Results 81 to 90 of about 6,954 (226)

Rydberg atoms in astrophysics [PDF]

New Astronomy Reviews, 2009
Elementary processes in astrophysical phenomena traditionally attract researchers attention. At first this can be attributed to a group of hemi-ionization processes in Rydberg atom collisions with ground state parent atoms. This processes might be studied as a prototype of the elementary process of the radiation energy transformation into electrical ...
Gnedin, Yu. N., Mihajlov, A. A., Ignjatovic, Lj. M., Sakan, N. M., Sreckovic, V. A., Zakharov, M. Yu., Bezuglov, N. N., Klycharev, A. N.   +7 more
openaire   +2 more sources

Spectroscopy and Conformer‐Selective Photoelectron Circular Dichroism of Chiral Molecules

Chemistry – An Asian Journal, Volume 21, Issue 9, 14 May 2026.
Photoelectron circular dichroism (PECD) is a forward–backward asymmetry in the angular distribution of the electrons emitted by a chiral molecule ionized by a circularly polarized light (CPL). Its sensitivity to conformation is studied by one‐photon or resonance‐enhanced two‐photon ionization, the latter being conformer‐selective.
Laurent Nahon, Anne Zehnacker
wiley   +1 more source

Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems

Laser &Photonics Reviews, Volume 20, Issue 10, 22 May 2026.
This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev, Eliran Talker, Yefim Barash, Noa Mazurski, Uriel Levy   +4 more
wiley   +1 more source

Tunable Structural, Electronic, Optical, and Mechanical Properties of Ca3PBrxI3‐X (X = 0, 1, 2, and 3) Cubic Perovskites Via Iodine Incorporation: A First‐Principles Study

Nano Select, Volume 7, Issue 5, May 2026.
ABSTRACT First‐principles calculations with density functional theory are used to study the structural, electronic, and optical properties of Ca3PBrxI3‐x (x = 0, 1, 2, and 3) using both GGA‐PBE functionals with and without the Spin‐orbit coupling effect.
I. K. Gusral Ghosh Apurba, Md Rasidul Islam, Istiak Ahmed Ovi, Md Muneef Hasan, A. M. Quraishi, Sobhi M. Gomha, Magdi E. A. Zaki, Md Masud Rana   +7 more
wiley   +1 more source

Insights Into Bifenthrin Stereoisomers and Their Regulatory Implications

ChemistryOpen, Volume 15, Issue 5, May 2026.
Bifenthrin is a pyrethroid insecticide with two stereogenic centers, generating four stereoisomers with distinct physicochemical and electronic properties. A combined crystallographic and density functional theory study, supported by Hirshfeld surface, quantum theory of atoms in molecules, natural bond orbital, and reactivity descriptor analyses ...
Nayara C. M. Santos, Nayara D. Coutinho, Vitor S. Duarte, Anderson Catao, Antônio S. N. Aguiar, Lucas D. Dias, James O. Fajemiroye, Hamilton B. Napolitano   +7 more
wiley   +1 more source

Optical imaging of Rydberg atoms [PDF]

, 2012
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Mazurenko, Anton
core  

Experimental Evidence of Free Carrier Generation in 2D Hybrid Organic–Inorganic Perovskites

Advanced Optical Materials, Volume 14, Issue 14, 10 April 2026.
ABSTRACT Despite the significant potential of 2D hybrid organic–inorganic perovskites (2DHOIPs) for high‐efficiency optoelectronics application‐comparable to their 3D counterparts, the fundamental carrier photogeneration remains unclear. In contrast to conventional ultrafast optical property characterization, we use ultrafast photocurrent spectroscopy ...
Tuhin Ghosh, Pan Adhikari, Yao Gao, Apparao M. Rao, Dawen Li, Haimei Zheng, Ying Shi, Letian Dou, Jianbo Gao   +8 more
wiley   +1 more source

Absolute Absorption and Dispersion in a Thermal Rb Vapour at High Densities and High Magnetic Fields. [PDF]

, 2013
This thesis presents a comparative study of the measured and calculated absolute absorption and dispersion properties of the Rb D lines through a dense thermal vapour in the absence and presence of an applied magnetic field.
WELLER, LEE
core  

Rydberg atom in gravity

Journal of Physics: Conference Series, 2014
The local position invariance of a physical system is examined using a Rydberg atom and the universality of free fall is found to be invalid for a quantum system. A Rydberg atom is analysed in Newtonian gravity and curved space. The energy is found to vary as n2 for very large values of the principal quantum number n. The change in energy is calculated
openaire   +1 more source

Otto Stern—An Involuntary Convert to Quantum Theory

Natural Sciences, Volume 6, Issue 2, April 2026.
Otto Stern (1888–1969) at work in his Hamburg laboratory (circa 1930). ABSTRACT The bulk of experiments and observations that lined the path to quantum mechanics amounted to a backlog of data in need of explanation. A notable exception was the Stern–Gerlach experiment (SGE) designed to test the predictions of the old quantum theory as embodied by the ...
Bretislav Friedrich
wiley   +1 more source