Article
Astronomy & Astrophysics
F. C. L. Crespi, A. Bracco, E. G. Lanza, A. Tamii, N. Blasi, F. Camera, O. Wieland, N. Aoi, D. L. Balabanski, S. Bassauer, A. S. Brown, M. P. Carpenter, J. J. Carroll, M. Ciemata, A. Czeszumska, P. J. Davies, V. Derya, L. M. Donaldson, Y. D. Fang, H. Fujita, G. Gey, H. T. Ha, M. N. Harakeh, T. Hashimoto, N. Ichige, E. Ideguchi, A. Inoue, J. Isaak, C. Iwamoto, D. G. Jenkins, T. Klaus, N. Kobayashi, T. Koike, M. Krzysiek, M. K. Raju, M. Liu, A. Maj, L. Morris, P. von Neumann Cosel, S. Noji, H. J. Ong, S. G. Pickstone, N. Pietralla, D. Savran, J. M. Schmitt, M. Spieker, G. Steinhilber, C. Sullivan, B. Wasilewska, M. Weinert, V. Werner, Y. Yamamoto, T. Yamamoto, R. G. T. Zegers, X. Zhou, S. Zhu, A. Zilges
Summary: The low-lying dipole strength in Zr-90 and Zr-94 nuclei was investigated using (p, p'gamma) and (alpha, alpha'gamma) experiments. A comparison of the nuclear probes with existing gamma data showed different excitation patterns. The study suggested a mixing of isoscalar and isovector components in the 1(-) states below the particle binding energy.
Article
Nuclear Science & Technology
Si-Zhe Xu, Shi-Sheng Zhang, Xiao-Qian Jiang, Michael Scott Smith
Summary: In this study, the complex momentum representation (CMR) approach coupled with new potentials was used to successfully predict the resonant energy of the 2p(3/2) state in O-17 and to study near-threshold resonances in (29,31)F that contribute to halo formation.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Physics, Nuclear
T. Shizuma, F. Minato, M. Omer, T. Hayakawa, H. Ohgaki, S. Miyamoto
Summary: The low-lying dipole transitions in Pb-207 were measured using a quasimonochromatic, linearly polarized photon beam. Spins and/or parities of the observed states were determined from the intensity asymmetry of resonantly scattered gamma rays. The electric (E1) and magnetic (M1) dipole strengths were obtained and compared with predictions to investigate photoabsorption cross sections near the neutron separation energy.
Article
Physics, Nuclear
S. Frauendorf, R. Schwengner
Summary: Magnetic dipole strength functions were determined for a series of germanium isotopes using the shell model. Two low-lying magnetic dipole modes were identified and their correlation with electric quadrupole transition strengths was observed.
Article
Physics, Multidisciplinary
Rui Li, Jiqun Sang, Xiaohe Lin, Jianjun Li, Guiying Liang, Yong Wu
Summary: The electronic structure and spectroscopic constants of CS molecule, as well as its opacity in atmospheric conditions, have been investigated using advanced computational methods. The study finds that with increasing temperature, the band systems of CS from different transitions become mixed and the band boundaries become blurred.
Article
Physics, Multidisciplinary
Azzeddine Ait Ben Mennana, Mostafa Oulne
Summary: This study investigated the IVGDR in even-even Sm isotopes using TDHF, comparing calculated dipole strength with experimental data for Sm128-164. Predictions were made for less neutron-rich Sm128-142 and neutron-rich Sm156-164 isotopes. The correlation between quadrupole deformation and giant dipole resonance spectra was also examined.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Astronomy & Astrophysics
K. R. Mashtakov, V. Yu. Ponomarevc, M. Scheck, S. W. Finch, J. Isaak, M. Zweidinger, O. Agar, C. Bathia, T. Beck, J. Beller, M. Bowrya, R. Chapman, M. M. R. Chishti, U. Friman-Gayer, L. P. Gaffney, P. E. Garrett, E. T. Gregor, J. M. Keatings, U. Koster, B. Loher, A. D. MacLean, D. O'Donnell, H. Pai, N. Pietralla, G. Rainovski, M. Ramdhane, C. Romig, G. Rusev, D. Savran, G. S. Simpson, J. Sinclair, K. Sonnabend, P. Spagnoletti, A. P. Tonchev, W. Tornow
Summary: The nature of the high-lying final levels of 96Ygs beta decay has been investigated using high-resolution gamma-ray spectroscopy and inelastic photon scattering experiments, revealing 1- levels associated with the Pygmy Dipole Resonance. A comprehensive approach was used to determine the wavefunction and absolute E1 excitation strength, with comparisons between beta decay and total absorption gamma-ray spectroscopy showing good agreement.
Article
Physics, Nuclear
T. Shizuma, S. Endo, A. Kimura, R. Massarczyk, R. Schwengner, R. Beyer, T. Hensel, H. Hoffmann, A. Junghans, K. Roemer, S. Turkat, A. Wagner, N. Tsoneva
Summary: The dipole and quadrupole strength distribution of 204Pb was investigated using a nuclear resonance fluorescence experiment. The experiment utilized bremsstrahlung produced by an electron beam and identified resonantly excited states and their spins. Monte Carlo simulations of gamma-ray cascades were performed to determine transition intensities and branching ratios. The experimental results were compared to predictions from the quasiparticle-phonon model.
Article
Optics
Changli Wei, Lidan Xiao, Lulu Li, Bing Yan
Summary: High-level ab initio calculations are performed on the electronic structure and spectroscopic properties of Se2 using icMRCI method with Davidson correction and SR effect. The SOC effect is considered via state-interacting technique with the full Breit-Pauli Hamiltonian. The PECs of 22 A-S states of Se2 are computed, and after taking SOC effect into account, PECs of 28 Q states are obtained. The spectroscopic constants of the bound A-S and Q states are determined, and the spin-orbit induced predissociation mechanism of the B3Eu- state is discussed.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Multidisciplinary Sciences
Tim Sailer, Vincent Debierre, Zoltan Harman, Fabian Heisse, Charlotte Konig, Jonathan Morgner, Bingsheng Tu, Andrey V. Volotka, Christoph H. Keitel, Klaus Blaum, Sven Sturm
Summary: Quantum electrodynamics (QED) is a fundamental theory that has been experimentally verified to be in excellent agreement with results. A new measurement technique has been developed to directly measure the difference in g factors of highly charged ions. This technique provides accurate results and is important for validating existing theories and constraining new physics.
Article
Optics
Yue Niu, Wenli Zou
Summary: The low-lying Omega states of the WO molecule were investigated using the MS-CASPT2 method with consideration of spin-orbit coupling effects. Potential energy curves and spectroscopic constants were obtained from the calculations. Comparisons between the theoretical and experimental results showed reasonable agreements, providing useful guidance for future experimental and theoretical studies of WO.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Crystallography
Paulo H. B. Brant Carvalho, Amber Mace, Inna Martha Nangoi, Alexandre A. Leitao, Chris A. Tulk, Jamie J. Molaison, Ove Andersson, Alexander P. Lyubartsev, Ulrich Haeussermann
Summary: The high pressure structural behavior of H-2 and Ne clathrate hydrates was investigated, and the transitions of H-2 and Ne hydrates under different pressure and temperature conditions were observed.
Article
Physics, Multidisciplinary
Wen Yan, Wenli Zou
Summary: In this study, the ground state of osmium monoxide (OsO) was investigated using high-precision calculations. The unexpected discovery of the true ground state will have significant implications for future studies on the spectroscopic properties of OsO.
Article
Chemistry, Physical
Demeter Tzeli, Ioannis Karapetsas, Dakota M. Merriles, Joshua C. Ewigleben, Michael D. Morse
Summary: This study presents an accurate investigation of the chemical bonding and electronic structure of the MoS molecule, highlighting the importance of including inner electrons in the correlated space. The experimental measurement of the bond dissociation energy is in excellent agreement with the computational result, demonstrating the accuracy of the calculations. The connection between the chemical bonding of MoS species and the solid MoS2 is emphasized.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Physics, Nuclear
S. Sidorov, D. Zhulyaeva, T. Tretyakova
Summary: This study investigates excited states in the low-energy spectra of Ni70-76. It employs pairing forces in the form of surface delta interaction to explain the formation of the ground state multiplet with seniority nu = 2 states. The splitting of the multiplet is described using mass relationships of neighboring nuclei. The seniority model is then used to reproduce or predict specific states in odd-even isotopes and even-even isotopes. The results are compared with the structure of similar multiplets in N = 50 isotones.
Article
Physics, Multidisciplinary
Takeru Yokota, Haruki Kasuya, Kenichi Yoshida, Teiji Kunihiro
Summary: A density-functional theory for superfluid systems is developed within the framework of the functional renormalization group, introducing the effective action for particle-number and non-local pairing densities. The resulting Kohn-Sham potential includes pairing potentials and expresses external, Hartree, pairing, and exchange-correlation terms separately. This formalism provides a systematic way to improve correlations and accurately predicts the ground-state energy of the Hartree-Fock-Bogoliubov theory.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Wataru Horiuchi, Toru Sato, Yuichi Uesaka, Kenichi Yoshida
Summary: The paper proposes practical formulas for the nuclear beta-decay rate, finding a deviation from simple approximation for heavy nuclei. The next-to-leading-order formula performs well in predicting actual results.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2021)
Correction
Physics, Multidisciplinary
Wataru Horiuchi, Toru Sato, Yuichi Uesaka, Kenichi Yoshida
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Hana Gil, Nobuo Hinohara, Chang Ho Hyun, Kenichi Yoshida
Summary: This study demonstrates that the KIDS functional can appropriately describe the ground-state properties of nuclei and reduce the discrepancy from experimental data by adjusting the parameter of symmetry energy.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Kenichi Yoshida
Summary: The ground-state moments of inertia (MoI) have been investigated for approximately 1700 even-even nuclei from the proton drip line to the neutron drip line up to Z=120 and N=184. The cranked Hartree-Fock-Bogoliubov equation is solved using the Skyrme and pairing energy density functionals. The results show that the MoI greatly increase near the drip line, while the deformation is not as strong as estimated by the empirical relation.
Article
Physics, Multidisciplinary
Wataru Horiuchi, Toru Sato, Yuichi Uesaka, Kenichi Yoshida
Summary: We have derived complete formulas for allowed and first-forbidden transitions of nuclear beta decay, taking into account recoil-order and induced currents up to next-to-leading order. By exploiting the conservation of vector current for multipole operators of natural-parity transitions, the meson exchange current for the vector current is minimized. The formulas are applicable to various beta-decay processes. As a numerical demonstration, we have applied the formulas to the beta decay of a neutron-rich nucleus Sn-160. The next-to-leading order corrections amount to 10-20% of the total decay rate, while induced currents alter the rate by at most 5%.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2023)
Article
Physics, Nuclear
Kenichi Yoshida, Yifei Niu, Futoshi Minato
Summary: This study investigates the influence of nuclear shape changes on the beta-decay half-life by calculating the half-lives of neutron-rich nuclei. The results show that the beta-decay half-life can be a reliable indicator of shape-phase transition, as a sudden shortening of half-lives is found when the nuclear shape changes.
Article
Physics, Nuclear
N. Hizawa, K. Hagino, K. Yoshida
Summary: In this paper, we apply the dynamical generator coordinate method (DGCM) with a conjugate momentum to study nuclear collective excitation. By constructing a numerically workable scheme for a general one-body operator, we investigate the quadrupole vibration of O-16 using the Gogny D1S interaction. Our results show that both the ground state energy and the excitation energies are lowered compared to the conventional GCM, indicating the relevance of the conjugate momentum in collective motions.
Article
Physics, Nuclear
A. Yagi, A. Odahara, H. Nishibata, R. Lozeva, C-B Moon, S. Nishimura, K. Yoshida, N. Yoshinaga, C. Watanabe, K. Higashiyama, T. Shimoda, R. Daido, Y. Fang, P. S. Lee, B. Moon, P. Doornenbal, G. Lorusso, P-A Soderstrom, T. Sumikama, H. Watanabe, T. Isobe, H. Baba, H. Sakurai, F. Browne, Z. Patel, S. Rice, L. Sinclair, J. Wu, Z. Y. Xu, R. Yokoyama, T. Kubo, N. Inabe, H. Suzuki, N. Fukuda, D. Kameda, H. Takeda, D. S. Ahn, Y. Shimizu, D. Murai, F. L. Bello Garrote, J-M Daugas, F. Didierjean, E. Ideguchi, S. Iimura, T. Ishigaki, H. S. Jung, T. Komatsubara, Y. K. Kwon, C. S. Lee, S. Morimoto, M. Niikura, I Nishizuka, K. Tshoo
Summary: The structure of the neutron-rich N = 86 isotope Xe-140 was investigated using beta-gamma spectroscopy, revealing two new beta-decay isomers. Comparisons between experimental results and theoretical calculations were made to discuss the nuclear structures of low-lying states in Xe-140.
Article
Physics, Nuclear
K. Uzawa, K. Hagino, K. Yoshida
Summary: This study investigates the applicability of the generator coordinate method (GCM) as a microscopic theory for cluster radioactivities of heavy nuclei. The results show that the experimental decay rates can be accurately reproduced using this method, and the potential for further development in studying cluster decays of heavy nuclei is discussed.
Article
Physics, Nuclear
Kenichi Yoshida
Summary: In this study, the authors directly solve the coordinate-space cranked Skyrme-Hartree-Fock-Bogoliubov equation to describe the yrast states in weakly bound nuclei. They first demonstrate the method with a numerical calculation for the ground-state band in a medium-mass nucleus, and then apply it to neutron-rich even-N Mg isotopes. The analysis reveals that the appearance of the significantly low I-pi = 2(+) state in Mg-40 is mainly due to the suppression of pairing. The calculation also predicts that the 2(+) state in Mg-42 appears as high in energy as in Mg34-38, while the triaxial deformation is enhanced in nonzero spin states. This numerical framework provides a practical approach for systematically investigating the near yrast states and revealing unique structures in drip-line nuclei.
Article
Physics, Nuclear
Kenichi Yoshida
Summary: This study investigates the SD configurations in Zn-60, Zn-62, and Ge-64 and explores the different roles of energy gaps at particle numbers 30 and 32. The results show that the SD structures in Zn-62 are unique, where the negative-parity SD states have lower energy than the positive-parity ones.
Article
Physics, Nuclear
Kenichi Yoshida
Summary: The researcher explored the characteristics of IV monopole and quadrupole excitations in deformed nuclei using nuclear energy-density functional method, finding some splitting phenomena in giant resonances and drawing conclusions about the K dependence of quadrupole transition strengths.
Article
Physics, Multidisciplinary
Haruki Kasuya, Kenichi Yoshida
Summary: It is shown that the lowest-energy solution of the Hartree-Fock-Bogoliubov equation has even particle-number parity if time-reversal symmetry is conserved in the Hamiltonian. By employing a time-reversal antisymmetric constraint operator to the Hamiltonian, a method for solving the HFB equation to describe the ground state of odd-mass nuclei is rigorously established. Numerical analysis on neutron-rich Mg isotopes demonstrates the anomalous increase in the matter radius of Mg-37 can be well described within the framework of the nuclear energy density functional method, revealing the deformed halo structure.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2021)
Article
Physics, Nuclear
Yoshiki Chazono, Kenichi Yoshida, Kazuki Yoshida, Kazuyuki Ogata
Summary: The study on the triple differential cross section (TDX) and the proton-neutron (pn) pairing strength V-0 in the O-16(p, pd) reaction reveals a clear correspondence between them. This suggests that the (p, pd) reaction could be a promising tool for investigating isoscalar pn pairs in nuclei.
