Article
Physics, Nuclear
M. A. G. Alvarez, M. Rodriguez-Gallardo, J. P. Fernandez-Garcia, J. Casal, J. A. Lay
Summary: The study presents systematic optical model and continuum discretized coupled channel calculations for elastic scattering of exotic and stable nuclei projectiles on heavy targets, showing that the predictions from OM and CDCC corroborate each other and account for important differences in the nuclei reaction mechanisms.
Article
Physics, Multidisciplinary
Paul-Gerhard Reinhard, Xavier Roca-Maza, Witold Nazarewicz
Summary: The study focused on the parity-violating asymmetry A(PV) in Pb-208 using modern relativistic and nonrelativistic energy density functionals. By optimizing new functionals, predictions were made for the neutron skin thickness and symmetry-energy slope in Pb-208. The results were consistent with astrophysical data and differed from those obtained using a specific set of relativistic functionals.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
R. Sparta, A. Di Pietro, P. Figuera, O. Tengblad, A. M. Moro, I. Martel, J. P. Fernandez-Garcia, Jin Lei, L. Acosta, M. J. G. Borge, G. Bruni, J. Cederkall, T. Davinson, J. D. Ovejas, L. M. Fraile, D. Galaviz, J. Halkjaer Jensen, B. Jonson, M. La Cognata, A. Perea, A. M. Sanchez-Benitez, N. Soic, S. Vinals
Summary: The proton halo effects in the B-8+Zn-64 reaction at an energy around 1.5 times the Coulomb barrier were studied. The results show that the collision dynamics of B-8 at the barrier is very different from neutron halo nuclei, with only modest effects of coupling to continuum.
Article
Physics, Multidisciplinary
Marjan Ashouri, Mahdi Hajivaliei, Nasim Gholami, Ahmad Ebadi
Summary: Studying the interaction between electrons and biological molecules has become increasingly important in recent years in the field of cancer therapy. This paper reports the physical interaction between electrons and the anti-cancer drug Hexamethine for the first time, and investigates the near approach binding of the drug with DNA using molecular dynamic simulations. The electron scattering cross sections on the system of DNA bases along with Hexamethine from the simulations were studied.
Article
Astronomy & Astrophysics
P. Sarriguren
Summary: Elastic electron scattering from oriented odd -A axially deformed nuclei is studied in the plane-wave Born approximation. The interference form factors between monopole and quadrupole Coulomb terms that characterize the nuclear response with aligned nuclear targets are shown to increase or decrease the unpolarized cross-section, depending on the sign of the quadrupole deformation. This feature provides valuable information on the nuclear deformation that can be used as a signature of the oblate or prolate character of the nuclear shape. Some selected cases of nuclei with different spins are presented that exemplify the scope of the method.
Article
Physics, Nuclear
R. Lichtenthaler, O. C. B. Santos, A. Serra, U. Umbelino, K. C. C. Pires, J. R. B. Oliveira, A. Lepine-Szily, P. N. de Faria, V. Morcelle
Summary: The research team at the Radioactive Ion Beams facility in Brasil conducted experiments with secondary radioactive beams He-6, Be-7, Li-8 and B-8, focusing on elastic scattering, reaction measurements, and a preliminary Coulomb excitation experiment.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Nuclear Science & Technology
Wei Nan, Bing Guo, Cheng-Jian Lin, Lei Yang, Dong-Xi Wang, Yang-Ping Shen, Bing Tang, Bao-Qun Cui, Tao Ge, Yin-Long Lyu, Hui-Ming Jia, Yun-Ju Li, Chen Chen, Li-Hua Chen, Qi-Wen Fan, Xin-Yue Li, Gang Lian, Jian-Cheng Liu, Tian-Peng Luo, Nan-Ru Ma, Rui-Gang Ma, Xie Ma, Ying-Jun Ma, Wei-Ke Nan, Dan-Yang Pang, You-Bao Wang, Pei-Wei Wen, Feng Yang, Yong-Jin Yao, Sheng Zeng, Hao Zhang, Fu-Peng Zhong, Shan-Hao Zhong, Zhi-Hong Li, Tian-Jue Zhang, Wei-Ping Liu
Summary: The reaction dynamics of exotic nuclei near the drip line is a research topic of interest, with elastic scattering being a useful probe for investigating size and surface diffuseness. This study presents the first experiment using a post-accelerated ISOL beam at the Beijing Radioactive Ion Beam Facility, showing good agreement with measurements using non-ISOL beam, and providing useful background for utilizing BRIF as a powerful tool for investigating the reaction dynamics of exotic nuclei.
NUCLEAR SCIENCE AND TECHNIQUES
(2021)
Article
Physics, Multidisciplinary
M. N. El-Hammamy, N. A. El-Nohy, M. El-Azab Farid, S. Diab, Moamen M. El-Sayed
Summary: The elastic scattering of F-17 and O-17 with Pb-208 at 90.4 and 78 MeV energies was analyzed using the double folding approach. The study focused on the structure and properties of F-17 and O-17 nuclei through the analysis of their interactions with Pb-208.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Physics, Nuclear
Jeremy Hartse, Alessandro Roggero
Summary: In this study, we reformulate the recently proposed Gaussian Integral Transform technique in terms of Fourier moments of the system Hamiltonian, enabling efficient computation of spectral density on a quantum computer, which has important implications in accurately predicting inclusive scattering cross sections in the linear response regime.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Materials Science, Multidisciplinary
M. Mousumi Khatun, M. M. Haque, M. Atiqur R. Patoary, M. Shorifuddoza, Mahmudul H. Khandker, A. K. Fazlul Haque, Hiroshi Watabe, M. Alfaz Uddin
Summary: Differential, integral, momentum-transfer, viscosity, inelastic and total cross sections, as well as spin asymmetries, are calculated for electron and positron scattering from the gold atom with nuclear spin 3/2. The calculations are based on two theoretical approaches for different energy domains and compared with experimental data, showing reasonable agreements.
RESULTS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
D. Adhikari, H. Albataineh, D. Androic, K. Aniol, D. S. Armstrong, T. Averett, C. Ayerbe Gayoso, S. Barcus, V. Bellini, R. S. Beminiwattha, J. F. Benesch, H. Bhatt, D. Bhatta Pathak, D. Bhetuwal, B. Blaikie, J. Boyd, Q. Campagna, A. Camsonne, G. D. Cates, Y. Chen, C. Clarke, J. C. Cornejo, S. Covrig Dusa, M. M. Dalton, P. Datta, A. Deshpande, D. Dutta, C. Feldman, E. Fuchey, C. Gal, D. Gaskell, T. Gautam, M. Gericke, C. Ghosh, I. Halilovic, J. -O. Hansen, F. Hauenstein, W. Henry, C. J. Horowitz, C. Jantzi, S. Jian, S. Johnston, D. C. Jones, B. Karki, S. Kakkar, S. Katugampola, C. E. Keppel, P. M. King, D. E. King, M. Knauss, K. S. Kumar, T. Kutz, N. Lashley-Colthirst, G. Leverick, H. Liu, N. Liyange, S. Malace, J. Mammei, R. Mammei, M. McCaughan, D. McNulty, D. Meekins, C. Metts, R. Michaels, M. Mihovilovic, M. M. Mondal, J. Napolitano, D. Nikolaev, M. N. H. Rashad, V. Owen, C. Palatchi, J. Pan, B. Pandey, S. Park, K. D. Paschke, M. Petrusky, M. L. Pitt, S. Premathilake, A. J. R. Puckett, B. Quinn, R. Radloff, S. Rahman, A. Rathnayake, B. T. Reed, P. E. Reimer, R. Richards, S. Riordan, Y. Roblin, S. Seeds, A. Shahinyan, P. A. Souder, L. Tang, M. Thiel, Y. Tian, G. M. Urciuoli, E. W. Wertz, B. Wojtsekhowski, W. Xiong, B. Yale, T. Ye, A. Zec, W. Zhang, J. Zhang, X. Zheng
Summary: Precision determinations of the beam-normal single spin asymmetries (A(n)) in the elastic scattering of 0.95 and 2.18 GeV electrons off C-12, Ca-40, Ca-48, and Pb-208 were reported. The measurement results for Ca-40 and Ca-48 are similar to that of C-12, consistent with expectations and validating the theoretical calculations for nuclei with Z ≤ 20. However, the A(n) measurements for Pb-208 show significant disagreement with the results for Z ≤ 20 nuclei, indicating the need for further investigation.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Greger Torgrimsson
Summary: In this study, a new approach was proposed to calculate the momentum expectation value of an electron in a high-intensity laser, considering multiple photon emissions and loops. By finding a recursive formula and expressing it as an integro-differential equation, the O(alpha(n)) term was obtained from O(alpha(n-1)). In the classical limit, the solution to the Landau-Lifshitz equation was derived to all orders by resumming both the energy expansion and alpha expansion for spin-dependent quantum radiation reaction.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Mahmudul H. Khandker, M. Masum Billah, Hiroshi Watabe, A. K. F. Haque, M. Alfaz Uddin
Summary: The work calculates the differential, integrated elastic and momentum transfer cross sections for the elastic scattering of electrons from xenon isonuclear series ions, and investigates the Coulomb glory phenomenon in the ionic series of xenon, argon and neon. Theoretical methodology involves Dirac relativistic partial wave analysis using a complex optical potential and a pure Coulomb potential, with results showing reasonable agreements with experimental data and theoretical calculations.
Article
Physics, Applied
Sapna Mahla, Bobby Antony
Summary: This study presents a theoretical investigation of positron scattering from phosphorus-containing compounds. The calculated cross sections fill the gap in the existing data and provide a benchmark for the accuracy of positron molecule collision computations. The results can also be compared with electron scattering outcomes.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
You Kyoung Chung, Junho Lee, Weon-Gyu Lee, Dongchul Sung, Sudong Chae, Seungbae Oh, Kyung Hwan Choi, Bum Jun Kim, Jae-Young Choi, Joonsuk Huh
Summary: Nb2Se9, a novel material, shows promise for nanoscale electronic devices due to its suitable band gap, high carrier mobility, and chemical stability. With a noticeable band gap and high electron mobility compared to other 2D materials, Nb2Se9 demonstrates potential for use in nanoscale electronics and mid-infrared photodetectors.
Article
Computer Science, Interdisciplinary Applications
Francesc Salvat, Aleksander Jablonski, Cedric J. Powell
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Igor A. Valuev, Gianluca Colo, Xavier Roca-Maza, Christoph H. Keitel, Natalia S. Oreshkina
Summary: This study revisits the longstanding problem of fine-structure anomalies in muonic atoms and performs comprehensive calculations of energy level splittings in muonic Zr-90, Sn-120, and Pb-208, as well as muonic Pb-208. The results suggest that resolving these anomalies may require refinements in quantum electrodynamics corrections.
PHYSICAL REVIEW LETTERS
(2022)
Article
Computer Science, Interdisciplinary Applications
Francesc Salvat, Josep Llosa, Antonio M. Lallena, Julio Almansa
Summary: The Fortran program ECCPA calculates differential and integrated cross sections for elastic collisions of charged particles with atoms using classical-trajectory and quantum methods. The program provides different approximation methods and allows assessment of their accuracy.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Astronomy & Astrophysics
Jun-Yao Xu, Zheng-Zheng Li, Bao-Hua Sun, Yi-Fei Niu, Xavier Roca-Maza, Hiroyuki Sagawa, Isao Tanihata
Summary: The nuclear symmetry energy has a significant impact on determining the equation of state of dense, neutron-rich matter. However, the density dependence parameter L of the symmetry energy is yet to be consistently determined. This study presents a new method to constrain L at saturation density by establishing a linear correlation between L and the charge changing cross section difference of mirror nuclei Si-30-(3)(0) S.
Article
Physics, Multidisciplinary
Paul-Gerhard Reinhard, Xavier Roca-Maza, Witold Nazarewicz
Summary: The recent experimental determination of the parity violating asymmetry APV in 48Ca and 208Pb at Jefferson Lab is important for understanding the arrangement of neutrons and protons inside atomic nuclei. To assess the impact of these measurements, a rigorous theoretical investigation and evaluation of associated uncertainties were conducted. The study concluded that accurate description of APV in 48Ca and 208Pb cannot be achieved by their models.
PHYSICAL REVIEW LETTERS
(2022)
Article
Computer Science, Interdisciplinary Applications
Francesc Salvat, Pedro Andreo
Summary: The Fortran program SBETHE calculates the stopping power of materials for swift charged particles with small charges. It uses the corrected Bethe formula with shell correction derived from numerical calculations and the density effect correction based on an empirical optical oscillator strength model. The program is useful for dosimetry calculations, radiation transport simulations, and as a pedagogical tool.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Physics, Nuclear
Juan Lopez Morana, Xavier Vinas
Summary: In this study, a semi-microscopic optical model is used to investigate quasielastic (p, n) exchange reactions. The model is derived from a previous work based on a nuclear matter approach and utilizes a G-matrix built with an effective Gogny interaction. The Distorted Wave Born Approximation is employed to evaluate wave functions and compute transition matrix elements. The model shows good agreement with experimental data for various reactions across the periodic table at different energies.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2023)
Article
Physics, Nuclear
P. Bano, S. P. Pattnaik, M. Centelles, X. Vinas, T. R. Routray
Summary: The correlation between charge radii differences in mirror nuclei pairs and neutron skin thickness was studied using a finite range simple effective interaction model. Precisely measured charge radii difference data in mirror pairs such as 34Ar-34S, 36Ca-36S, 38Ca-38Ar, and 54Ni-54Fe were used to determine an upper limit for the slope parameter of nuclear symmetry energy, L, at around 100 MeV. The upper limit of L was found to be consistent with the upper bound of the NICER PSR J0740+6620 constraint for the radius R1.4 of 1.4M0 neutron stars at the 1σ level. The lower bound of the NICER R1.4 data constrains the lower limit of L to approximately 70 MeV. The tidal deformability 1.4 constraint extracted from the GW170817 event at the 2σ level and recent PREX-2 and CREX data on neutron skin thickness are discussed within the range of L = 70-100 MeV.
Article
Physics, Nuclear
P. Bano, X. Vinas, T. R. Routray, M. Centelles, M. Anguiano, L. M. Robledo
Summary: In this study, a generalized parametrization of the simple effective interaction (SEI) was used to reproduce the experimentally known crossing between different single-particle proton and neutron levels in different isotopes. The addition of a short-range tensor force allowed for the description of observed gaps without compromising the agreement with existing experimental data and mean-field models.
Article
Physics, Nuclear
Tomoya Naito, Xavier Roca-Maza, Gianluca Colo, Haozhao Liang, Hiroyuki Sagawa
Summary: The effects of isospin symmetry breaking on the charge radius difference of mirror nuclei were studied in this research. The study focused on the examples of 48Ca and 48Ni, where certain effects could be neglected for a transparent analysis. It was found that isospin symmetry breaking effects can significantly impact the estimated value for the symmetry energy slope parameter. However, recent ab initio calculations suggest that the effects on ground-state energy and charge radii might be relatively small.
Article
Optics
Francesc Salvat
Summary: This paper briefly reviews the classical and quantum theories leading to the asymptotic Bethe formula for the stopping power of charged particles in matter. It describes models and approximations for calculating corrections that extend the validity range of the formula. The results show that the stopping powers calculated from the corrected formula are in close agreement with available measurements.
Article
Optics
Francesc Salvat, Laia Barjuan, Pedro Andreo
Summary: The relativistic plane-wave Born approximation is used to study inelastic collisions between charged particles and atoms. The study computes a database of longitudinal and transverse generalized oscillator strengths for all subshells of the ground-state configurations of elements. The results do not satisfy the Bethe sum rule and asymptotic high-energy formulas are derived to account for relativistic departures from the rule. Shell corrections to the stopping cross section are calculated and compared with previous estimates.
Article
Physics, Nuclear
A. Liardi, F. Marino, G. Colo, X. Roca-Maza, E. Vigezzi
Summary: A complete solution to the inverse problem of Kohn-Sham (KS) density functional theory is proposed in this article. It consists of two steps: determining the effective KS potential and numerically computing the KS energy based on a line integration formula using potentials along a path in the space of densities. The method shows promise for future applications, as demonstrated by a successful benchmark test on a simplified yet realistic nuclear system.
Article
Physics, Nuclear
Tomoya Naito, Gianluca Colo, Haozhao Liang, Xavier Roca-Maza, Hiroyuki Sagawa
Summary: This article proposes a new approach to determine the strength of the charge symmetry breaking term in nuclear density functional theory. It shows that by using the mass difference of mirror nuclei and the neutron-skin thickness of doubly-closed-shell nuclei, the strength of the CSB interaction can be constrained separately from other isospin symmetry breaking forces with an uncertainty of less than 6%.