Investigation of isospin-symmetry breaking in mirror energy difference and nuclear mass with ab initio calculations

Ground-state mass of 22Al and test of state-of-the-art ab initio calculations*

“…The ground-state mass excess of Al was determined as ME= keV, which is 97(400) keV smaller than the extrapolated ME= keV in 20 [27]. Subsequently, the proton separation energy of Al was obtained as =90 (10) keV, showing that this nucleus is weakly bound. The measured ground-state mass of Al is compared with predictions from various mass models in Fig.…”

Customizing catalyst surface/interface structures for electrochemical CO2 reduction

“…[10][11][12] In the past few decades, with the emergence of advanced methodologies in both experimental characterization and theoretical simulation, the research focus of catalysis has shied from observing and documenting the macroscopic catalytic phenomena to monitoring and deciphering catalytic processes on the atomic/molecular level. 2,[13][14][15] The idea of structure/mechanism-oriented catalyst design has thus emerged, which offers immense opportunities for developing high-performance CO 2 RR catalysts. Some catalytic systems with specic structures and functions can now be constructed via rational design; with the surface/interface reaction processes ideally customized, catalysts with superior activities, selectivities and stabilities can be obtained eventually.…”

“…21,22 In addition, only by looking deep into the surface/interface structures of catalysts can we establish the structure-performance relationship for CO 2 RR catalysis, which is of fundamental importance for developing more advanced electrocatalysts. 2,23 In this review, we start with an overview of the advanced methodologies for probing the structures of catalyst surfaces/ interfaces (including synchrotron-radiation-based X-ray absorption spectroscopy, atomic-resolution electron microscopy, and infrared spectroscopy), which could offer more indepth insights into catalytic structures at the atomic level. Subsequently, we present a systematic overview on the recent progress in customizing the surfaces/interfaces of CO 2 RR electrocatalysts, including atomic-site catalysts (e.g., single-atomic-site catalysts, diatomic-site catalysts), metal catalysts, and metal/oxide catalysts.…”

“…Approximately half of the emission could be neutralized by land and ocean via the natural carbon cycle, and the other half accumulates in the Earth's atmosphere, resulting in pressing issues relating to environment and sustainability. [1][2][3] According…”

Ab initio calculations of mirror energy difference in sd-shell nuclei*

“…For example, for -shell isotopes, we selected the 16 O as the inner core, the full shell above the 16 O was chosen as the valence space for both valence protons and valence neutrons, and the remaining higher-energy single-particle states were considered as excluded spaces. By using a sequence of similarity unitary transformations [33,37,[46][47][48][49][50][51][52], the low-energy degrees of freedom from high-energy excitations in many-body systems were decoupled. After that, the VS-IMSRG calculation yielded an effective Hamiltonian within the valence space, which was written as [32,33]…”