Results 41 to 50 of about 100,070 (278)
A Pseudo Random Pursuit Strategy for Atomic Clocks
IEEE Access, 2023 The atomic clock prediction algorithm is a critical part of the atomic time scale system to ensure its stability and accuracy. Random pursuit strategy (RPS) has been verified on the prediction capability of hydrogen maser and cesium clock in our previous
Qian Xu +4 more
doaj +1 more source
, 2018 We analyze the prospects of employing a distributed global network of precision measurement devices as a dark matter and exotic physics observatory. In particular, we consider the atomic clocks of the Global Positioning System (GPS), consisting of a ...
Blewitt, G. +3 more
core +1 more source
Satellite-borne atomic clock based on diffuse laser-cooled atoms
Frontiers in Physics, 2022 The technique of laser cooling of atoms gives an opportunity to improve the performance of atomic clocks by using laser-cooled atoms. The most successful cold atom clock, called the atomic fountain, is now widely used as the primary frequency standard in
Yan-Ling Meng +7 more
doaj +1 more source
Investigations of laser pumped gas cell atomic frequency standard [PDF]
, 1982 The performance characteristics of a rubidium gas cell atomic frequency standard might be improved by replacing the standard rubidium discharge lamp with a single mode laser diode. Aspects of the laser pumped gas cell atomic clock studied include effects
Camparo, J. C. +2 more
core +1 more source
Extracting dark matter signatures from atomic clock stability measurements
, 2017 We analyze possible effects of the dark matter environment on the atomic clock stability measurements. The dark matter is assumed to exist in a form of waves of ultralight scalar fields or in a form of topological defects (monopoles and strings).
Kalaydzhyan, Tigran, Yu, Nan
core +1 more source
Atomic Properties of Lu$^+$ [PDF]
, 2016 Singly ionised Lutetium has recently been suggested as a potential clock candidate. Here we report a joint experimental and theoretical investigation of \ce{Lu^+}.
Arnold, K. J. +7 more
core +3 more sources
Entanglement-enhanced optical atomic clocks
Applied Physics Letters, 2022 Recent developments in atomic physics have enabled the experimental generation of many-body entangled states to boost the performance of quantum sensors beyond the Standard Quantum Limit (SQL). This limit is imposed by the inherent projection noise of a quantum measurement. In this Perspective article, we describe the commonly used experimental methods
Simone Colombo +2 more
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez +13 more
wiley +1 more source
Research on Self-Monitoring Method for Anomalies of Satellite Atomic Clock
International Journal of Aerospace Engineering, 2016 Atomic clock is the core component of navigation satellite payload, playing a decisive role in the realization of positioning function. So the monitoring for anomalies of the satellite atomic clock is very important.
Lei Feng, Guotong Li
doaj +1 more source
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source