Review
Physics, Nuclear
E. G. Lanza, L. Pellegri, A. Vitturi, M. V. Andres
Summary: This review critically describes the theoretical research conducted on low-lying dipole states known as Pygmy Dipole Resonances (PDR). Experimental techniques and recent findings are briefly surveyed as an introduction. The presence of PDR on stable and unstable nuclei with neutron excess is well-established. Theoretical approaches, ranging from macroscopic collective models to microscopic mean-field theories, are reviewed. The isospin mixed nature of PDR allows for the study of excitation with isovector and isoscalar probes. The interplay of Coulomb and nuclear contributions, their dependence on mass, charge, and incident energy are analyzed. Despite some remaining open questions, most features of PDR are well-described by theoretical approaches.
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2023)
Article
Optics
Vladimir Sautenkov, Sergey Saakyan, Andrey Bobrov, Nikita Morozov, Boris B. Zelener
Summary: This study investigates the nonlinear selective reflection of natural mixtures of Rb isotopes on the interface of YAG/high density vapor. The experimental results show that the spectral profiles significantly narrow at moderate laser beam intensities, while they are practically independent of the laser intensity at high intensities. This effect can be attributed to the intensity-induced saturation of the dipole broadening and the strong reduction of the field broadening.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Physics, Multidisciplinary
T. Isdraila, V Baran, M. Colonna, A. Nicolin, M. C. Raportaru, E. Boicu
Summary: The model extends the approach for studying the collective properties of Giant Dipole Resonance, effectively considering the non-uniform density distribution inside the nucleus. The predictions show that Pygmy Dipole Resonance appears as a collective dipolar mode, closely resembling experimentally observed values of the Energy Weighted Sum Rule.
ROMANIAN JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
Abhishek Sharma, P. Arumugam, A. K. Rhine Kumar
Summary: We propose a microscopic approach to study giant dipole resonance (GDR) by analyzing the response of nuclear density to dipole radiation. This is done through the calculation of single-particle wavefunctions using a triaxial Woods-Saxon potential. We compare the results with a macroscopic approach for GDR and explain the recent experimental data for Nd144-152 and Sm-152 nuclei. Additionally, we analyze the fine structure of GDR cross-section using the continuous wavelet transform (CWT) framework and explain its origin.
Article
Optics
Hong Wang, Yingying Yu, Rui Zeng, Bo Sun, Wenxing Yang
Summary: In this paper, an actively tunable toroidal metamaterials are proposed to achieve programmable toroidal dipole manipulations with electric control. The proof-of-concept experiments demonstrate good performance and potential applications of the proposed toroidal metamaterials.
Article
Chemistry, Multidisciplinary
Ashwin K. Boddeti, Jun Guan, Tyler Sentz, Xitlali Juarez, Ward Newman, Cristian Cortes, Teri W. Odom, Zubin Jacob
Summary: In this experiment, long-range dipole-dipole interactions are achieved through surface lattice resonances in a plasmonic nanoparticle lattice, paving the way for engineering and controlling interactions between ensembles of emitters at room temperature.
Article
Chemistry, Multidisciplinary
Botao Gao, Wenjie Zhou, Hui Liu, He Qi, Shiqing Deng, Shi Liu, Jun Chen
Summary: The correlation between the underlying structure and the critical electric field in Pb(Zr,Sn,Ti)O3-based antiferroelectrics has been established using in situ synchrotron X-ray diffraction and high-resolution neutron diffraction. It is found that the critical electric field is determined by the angle between the average polarization vector in the incommensurate antiferroelectric state and the [111]P polarization direction in the rhombohedral ferroelectric state. A large polarization rotation angle results in a large critical electric field. Density functional theory (DFT) calculations further support that a smaller angle polarization rotation requires lower energy. Our discovery provides guidance for optimizing the performance of antiferroelectric materials.
Article
Optics
R. P. de Groote, S. Kujanpaa, A. Koszorus, J. G. Li, I. D. Moore
Summary: The hyperfine constants of a specific state in neutral Yb were measured using three different dipole transitions, showing no evidence of a nonzero octupole moment in Yb-173.
Article
Astronomy & Astrophysics
Krzysztof Pachucki, Vojtech Patkos, Vladimir A. Yerokhin
Summary: We present an accurate determination of the nuclear magnetic dipole moments of 6,7Li in atomic Li. The obtained results significantly improve upon the literature values and highlight the importance of reliable theoretical calculations of the nuclear shielding corrections.
Proceedings Paper
Physics, Multidisciplinary
M. Markova, A. -C. Larsen, F. L. B. Garrote
Summary: The low-lying gamma-ray strength functions (GSFs) of Sn isotopes were studied using the Oslo method and combined with the inelastic relativistic proton scattering GSFs. The evolution of the pygmy dipole resonance (PDR) with increasing neutron number was investigated. The PDR was found to be centered at approximately 8 MeV in all isotopes, with the largest contribution occurring in Sn-120.
ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT
(2023)
Article
Astronomy & Astrophysics
J. H. Bai, Z. M. Niu, B. Y. Sun, Y. F. Niu
Summary: The research team successfully utilized multitask learning approach to evaluate GDR key parameters in nuclear physics, leading to significant improvement in accuracy. By correctly classifying types of nuclei, they were able to enhance the precision of the data and extrapolate to unknown nuclei.
Article
Physics, Multidisciplinary
William J. Huggins, Kianna Wan, Jarrod McClean, Thomas E. O. ' Brien, Nathan Wiebe, Ryan Babbush
Summary: This Letter addresses the task of estimating the expectation values of multiple observables in quantum algorithms. The authors propose an approach that utilizes a quantum gradient estimation algorithm to achieve efficient estimation. They demonstrate that this approach provides optimal scaling in the high-precision regime and showcases its flexibility.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
AlAhmadi N. Ameenah
Summary: The study demonstrates that the nanocrystal system coupled via dipolar interaction shows an anti-crossing behavior under an external applied magnetic field, resulting in a Lorentz-shaped photoluminance intensity signal with an unusual dip-shape at the zero detuned states. This dip-shape corresponds to the point where crossing would occur in the absence of dipolar interaction.
RESULTS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
Claire E. Dickerson, Han Guo, Ashley J. Shin, Benjamin L. Augenbraun, Justin R. Caram, Wesley C. Campbell, Anastassia N. Alexandrova
Summary: The study investigates the possibility of using chemical functional groups to construct optical cycling units, finding that optical cycle leakage can be effectively reduced through chemical substitution to enhance the electron-withdrawing strength of the aromatic molecular ligand. This offers a new approach for implementing optical cycling technology in large organic compounds.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
Hajime Torii
Summary: The behavior of electrons relevant to the THz spectral features of liquid methanol is analyzed theoretically through the analysis of dipole derivatives and electron density derivatives with respect to molecular translations and rotations of hydrogen-bonded methanol. The hydrogen-bond-induced components of these derivatives are reasonably well explained or modeled by intermolecular charge fluxes through hydrogen bonds. Spectral simulations based on this model, combined with classical molecular dynamics, show good agreement with the overall observed spectral features. The factors related to intensity generation and molecular motion that are important for each element of the spectral features are discussed.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Correction
Physics, Nuclear
C. T. Angell, S. L. Hammond, H. J. Karwowski, J. H. Kelley, M. Krticka, E. Kwan, A. Makinaga, G. Rusev
Article
Physics, Nuclear
N. Benouaret, J. Beller, H. Pai, N. Pietralla, V. Yu Ponomarev, C. Romig, L. Schnorrenberger, M. Zweidinger, M. Scheck, J. Isaak, D. Savran, K. Sonnabend, R. Raut, G. Rusev, A. P. Tonchev, W. Tornow, H. R. Weller, J. H. Kelley
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2016)
Article
Physics, Nuclear
M. E. Gooden, C. W. Arnold, J. A. Becker, C. Bhatia, M. Bhike, E. M. Bond, T. A. Bredeweg, B. Fallin, M. M. Fowler, C. R. Howell, J. H. Kelley, Krishichayan, R. Macri, G. Rusev, C. Ryan, S. A. Sheets, M. A. Stoyer, A. P. Tonchev, W. Tornow, D. J. Vieira, J. B. Wilhelmy
NUCLEAR DATA SHEETS
(2016)
Article
Astronomy & Astrophysics
B. Loeher, D. Savran, T. Aumann, J. Beller, M. Bhike, N. Cooper, V. Derya, M. Duchene, J. Endres, A. Hennig, P. Humby, J. Isaak, J. H. Kelley, M. Knoerzer, N. Pietralla, V. Yu. Ponomarev, C. Romig, M. Scheck, H. Scheit, J. Silva, A. P. Tonchev, W. Tornow, F. Wamers, H. Weller, V. Werner, A. Zilges
Article
Physics, Nuclear
J. H. Kelley, J. E. Purcell, C. G. Sheu
Article
Astronomy & Astrophysics
A. P. Tonchev, N. Tsoneva, C. Bhatia, C. W. Arnold, S. Goriely, S. L. Hammond, J. H. Kelley, E. Kwan, H. Lenske, J. Piekarewicz, R. Raut, G. Rusev, T. Shizuma, W. Tornow
Article
Physics, Nuclear
C. Marshall, K. Setoodehnia, F. Portillo, J. H. Kelley, R. Longland
Summary: The stars in globular clusters exhibit star-to-star anticorrelations between oxygen and sodium in their atmospheres. An energy analysis of Mg-24 states was conducted based on a new measurement of the Na-23(He-3, d) Mg-24 reaction. A key resonance in Na-23(p, gamma) Mg-24 was found to be at E-r(c.m) = 133(3) keV, 5 keV lower than previously assumed, leading to a significant increase in the reaction rate.
Article
Physics, Nuclear
K. Setoodehnia, J. H. Kelley, C. Marshall, F. Portillo Chaves, R. Longland
Proceedings Paper
Optics
A. P. Tonchev, N. Tsoneva, S. Goriely, C. Bhatia, C. W. Arnold, S. L. Hammond, J. H. Kelley, E. Kwan, H. Lenske, J. Piekarewicz, R. Raut, G. Rusev, T. Shizuma, W. Tornow
16TH INTERNATIONAL SYMPOSIUM ON CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS (CGS16)
(2018)
Article
Physics, Nuclear
K. Setoodehnia, C. Marshall, J. H. Kelley, J. Liang, F. Portillo Chaves, R. Longland
Proceedings Paper
Nuclear Science & Technology
A. P. Tonchev, J. E. Escher, N. Scielzo, P. Bedrossian, R. S. Ilieva, P. Humby, N. Cooper, P. M. Goddard, V. Werner, W. Tornow, G. Rusev, J. H. Kelley, N. Pietralla, M. Scheck, D. Savran, B. Loeher, S. W. Yates, B. P. Crider, E. E. Peters, N. Tsoneva, S. Goriely
ND 2016: INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY
(2017)
Proceedings Paper
Physics, Multidisciplinary
Anton Tonchev, Chitra Bhatia, John Kelley, Rajarshi Raut, Gencho Rusev, Werner Tornow, Nadia Tsoneva
CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
(2015)
Proceedings Paper
Physics, Multidisciplinary
V. Werner, N. Cooper, P. M. Goddard, P. Humby, R. S. Ilieva, G. Rusev, J. Beller, C. Bernards, B. P. Crider, J. Isaak, J. H. Kelley, E. Kwan, B. Loeher, E. E. Peters, N. Pietralla, C. Romig, D. Savran, M. Scheck, A. P. Tonchev, W. Tornow, S. W. Yates, M. Zweidinger
CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
(2015)
Proceedings Paper
Physics, Multidisciplinary
J. Isaak, B. Loeher, D. Savran, T. Aumann, J. Beller, N. Cooper, V. Derya, M. Duchene, J. Endres, E. Fiori, J. H. Kelley, M. Knoerzer, N. Pietralla, V. Yu. Ponomarev, C. Romig, M. Scheck, H. Scheit, J. Silva, A. P. Tonchev, W. Tornow, H. R. Weller, V. Werner, A. Zilges, M. Zweidinger
CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
(2015)
Proceedings Paper
Physics, Multidisciplinary
N. Benouaret, J. Beller, J. Isaak, J. H. Kelley, H. Pai, N. Pietralla, V. Yu. Ponomarev, R. Raut, C. Romig, G. Rusev, D. Savran, M. Scheck, L. Schnorrenberger, K. Sonnabend, A. P. Tonchev, W. Tornow, H. R. Weller, M. Zweidinger
CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
(2015)
