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Related papers: Validity of the ICFT R-matrix method: Be-like Al$^…

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Calculations of transition energies between low-lying states of mercury atom are performed in the frame of combined CI/MBPT2 method. Results of all-electron relativistic calculations (using the Dirac-Coulomb Hamiltonian) are compared with…

Atomic Physics · Physics 2007-05-23 N. Mosyagin , M. Kozlov , A. Titov

We present electron collision strengths and their thermally averaged values for the forbidden lines of the astronomically abundant doubly-ionized oxygen ion, O^{2+}, in an intermediate coupling scheme using the Breit-Pauli relativistic…

Atomic Physics · Physics 2014-05-30 P. J. Storey , Taha Sochi , N. R. Badnell

The unstable nucleus $^8$Be, with its two $\alpha$-cluster configuration, is the doorway to the formation of heavier $\alpha$-cluster nuclei. Most importantly, its the precursor of the production of $^{12}$C through the Hoyle state, a…

Nuclear Theory · Physics 2022-10-12 Suprita Chakraborty , Rajkumar Santra , Subinit Roy , V. M. Datar

We investigate the one-dimensional Ising model with long-range interactions decaying as $1/r^{1+s}$. In the critical regime, for $1/2 \leq s \leq 1$, this system realizes a family of nontrivial one-dimensional conformal field theories…

High Energy Physics - Theory · Physics 2026-02-04 Dario Benedetti , Edoardo Lauria , Dalimil Mazac , Philine van Vliet

With construction of ITER progressing and existing tokamaks carrying out ITER-relevant experiments, accurate fundamental and derived atomic data for numerous ionization stages of tungsten (W) is required to assess the potential effect of…

Atomic Physics · Physics 2015-08-28 M. M. Bluteau , M. G. O'Mullane , N. R. Badnell

Energy levels and transition rates for electric-dipole, electric-quadrupole, electric-octupole, magnetic-dipole, and magnetic-quadrupole transitions among the levels arising from the $n\ \leq$ 5 configurations in B-like Kr XXXII are…

Atomic Physics · Physics 2020-05-20 Yanting Li , Ra Si , Jinqing Li , Chunyu Zhang , Ke Yao , Kai Wang , Mingfeng Gu , Chongyang Chen

Energy levels, radiative rates and lifetimes are calculated among the lowest 98 levels of the n <= 4 configurations of Be-like Al X. The GRASP (General-purpose Relativistic Atomic Structure Package) is adopted and data are provided for all…

Solar and Stellar Astrophysics · Physics 2015-06-18 K. M. Aggarwal , F. P. Keenan

We report calculations of energy levels, radiative rates and electron impact excitation cross sections and rates for transitions in He-like Kr XXXV. The GRASP (general-purpose relativistic atomic structure package) is adopted for…

Atomic Physics · Physics 2015-06-05 K. M. Aggarwal , F. P. Keenan

We report calculations of energy levels, radiative rates, collision strengths, and effective collision strengths for transitions among the lowest 25 levels of the n <= 5 configurations of He~II. The general-purpose relativistic atomic…

Solar and Stellar Astrophysics · Physics 2017-04-25 K. M. Aggarwal , A. Igarashi , F. P. Keenan , S. Nakazaki

The Breit-Pauli R-matrix method developed under the Iron Project has been used to obtain extensive sets of oscillator strengths and transition probabilities for dipole allowed and intercombination fine structure transitions in carbon like…

Astrophysics · Physics 2009-10-31 Sultana N. Nahar

Low-energy heavy-ion induced reactions often involve incomplete fusion, but the dependence of ICF on various entrance-channel parameters remains unclear. In this work, we measure channel-by-channel production cross-sections of different…

We performed simulations for solid molecular hydrogen at high pressures (250GPa$\leq$P$\leq$500GPa) along two isotherms at T=200 K (phases III and VI) and at T=414 K (phase IV). At T=200K we considered likely candidates for phase III, the…

Materials Science · Physics 2017-11-22 Giovanni Rillo , Miguel A. Morales , David M. Ceperley , Carlo Pierleoni

We present benchmark integrated and differential cross-sections for electron collisions with H$_2$ using two different theoretical approaches, namely, the R-matrix and molecular convergent close-coupling (MCCC). This is similar to…

Chemical Physics · Physics 2020-08-31 T. Meltzer , J. Tennyson , Z. Mašín , M. C. Zammit , L. H. Scarlett , D. V. Fursa , I. Bray

Calculations are presented which use the molecular R-matrix with pseudo-states (MRMPS) method to treat electron impact electron detachment and electronic excitation of the carbon dimer anion. Resonances are found above the ionisation…

Atomic Physics · Physics 2010-07-07 Gabriela Halmova , J. D. Gorfinkiel , Jonathan Tennyson

In a recent paper, Wang and Jiang (At. Data Nucl. Data Tables 148 (2022) 101532) have reported data for energy levels, radiative rates (A-values), and effective collision strengths ($\Upsilon$) for some transitions of five Al-like ions,…

Atomic Physics · Physics 2023-05-22 K. M. Aggarwal , K. W. Smith

We report ground- and excited-state dipole moments and oscillator strengths (computed in different ``gauges'' or representations) of full configuration interaction (FCI) quality using the selected configuration interaction method known as…

Plasma models built on extensive atomic data are essential to interpreting the observed cosmic spectra. H-like Lyman series and He-like triplets observable in the X-ray band are powerful diagnostic lines to measure the physical properties…

Atomic Physics · Physics 2022-12-14 Junjie Mao , G. Del Zanna , Liyi Gu , Chunyu Zhang , N. R. Badnell

We investigate configuration-interaction (CI) calculations on a basis of molecular orbitals generated by preliminary density-functional theory (DFT) calculations. We use this CI/DFT framework to improve the modeling of core-excited states…

Chemical Physics · Physics 2025-09-11 Giorgio Visentin , Francois Mauger

The efficiency of the recently proposed iCIPT2 [iterative configuration interaction (iCI) with selection and second-order perturbation theory (PT2); J. Chem. Theory Comput. 16, 2296 (2020)] for strongly correlated electrons is further…

Chemical Physics · Physics 2020-11-19 Ning Zhang , Wenjian Liu , Mark R. Hoffmann

Several investigations on the complete-incomplete fusion (CF-ICF) dynamics of $\alpha$-cluster well-bound nuclei has been contemplated above the Coulomb barrier ($\sim$ 4-7 MeV/nucleon) in recent years. It is therefore expected to observe…

Nuclear Experiment · Physics 2017-09-13 Deepak Kumar , Moumita Maiti , Susanta Lahiri