear
M. J. Dinmore, N. K. Timofeyuk, J. S. Al-Khalili, R. C. Johnson
Article
Physics, Nuclear
M. Gomez-Ramos, N. K. Timofeyuk
Article
Physics, Nuclear
N. K. Timofeyuk
Article
Optics
A. Kievsky, A. Polls, B. Julia-Diaz, N. K. Timofeyuk
Article
Physics, Nuclear
G. W. Bailey, N. K. Timofeyuk, J. A. Tostevin
Article
Physics, Nuclear
S. J. Waldecker, N. K. Timofeyuk
