630 papers
The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.
At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.
Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.
This paper demonstrates a method to measure interaction-induced energy shifts of Rydberg atoms in hot vapors by observing split electromagnetically induced absorption (EIA) features, offering a valuable tool for modeling mean-field interactions and sensing strong atomic interactions.
This paper demonstrates the production of room-temperature beams of metastable titanium atoms via laser ablation into various buffer gases, highlighting their remarkable resilience to quenching during thousands of collisions and providing quantitative data on yield, quenching rates, and beam characteristics to optimize ablation cell design.
This paper reports the successful realization of a magneto-optical trap for metastable titanium atoms using a 498 nm transition, demonstrating that optical pumping from the ground state significantly enhances loading rates and atom numbers while achieving high densities and low temperatures without the need for repumping light.
This study numerically inverts published time-of-flight ion spectrometer data to determine the optical cycle-averaged ionization rates of Ar, O, and N as a function of local instantaneous laser intensity up to approximately 300 TW/cm for 800 nm ultrashort pulses, while recalibrating microchannel plate collection efficiencies and validating O results against multiphoton cross-section data.
This paper presents a semi-empirical model that modifies theoretical kinetic energy spectra with two adjustable parameters to describe the thermalized temperature and mean axial momentum of electrons released from O by an 800 nm ultrashort pulsed laser as a function of peak intensity, thereby providing essential initial conditions for electrodynamic fluid simulations.
This paper experimentally and theoretically demonstrates that the amplitude and frequency shifts of Stark-split Rydberg EIT resonances depend on the relative orientation between laser polarization and a static dc electric field, enabling vector electrometry for quantum sensing applications.
This paper presents a robust, modular cesium magneto-optical trap utilizing diverging laser beams and fiber-coupled optics to achieve stable operation with up to atoms and sub-10 K temperatures, while also demonstrating successful trapping in a non-conventional diagonal beam geometry.
Using a metallic magnetic calorimeter to measure the transition energy in muonic Be with unprecedented precision, this study determines a nuclear charge radius of 2.5506(51) fm that is significantly more accurate than previous values and marks the first such determination via muonic x-ray spectroscopy with microcalorimeters.
This paper presents a quantitatively validated method using Single-Pass Absorption Spectroscopy (SPAS) and a comprehensive density-matrix model to accurately determine the rubidium atomic number density in MEMS vapor cells across a wide range of temperatures, laser powers, and cell lengths, thereby optimizing their performance for quantum sensing and communication applications.
This paper reassesses the dominant clock-active site in , using thermodynamic estimates and density functional theory to demonstrate that it is an isolated thorium substitution charge-compensated by fluorine interstitials rather than a thorium dimer, thereby providing a microscopic basis for reducing linewidth broadening in solid-state nuclear clocks.